xref: /petsc/src/sys/objects/pinit.c (revision ca0c957dd390e0254b8e0ddfb1485a321c0a7f54)
1 #define PETSC_DESIRE_FEATURE_TEST_MACROS
2 /*
3    This file defines the initialization of PETSc, including PetscInitialize()
4 */
5 #include <petsc/private/petscimpl.h>        /*I  "petscsys.h"   I*/
6 #include <petscvalgrind.h>
7 #include <petscviewer.h>
8 #if defined(PETSC_USE_GCOV)
9 EXTERN_C_BEGIN
10 void  __gcov_flush(void);
11 EXTERN_C_END
12 #endif
13 
14 #if defined(PETSC_USE_LOG)
15 PETSC_INTERN PetscErrorCode PetscLogFinalize(void);
16 #endif
17 
18 #if defined(PETSC_SERIALIZE_FUNCTIONS)
19 PETSC_INTERN PetscFPT PetscFPTData;
20 PetscFPT PetscFPTData = 0;
21 #endif
22 
23 #if defined(PETSC_HAVE_SAWS)
24 #include <petscviewersaws.h>
25 #endif
26 
27 /* -----------------------------------------------------------------------------------------*/
28 
29 PETSC_INTERN FILE *petsc_history;
30 
31 PETSC_INTERN PetscErrorCode PetscInitialize_DynamicLibraries(void);
32 PETSC_INTERN PetscErrorCode PetscFinalize_DynamicLibraries(void);
33 PETSC_INTERN PetscErrorCode PetscFunctionListPrintAll(void);
34 PETSC_INTERN PetscErrorCode PetscSequentialPhaseBegin_Private(MPI_Comm,int);
35 PETSC_INTERN PetscErrorCode PetscSequentialPhaseEnd_Private(MPI_Comm,int);
36 PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE**);
37 
38 /* user may set this BEFORE calling PetscInitialize() */
39 MPI_Comm PETSC_COMM_WORLD = MPI_COMM_NULL;
40 
41 PetscMPIInt Petsc_Counter_keyval   = MPI_KEYVAL_INVALID;
42 PetscMPIInt Petsc_InnerComm_keyval = MPI_KEYVAL_INVALID;
43 PetscMPIInt Petsc_OuterComm_keyval = MPI_KEYVAL_INVALID;
44 PetscMPIInt Petsc_ShmComm_keyval   = MPI_KEYVAL_INVALID;
45 
46 /*
47      Declare and set all the string names of the PETSc enums
48 */
49 const char *const PetscBools[]     = {"FALSE","TRUE","PetscBool","PETSC_",NULL};
50 const char *const PetscCopyModes[] = {"COPY_VALUES","OWN_POINTER","USE_POINTER","PetscCopyMode","PETSC_",NULL};
51 
52 PetscBool PetscPreLoadingUsed = PETSC_FALSE;
53 PetscBool PetscPreLoadingOn   = PETSC_FALSE;
54 
55 PetscInt PetscHotRegionDepth;
56 
57 #if defined(PETSC_HAVE_THREADSAFETY)
58 PetscSpinlock PetscViewerASCIISpinLockOpen;
59 PetscSpinlock PetscViewerASCIISpinLockStdout;
60 PetscSpinlock PetscViewerASCIISpinLockStderr;
61 PetscSpinlock PetscCommSpinLock;
62 #endif
63 
64 /*
65       PetscInitializeNoPointers - Calls PetscInitialize() from C/C++ without the pointers to argc and args
66 
67    Collective
68 
69    Level: advanced
70 
71     Notes:
72     this is called only by the PETSc Julia interface. Even though it might start MPI it sets the flag to
73      indicate that it did NOT start MPI so that the PetscFinalize() does not end MPI, thus allowing PetscInitialize() to
74      be called multiple times from Julia without the problem of trying to initialize MPI more than once.
75 
76      Developer Note: Turns off PETSc signal handling to allow Julia to manage signals
77 
78 .seealso: PetscInitialize(), PetscInitializeFortran(), PetscInitializeNoArguments()
79 */
80 PetscErrorCode  PetscInitializeNoPointers(int argc,char **args,const char *filename,const char *help)
81 {
82   PetscErrorCode ierr;
83   int            myargc   = argc;
84   char           **myargs = args;
85 
86   PetscFunctionBegin;
87   ierr = PetscInitialize(&myargc,&myargs,filename,help);if (ierr) return ierr;
88   ierr = PetscPopSignalHandler();CHKERRQ(ierr);
89   PetscBeganMPI = PETSC_FALSE;
90   PetscFunctionReturn(ierr);
91 }
92 
93 /*
94       Used by Julia interface to get communicator
95 */
96 PetscErrorCode  PetscGetPETSC_COMM_SELF(MPI_Comm *comm)
97 {
98   PetscFunctionBegin;
99   *comm = PETSC_COMM_SELF;
100   PetscFunctionReturn(0);
101 }
102 
103 /*@C
104       PetscInitializeNoArguments - Calls PetscInitialize() from C/C++ without
105         the command line arguments.
106 
107    Collective
108 
109    Level: advanced
110 
111 .seealso: PetscInitialize(), PetscInitializeFortran()
112 @*/
113 PetscErrorCode  PetscInitializeNoArguments(void)
114 {
115   PetscErrorCode ierr;
116   int            argc   = 0;
117   char           **args = NULL;
118 
119   PetscFunctionBegin;
120   ierr = PetscInitialize(&argc,&args,NULL,NULL);
121   PetscFunctionReturn(ierr);
122 }
123 
124 /*@
125       PetscInitialized - Determine whether PETSc is initialized.
126 
127    Level: beginner
128 
129 .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
130 @*/
131 PetscErrorCode PetscInitialized(PetscBool *isInitialized)
132 {
133   *isInitialized = PetscInitializeCalled;
134   return 0;
135 }
136 
137 /*@
138       PetscFinalized - Determine whether PetscFinalize() has been called yet
139 
140    Level: developer
141 
142 .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
143 @*/
144 PetscErrorCode  PetscFinalized(PetscBool  *isFinalized)
145 {
146   *isFinalized = PetscFinalizeCalled;
147   return 0;
148 }
149 
150 PETSC_INTERN PetscErrorCode PetscOptionsCheckInitial_Private(void);
151 
152 /*
153        This function is the MPI reduction operation used to compute the sum of the
154    first half of the datatype and the max of the second half.
155 */
156 MPI_Op MPIU_MAXSUM_OP = 0;
157 
158 PETSC_INTERN void MPIAPI MPIU_MaxSum_Local(void *in,void *out,int *cnt,MPI_Datatype *datatype)
159 {
160   PetscInt *xin = (PetscInt*)in,*xout = (PetscInt*)out,i,count = *cnt;
161 
162   PetscFunctionBegin;
163   if (*datatype != MPIU_2INT) {
164     (*PetscErrorPrintf)("Can only handle MPIU_2INT data types");
165     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
166   }
167 
168   for (i=0; i<count; i++) {
169     xout[2*i]    = PetscMax(xout[2*i],xin[2*i]);
170     xout[2*i+1] += xin[2*i+1];
171   }
172   PetscFunctionReturnVoid();
173 }
174 
175 /*
176     Returns the max of the first entry owned by this processor and the
177 sum of the second entry.
178 
179     The reason sizes[2*i] contains lengths sizes[2*i+1] contains flag of 1 if length is nonzero
180 is so that the MPIU_MAXSUM_OP() can set TWO values, if we passed in only sizes[i] with lengths
181 there would be no place to store the both needed results.
182 */
183 PetscErrorCode  PetscMaxSum(MPI_Comm comm,const PetscInt sizes[],PetscInt *max,PetscInt *sum)
184 {
185   PetscErrorCode ierr;
186 
187   PetscFunctionBegin;
188 #if defined(PETSC_HAVE_MPI_REDUCE_SCATTER_BLOCK)
189   {
190     struct {PetscInt max,sum;} work;
191     ierr = MPI_Reduce_scatter_block((void*)sizes,&work,1,MPIU_2INT,MPIU_MAXSUM_OP,comm);CHKERRQ(ierr);
192     *max = work.max;
193     *sum = work.sum;
194   }
195 #else
196   {
197     PetscMPIInt    size,rank;
198     struct {PetscInt max,sum;} *work;
199     ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr);
200     ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr);
201     ierr = PetscMalloc1(size,&work);CHKERRQ(ierr);
202     ierr = MPIU_Allreduce((void*)sizes,work,size,MPIU_2INT,MPIU_MAXSUM_OP,comm);CHKERRQ(ierr);
203     *max = work[rank].max;
204     *sum = work[rank].sum;
205     ierr = PetscFree(work);CHKERRQ(ierr);
206   }
207 #endif
208   PetscFunctionReturn(0);
209 }
210 
211 /* ----------------------------------------------------------------------------*/
212 
213 #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
214 MPI_Op MPIU_SUM = 0;
215 
216 PETSC_EXTERN void PetscSum_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
217 {
218   PetscInt i,count = *cnt;
219 
220   PetscFunctionBegin;
221   if (*datatype == MPIU_REAL) {
222     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
223     for (i=0; i<count; i++) xout[i] += xin[i];
224   }
225 #if defined(PETSC_HAVE_COMPLEX)
226   else if (*datatype == MPIU_COMPLEX) {
227     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
228     for (i=0; i<count; i++) xout[i] += xin[i];
229   }
230 #endif
231   else {
232     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
233     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
234   }
235   PetscFunctionReturnVoid();
236 }
237 #endif
238 
239 #if defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
240 MPI_Op MPIU_MAX = 0;
241 MPI_Op MPIU_MIN = 0;
242 
243 PETSC_EXTERN void PetscMax_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
244 {
245   PetscInt i,count = *cnt;
246 
247   PetscFunctionBegin;
248   if (*datatype == MPIU_REAL) {
249     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
250     for (i=0; i<count; i++) xout[i] = PetscMax(xout[i],xin[i]);
251   }
252 #if defined(PETSC_HAVE_COMPLEX)
253   else if (*datatype == MPIU_COMPLEX) {
254     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
255     for (i=0; i<count; i++) {
256       xout[i] = PetscRealPartComplex(xout[i])<PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
257     }
258   }
259 #endif
260   else {
261     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
262     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
263   }
264   PetscFunctionReturnVoid();
265 }
266 
267 PETSC_EXTERN void PetscMin_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
268 {
269   PetscInt    i,count = *cnt;
270 
271   PetscFunctionBegin;
272   if (*datatype == MPIU_REAL) {
273     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
274     for (i=0; i<count; i++) xout[i] = PetscMin(xout[i],xin[i]);
275   }
276 #if defined(PETSC_HAVE_COMPLEX)
277   else if (*datatype == MPIU_COMPLEX) {
278     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
279     for (i=0; i<count; i++) {
280       xout[i] = PetscRealPartComplex(xout[i])>PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
281     }
282   }
283 #endif
284   else {
285     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_SCALAR data (i.e. double or complex) types");
286     PETSCABORT(MPI_COMM_SELF,PETSC_ERR_ARG_WRONG);
287   }
288   PetscFunctionReturnVoid();
289 }
290 #endif
291 
292 /*
293    Private routine to delete internal tag/name counter storage when a communicator is freed.
294 
295    This is called by MPI, not by users. This is called by MPI_Comm_free() when the communicator that has this  data as an attribute is freed.
296 
297    Note: this is declared extern "C" because it is passed to MPI_Comm_create_keyval()
298 
299 */
300 PETSC_EXTERN PetscMPIInt MPIAPI Petsc_Counter_Attr_Delete_Fn(MPI_Comm comm,PetscMPIInt keyval,void *count_val,void *extra_state)
301 {
302   PetscErrorCode   ierr;
303   PetscCommCounter *counter=(PetscCommCounter*)count_val;
304 
305   PetscFunctionBegin;
306   ierr = PetscInfo1(NULL,"Deleting counter data in an MPI_Comm %ld\n",(long)comm);CHKERRMPI(ierr);
307   ierr = PetscFree(counter->iflags);CHKERRMPI(ierr);
308   ierr = PetscFree(counter);CHKERRMPI(ierr);
309   PetscFunctionReturn(MPI_SUCCESS);
310 }
311 
312 /*
313   This is invoked on the outer comm as a result of either PetscCommDestroy() (via MPI_Comm_delete_attr) or when the user
314   calls MPI_Comm_free().
315 
316   This is the only entry point for breaking the links between inner and outer comms.
317 
318   This is called by MPI, not by users. This is called when MPI_Comm_free() is called on the communicator.
319 
320   Note: this is declared extern "C" because it is passed to MPI_Comm_create_keyval()
321 
322 */
323 PETSC_EXTERN PetscMPIInt MPIAPI Petsc_InnerComm_Attr_Delete_Fn(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
324 {
325   PetscErrorCode                    ierr;
326   union {MPI_Comm comm; void *ptr;} icomm;
327 
328   PetscFunctionBegin;
329   if (keyval != Petsc_InnerComm_keyval) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Unexpected keyval");
330   icomm.ptr = attr_val;
331 #if defined(PETSC_USE_DEBUG)
332   {
333     /* Error out if the inner/outer comms are not correctly linked through their Outer/InnterComm attributes */
334     PetscMPIInt flg;
335     union {MPI_Comm comm; void *ptr;} ocomm;
336     ierr = MPI_Comm_get_attr(icomm.comm,Petsc_OuterComm_keyval,&ocomm,&flg);CHKERRMPI(ierr);
337     if (!flg) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner comm does not have OuterComm attribute");
338     if (ocomm.comm != comm) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner comm's OuterComm attribute does not point to outer PETSc comm");
339   }
340 #endif
341   ierr = MPI_Comm_delete_attr(icomm.comm,Petsc_OuterComm_keyval);CHKERRMPI(ierr);
342   ierr = PetscInfo2(NULL,"User MPI_Comm %ld is being unlinked from inner PETSc comm %ld\n",(long)comm,(long)icomm.comm);CHKERRMPI(ierr);
343   PetscFunctionReturn(MPI_SUCCESS);
344 }
345 
346 /*
347  * This is invoked on the inner comm when Petsc_InnerComm_Attr_Delete_Fn calls MPI_Comm_delete_attr().  It should not be reached any other way.
348  */
349 PETSC_EXTERN PetscMPIInt MPIAPI Petsc_OuterComm_Attr_Delete_Fn(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
350 {
351   PetscErrorCode ierr;
352 
353   PetscFunctionBegin;
354   ierr = PetscInfo1(NULL,"Removing reference to PETSc communicator embedded in a user MPI_Comm %ld\n",(long)comm);CHKERRMPI(ierr);
355   PetscFunctionReturn(MPI_SUCCESS);
356 }
357 
358 PETSC_EXTERN PetscMPIInt MPIAPI Petsc_ShmComm_Attr_Delete_Fn(MPI_Comm,PetscMPIInt,void *,void *);
359 
360 #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
361 PETSC_EXTERN PetscMPIInt PetscDataRep_extent_fn(MPI_Datatype,MPI_Aint*,void*);
362 PETSC_EXTERN PetscMPIInt PetscDataRep_read_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
363 PETSC_EXTERN PetscMPIInt PetscDataRep_write_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
364 #endif
365 
366 PetscMPIInt PETSC_MPI_ERROR_CLASS=MPI_ERR_LASTCODE,PETSC_MPI_ERROR_CODE;
367 
368 PETSC_INTERN int  PetscGlobalArgc;
369 PETSC_INTERN char **PetscGlobalArgs;
370 int  PetscGlobalArgc   = 0;
371 char **PetscGlobalArgs = NULL;
372 PetscSegBuffer PetscCitationsList;
373 
374 PetscErrorCode PetscCitationsInitialize(void)
375 {
376   PetscErrorCode ierr;
377 
378   PetscFunctionBegin;
379   ierr = PetscSegBufferCreate(1,10000,&PetscCitationsList);CHKERRQ(ierr);
380   ierr = PetscCitationsRegister("@TechReport{petsc-user-ref,\n  Author = {Satish Balay and Shrirang Abhyankar and Mark F. Adams and Jed Brown \n            and Peter Brune and Kris Buschelman and Lisandro Dalcin and\n            Victor Eijkhout and William D. Gropp and Dmitry Karpeyev and\n            Dinesh Kaushik and Matthew G. Knepley and Dave A. May and Lois Curfman McInnes\n            and Richard Tran Mills and Todd Munson and Karl Rupp and Patrick Sanan\n            and Barry F. Smith and Stefano Zampini and Hong Zhang and Hong Zhang},\n  Title = {{PETS}c Users Manual},\n  Number = {ANL-95/11 - Revision 3.11},\n  Institution = {Argonne National Laboratory},\n  Year = {2019}\n}\n",NULL);CHKERRQ(ierr);
381   ierr = PetscCitationsRegister("@InProceedings{petsc-efficient,\n  Author = {Satish Balay and William D. Gropp and Lois Curfman McInnes and Barry F. Smith},\n  Title = {Efficient Management of Parallelism in Object Oriented Numerical Software Libraries},\n  Booktitle = {Modern Software Tools in Scientific Computing},\n  Editor = {E. Arge and A. M. Bruaset and H. P. Langtangen},\n  Pages = {163--202},\n  Publisher = {Birkh{\\\"{a}}user Press},\n  Year = {1997}\n}\n",NULL);CHKERRQ(ierr);
382   PetscFunctionReturn(0);
383 }
384 
385 static char programname[PETSC_MAX_PATH_LEN] = ""; /* HP includes entire path in name */
386 
387 PetscErrorCode  PetscSetProgramName(const char name[])
388 {
389   PetscErrorCode ierr;
390 
391   PetscFunctionBegin;
392   ierr  = PetscStrncpy(programname,name,PETSC_MAX_PATH_LEN);CHKERRQ(ierr);
393   PetscFunctionReturn(0);
394 }
395 
396 /*@C
397     PetscGetProgramName - Gets the name of the running program.
398 
399     Not Collective
400 
401     Input Parameter:
402 .   len - length of the string name
403 
404     Output Parameter:
405 .   name - the name of the running program
406 
407    Level: advanced
408 
409     Notes:
410     The name of the program is copied into the user-provided character
411     array of length len.  On some machines the program name includes
412     its entire path, so one should generally set len >= PETSC_MAX_PATH_LEN.
413 @*/
414 PetscErrorCode  PetscGetProgramName(char name[],size_t len)
415 {
416   PetscErrorCode ierr;
417 
418   PetscFunctionBegin;
419    ierr = PetscStrncpy(name,programname,len);CHKERRQ(ierr);
420   PetscFunctionReturn(0);
421 }
422 
423 /*@C
424    PetscGetArgs - Allows you to access the raw command line arguments anywhere
425      after PetscInitialize() is called but before PetscFinalize().
426 
427    Not Collective
428 
429    Output Parameters:
430 +  argc - count of number of command line arguments
431 -  args - the command line arguments
432 
433    Level: intermediate
434 
435    Notes:
436       This is usually used to pass the command line arguments into other libraries
437    that are called internally deep in PETSc or the application.
438 
439       The first argument contains the program name as is normal for C arguments.
440 
441 .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArguments()
442 
443 @*/
444 PetscErrorCode  PetscGetArgs(int *argc,char ***args)
445 {
446   PetscFunctionBegin;
447   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
448   *argc = PetscGlobalArgc;
449   *args = PetscGlobalArgs;
450   PetscFunctionReturn(0);
451 }
452 
453 /*@C
454    PetscGetArguments - Allows you to access the  command line arguments anywhere
455      after PetscInitialize() is called but before PetscFinalize().
456 
457    Not Collective
458 
459    Output Parameters:
460 .  args - the command line arguments
461 
462    Level: intermediate
463 
464    Notes:
465       This does NOT start with the program name and IS null terminated (final arg is void)
466 
467 .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscFreeArguments()
468 
469 @*/
470 PetscErrorCode  PetscGetArguments(char ***args)
471 {
472   PetscInt       i,argc = PetscGlobalArgc;
473   PetscErrorCode ierr;
474 
475   PetscFunctionBegin;
476   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
477   if (!argc) {*args = NULL; PetscFunctionReturn(0);}
478   ierr = PetscMalloc1(argc,args);CHKERRQ(ierr);
479   for (i=0; i<argc-1; i++) {
480     ierr = PetscStrallocpy(PetscGlobalArgs[i+1],&(*args)[i]);CHKERRQ(ierr);
481   }
482   (*args)[argc-1] = NULL;
483   PetscFunctionReturn(0);
484 }
485 
486 /*@C
487    PetscFreeArguments - Frees the memory obtained with PetscGetArguments()
488 
489    Not Collective
490 
491    Output Parameters:
492 .  args - the command line arguments
493 
494    Level: intermediate
495 
496 .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscGetArguments()
497 
498 @*/
499 PetscErrorCode  PetscFreeArguments(char **args)
500 {
501   PetscInt       i = 0;
502   PetscErrorCode ierr;
503 
504   PetscFunctionBegin;
505   if (!args) PetscFunctionReturn(0);
506   while (args[i]) {
507     ierr = PetscFree(args[i]);CHKERRQ(ierr);
508     i++;
509   }
510   ierr = PetscFree(args);CHKERRQ(ierr);
511   PetscFunctionReturn(0);
512 }
513 
514 #if defined(PETSC_HAVE_SAWS)
515 #include <petscconfiginfo.h>
516 
517 PETSC_INTERN PetscErrorCode PetscInitializeSAWs(const char help[])
518 {
519   if (!PetscGlobalRank) {
520     char           cert[PETSC_MAX_PATH_LEN],root[PETSC_MAX_PATH_LEN],*intro,programname[64],*appline,*options,version[64];
521     int            port;
522     PetscBool      flg,rootlocal = PETSC_FALSE,flg2,selectport = PETSC_FALSE;
523     size_t         applinelen,introlen;
524     PetscErrorCode ierr;
525     char           sawsurl[256];
526 
527     ierr = PetscOptionsHasName(NULL,NULL,"-saws_log",&flg);CHKERRQ(ierr);
528     if (flg) {
529       char  sawslog[PETSC_MAX_PATH_LEN];
530 
531       ierr = PetscOptionsGetString(NULL,NULL,"-saws_log",sawslog,PETSC_MAX_PATH_LEN,NULL);CHKERRQ(ierr);
532       if (sawslog[0]) {
533         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(sawslog));
534       } else {
535         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(NULL));
536       }
537     }
538     ierr = PetscOptionsGetString(NULL,NULL,"-saws_https",cert,PETSC_MAX_PATH_LEN,&flg);CHKERRQ(ierr);
539     if (flg) {
540       PetscStackCallSAWs(SAWs_Set_Use_HTTPS,(cert));
541     }
542     ierr = PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select",&selectport,NULL);CHKERRQ(ierr);
543     if (selectport) {
544         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
545         PetscStackCallSAWs(SAWs_Set_Port,(port));
546     } else {
547       ierr = PetscOptionsGetInt(NULL,NULL,"-saws_port",&port,&flg);CHKERRQ(ierr);
548       if (flg) {
549         PetscStackCallSAWs(SAWs_Set_Port,(port));
550       }
551     }
552     ierr = PetscOptionsGetString(NULL,NULL,"-saws_root",root,PETSC_MAX_PATH_LEN,&flg);CHKERRQ(ierr);
553     if (flg) {
554       PetscStackCallSAWs(SAWs_Set_Document_Root,(root));CHKERRQ(ierr);
555       ierr = PetscStrcmp(root,".",&rootlocal);CHKERRQ(ierr);
556     } else {
557       ierr = PetscOptionsHasName(NULL,NULL,"-saws_options",&flg);CHKERRQ(ierr);
558       if (flg) {
559         ierr = PetscStrreplace(PETSC_COMM_WORLD,"${PETSC_DIR}/share/petsc/saws",root,PETSC_MAX_PATH_LEN);CHKERRQ(ierr);
560         PetscStackCallSAWs(SAWs_Set_Document_Root,(root));CHKERRQ(ierr);
561       }
562     }
563     ierr = PetscOptionsHasName(NULL,NULL,"-saws_local",&flg2);CHKERRQ(ierr);
564     if (flg2) {
565       char jsdir[PETSC_MAX_PATH_LEN];
566       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"-saws_local option requires -saws_root option");
567       ierr = PetscSNPrintf(jsdir,PETSC_MAX_PATH_LEN,"%s/js",root);CHKERRQ(ierr);
568       ierr = PetscTestDirectory(jsdir,'r',&flg);CHKERRQ(ierr);
569       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_READ,"-saws_local option requires js directory in root directory");
570       PetscStackCallSAWs(SAWs_Push_Local_Header,());CHKERRQ(ierr);
571     }
572     ierr = PetscGetProgramName(programname,64);CHKERRQ(ierr);
573     ierr = PetscStrlen(help,&applinelen);CHKERRQ(ierr);
574     introlen   = 4096 + applinelen;
575     applinelen += 1024;
576     ierr = PetscMalloc(applinelen,&appline);CHKERRQ(ierr);
577     ierr = PetscMalloc(introlen,&intro);CHKERRQ(ierr);
578 
579     if (rootlocal) {
580       ierr = PetscSNPrintf(appline,applinelen,"%s.c.html",programname);CHKERRQ(ierr);
581       ierr = PetscTestFile(appline,'r',&rootlocal);CHKERRQ(ierr);
582     }
583     ierr = PetscOptionsGetAll(NULL,&options);CHKERRQ(ierr);
584     if (rootlocal && help) {
585       ierr = PetscSNPrintf(appline,applinelen,"<center> Running <a href=\"%s.c.html\">%s</a> %s</center><br><center><pre>%s</pre></center><br>\n",programname,programname,options,help);CHKERRQ(ierr);
586     } else if (help) {
587       ierr = PetscSNPrintf(appline,applinelen,"<center>Running %s %s</center><br><center><pre>%s</pre></center><br>",programname,options,help);CHKERRQ(ierr);
588     } else {
589       ierr = PetscSNPrintf(appline,applinelen,"<center> Running %s %s</center><br>\n",programname,options);CHKERRQ(ierr);
590     }
591     ierr = PetscFree(options);CHKERRQ(ierr);
592     ierr = PetscGetVersion(version,sizeof(version));CHKERRQ(ierr);
593     ierr = PetscSNPrintf(intro,introlen,"<body>\n"
594                                     "<center><h2> <a href=\"https://www.mcs.anl.gov/petsc\">PETSc</a> Application Web server powered by <a href=\"https://bitbucket.org/saws/saws\">SAWs</a> </h2></center>\n"
595                                     "<center>This is the default PETSc application dashboard, from it you can access any published PETSc objects or logging data</center><br><center>%s configured with %s</center><br>\n"
596                                     "%s",version,petscconfigureoptions,appline);CHKERRQ(ierr);
597     PetscStackCallSAWs(SAWs_Push_Body,("index.html",0,intro));
598     ierr = PetscFree(intro);CHKERRQ(ierr);
599     ierr = PetscFree(appline);CHKERRQ(ierr);
600     if (selectport) {
601       PetscBool silent;
602 
603       ierr = SAWs_Initialize();
604       /* another process may have grabbed the port so keep trying */
605       while (ierr) {
606         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
607         PetscStackCallSAWs(SAWs_Set_Port,(port));
608         ierr = SAWs_Initialize();
609       }
610 
611       ierr = PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select_silent",&silent,NULL);CHKERRQ(ierr);
612       if (!silent) {
613         PetscStackCallSAWs(SAWs_Get_FullURL,(sizeof(sawsurl),sawsurl));
614         ierr = PetscPrintf(PETSC_COMM_WORLD,"Point your browser to %s for SAWs\n",sawsurl);CHKERRQ(ierr);
615       }
616     } else {
617       PetscStackCallSAWs(SAWs_Initialize,());
618     }
619     ierr = PetscCitationsRegister("@TechReport{ saws,\n"
620                                   "  Author = {Matt Otten and Jed Brown and Barry Smith},\n"
621                                   "  Title  = {Scientific Application Web Server (SAWs) Users Manual},\n"
622                                   "  Institution = {Argonne National Laboratory},\n"
623                                   "  Year   = 2013\n}\n",NULL);CHKERRQ(ierr);
624   }
625   PetscFunctionReturn(0);
626 }
627 #endif
628 
629 /* Things must be done before MPI_Init() when MPI is not yet initialized, and can be shared between C init and Fortran init */
630 PETSC_INTERN PetscErrorCode PetscPreMPIInit_Private(void)
631 {
632   PetscFunctionBegin;
633 #if defined(PETSC_HAVE_HWLOC_SOLARIS_BUG)
634     /* see MPI.py for details on this bug */
635     (void) setenv("HWLOC_COMPONENTS","-x86",1);
636 #endif
637   PetscFunctionReturn(0);
638 }
639 
640 #if defined(PETSC_HAVE_ADIOS)
641 #include <adios.h>
642 #include <adios_read.h>
643 int64_t Petsc_adios_group;
644 #endif
645 #if defined(PETSC_HAVE_ADIOS2)
646 #include <adios2_c.h>
647 #endif
648 #if defined(PETSC_HAVE_OPENMP)
649 #include <omp.h>
650 PetscInt PetscNumOMPThreads;
651 #endif
652 
653 #if defined(PETSC_HAVE_DLFCN_H)
654 #include <dlfcn.h>
655 #endif
656 
657 /*@C
658    PetscInitialize - Initializes the PETSc database and MPI.
659    PetscInitialize() calls MPI_Init() if that has yet to be called,
660    so this routine should always be called near the beginning of
661    your program -- usually the very first line!
662 
663    Collective on MPI_COMM_WORLD or PETSC_COMM_WORLD if it has been set
664 
665    Input Parameters:
666 +  argc - count of number of command line arguments
667 .  args - the command line arguments
668 .  file - [optional] PETSc database file, also checks ~username/.petscrc and .petscrc use NULL to not check for
669           code specific file. Use -skip_petscrc in the code specific file to skip the .petscrc files
670 -  help - [optional] Help message to print, use NULL for no message
671 
672    If you wish PETSc code to run ONLY on a subcommunicator of MPI_COMM_WORLD, create that
673    communicator first and assign it to PETSC_COMM_WORLD BEFORE calling PetscInitialize(). Thus if you are running a
674    four process job and two processes will run PETSc and have PetscInitialize() and PetscFinalize() and two process will not,
675    then do this. If ALL processes in the job are using PetscInitialize() and PetscFinalize() then you don't need to do this, even
676    if different subcommunicators of the job are doing different things with PETSc.
677 
678    Options Database Keys:
679 +  -help [intro] - prints help method for each option; if intro is given the program stops after printing the introductory help message
680 .  -start_in_debugger [noxterm,dbx,xdb,gdb,...] - Starts program in debugger
681 .  -on_error_attach_debugger [noxterm,dbx,xdb,gdb,...] - Starts debugger when error detected
682 .  -on_error_emacs <machinename> - causes emacsclient to jump to error file
683 .  -on_error_abort - calls abort() when error detected (no traceback)
684 .  -on_error_mpiabort - calls MPI_abort() when error detected
685 .  -error_output_stderr - prints error messages to stderr instead of the default stdout
686 .  -error_output_none - does not print the error messages (but handles errors in the same way as if this was not called)
687 .  -debugger_nodes [node1,node2,...] - Indicates nodes to start in debugger
688 .  -debugger_pause [sleeptime] (in seconds) - Pauses debugger
689 .  -stop_for_debugger - Print message on how to attach debugger manually to
690                         process and wait (-debugger_pause) seconds for attachment
691 .  -malloc - Indicates use of PETSc error-checking malloc (on by default for debug version of libraries) (deprecated, use -malloc_debug)
692 .  -malloc no - Indicates not to use error-checking malloc (deprecated, use -malloc_debug no)
693 .  -malloc_debug - check for memory corruption at EVERY malloc or free, see PetscMallocSetDebug()
694 .  -malloc_dump - prints a list of all unfreed memory at the end of the run
695 .  -malloc_test - like -malloc_dump -malloc_debug, but only active for debugging builds, ignored in optimized build. May want to set in PETSC_OPTIONS environmental variable
696 .  -malloc_view - show a list of all allocated memory during PetscFinalize()
697 .  -malloc_view_threshold <t> - only list memory allocations of size greater than t with -malloc_view
698 .  -fp_trap - Stops on floating point exceptions
699 .  -no_signal_handler - Indicates not to trap error signals
700 .  -shared_tmp - indicates /tmp directory is shared by all processors
701 .  -not_shared_tmp - each processor has own /tmp
702 .  -tmp - alternative name of /tmp directory
703 .  -get_total_flops - returns total flops done by all processors
704 -  -memory_view - Print memory usage at end of run
705 
706    Options Database Keys for Profiling:
707    See Users-Manual: ch_profiling for details.
708 +  -info [filename][:[~]<list,of,classnames>[:[~]self]] - Prints verbose information. See PetscInfo().
709 .  -log_sync - Enable barrier synchronization for all events. This option is useful to debug imbalance within each event,
710         however it slows things down and gives a distorted view of the overall runtime.
711 .  -log_trace [filename] - Print traces of all PETSc calls to the screen (useful to determine where a program
712         hangs without running in the debugger).  See PetscLogTraceBegin().
713 .  -log_view [:filename:format] - Prints summary of flop and timing information to screen or file, see PetscLogView().
714 .  -log_view_memory - Includes in the summary from -log_view the memory used in each method, see PetscLogView().
715 .  -log_summary [filename] - (Deprecated, use -log_view) Prints summary of flop and timing information to screen. If the filename is specified the
716         summary is written to the file.  See PetscLogView().
717 .  -log_exclude: <vec,mat,pc,ksp,snes> - excludes subset of object classes from logging
718 .  -log_all [filename] - Logs extensive profiling information  See PetscLogDump().
719 .  -log [filename] - Logs basic profiline information  See PetscLogDump().
720 .  -log_mpe [filename] - Creates a logfile viewable by the utility Jumpshot (in MPICH distribution)
721 .  -viewfromoptions on,off - Enable or disable XXXSetFromOptions() calls, for applications with many small solves turn this off
722 -  -check_pointer_intensity 0,1,2 - if pointers are checked for validity (debug version only), using 0 will result in faster code
723 
724     Only one of -log_trace, -log_view, -log_view, -log_all, -log, or -log_mpe may be used at a time
725 
726    Options Database Keys for SAWs:
727 +  -saws_port <portnumber> - port number to publish SAWs data, default is 8080
728 .  -saws_port_auto_select - have SAWs select a new unique port number where it publishes the data, the URL is printed to the screen
729                             this is useful when you are running many jobs that utilize SAWs at the same time
730 .  -saws_log <filename> - save a log of all SAWs communication
731 .  -saws_https <certificate file> - have SAWs use HTTPS instead of HTTP
732 -  -saws_root <directory> - allow SAWs to have access to the given directory to search for requested resources and files
733 
734    Environmental Variables:
735 +   PETSC_TMP - alternative tmp directory
736 .   PETSC_SHARED_TMP - tmp is shared by all processes
737 .   PETSC_NOT_SHARED_TMP - each process has its own private tmp
738 .   PETSC_VIEWER_SOCKET_PORT - socket number to use for socket viewer
739 -   PETSC_VIEWER_SOCKET_MACHINE - machine to use for socket viewer to connect to
740 
741 
742    Level: beginner
743 
744    Notes:
745    If for some reason you must call MPI_Init() separately, call
746    it before PetscInitialize().
747 
748    Fortran Version:
749    In Fortran this routine has the format
750 $       call PetscInitialize(file,ierr)
751 
752 +   ierr - error return code
753 -  file - [optional] PETSc database file, also checks ~username/.petscrc and .petscrc use PETSC_NULL_CHARACTER to not check for
754           code specific file. Use -skip_petscrc in the code specific file to skip the .petscrc files
755 
756    Important Fortran Note:
757    In Fortran, you MUST use PETSC_NULL_CHARACTER to indicate a
758    null character string; you CANNOT just use NULL as
759    in the C version. See Users-Manual: ch_fortran for details.
760 
761    If your main program is C but you call Fortran code that also uses PETSc you need to call PetscInitializeFortran() soon after
762    calling PetscInitialize().
763 
764 .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscInitializeNoArguments()
765 
766 @*/
767 PetscErrorCode  PetscInitialize(int *argc,char ***args,const char file[],const char help[])
768 {
769   PetscErrorCode ierr;
770   PetscMPIInt    flag, size;
771   PetscBool      flg = PETSC_TRUE;
772   char           hostname[256];
773 
774   PetscFunctionBegin;
775   if (PetscInitializeCalled) PetscFunctionReturn(0);
776   /*
777       The checking over compatible runtime libraries is complicated by the MPI ABI initiative
778       https://wiki.mpich.org/mpich/index.php/ABI_Compatibility_Initiative which started with
779         MPICH v3.1 (Released Feburary 2014)
780         IBM MPI v2.1 (December 2014)
781         Intel® MPI Library v5.0 (2014)
782         Cray MPT v7.0.0 (June 2014)
783       As of July 31, 2017 the ABI number still appears to be 12, that is all of the versions
784       listed above and since that time are compatible.
785 
786       Unfortunately the MPI ABI initiative has not defined a way to determine the ABI number
787       at compile time or runtime. Thus we will need to systematically track the allowed versions
788       and how they are represented in the mpi.h and MPI_Get_library_version() output in order
789       to perform the checking.
790 
791       Currently we only check for pre MPI ABI versions (and packages that do not follow the MPI ABI).
792 
793       Questions:
794 
795         Should the checks for ABI incompatibility be only on the major version number below?
796         Presumably the output to stderr will be removed before a release.
797   */
798 
799 #if defined(PETSC_HAVE_MPI_GET_LIBRARY_VERSION)
800   {
801     char        mpilibraryversion[MPI_MAX_LIBRARY_VERSION_STRING];
802     PetscMPIInt mpilibraryversionlength;
803     ierr = MPI_Get_library_version(mpilibraryversion,&mpilibraryversionlength);if (ierr) return ierr;
804     /* check for MPICH versions before MPI ABI initiative */
805 #if defined(MPICH_VERSION)
806 #if MPICH_NUMVERSION < 30100000
807     {
808       char *ver,*lf;
809       flg = PETSC_FALSE;
810       ierr = PetscStrstr(mpilibraryversion,"MPICH Version:",&ver);if (ierr) return ierr;
811       if (ver) {
812         ierr = PetscStrchr(ver,'\n',&lf);if (ierr) return ierr;
813         if (lf) {
814           *lf = 0;
815           ierr = PetscStrendswith(ver,MPICH_VERSION,&flg);if (ierr) return ierr;
816         }
817       }
818       if (!flg) {
819         fprintf(stderr,"PETSc Error --- MPICH library version \n%s does not match what PETSc was compiled with %s, aborting\n",mpilibraryversion,MPICH_VERSION);
820         return PETSC_ERR_MPI_LIB_INCOMP;
821       }
822     }
823 #endif
824     /* check for OpenMPI version, it is not part of the MPI ABI initiative (is it part of another initiative that needs to be handled?) */
825 #elif defined(OMPI_MAJOR_VERSION)
826     {
827       char *ver,bs[32],*bsf;
828       flg = PETSC_FALSE;
829       ierr = PetscStrstr(mpilibraryversion,"Open MPI",&ver);if (ierr) return ierr;
830       if (ver) {
831         PetscSNPrintf(bs,32,"v%d.%d",OMPI_MAJOR_VERSION,OMPI_MINOR_VERSION);
832         ierr = PetscStrstr(ver,bs,&bsf);if (ierr) return ierr;
833         if (bsf) flg = PETSC_TRUE;
834       }
835       if (!flg) {
836         fprintf(stderr,"PETSc Error --- Open MPI library version \n%s does not match what PETSc was compiled with %d.%d, aborting\n",mpilibraryversion,OMPI_MAJOR_VERSION,OMPI_MINOR_VERSION);
837         return PETSC_ERR_MPI_LIB_INCOMP;
838       }
839     }
840 #endif
841   }
842 #endif
843 
844 #if defined(PETSC_HAVE_DLSYM)
845   {
846     PetscInt cnt = 0;
847     /* These symbols are currently in the OpenMPI and MPICH libraries; they may not always be, in that case the test will simply not detect the problem */
848     if (dlsym(RTLD_DEFAULT,"ompi_mpi_init")) cnt++;
849     if (dlsym(RTLD_DEFAULT,"MPL_exit")) cnt++;
850     if (cnt > 1) {
851       fprintf(stderr,"PETSc Error --- Application was linked against both OpenMPI and MPICH based MPI libraries and will not run correctly\n");
852       return PETSC_ERR_MPI_LIB_INCOMP;
853     }
854   }
855 #endif
856 
857   /* these must be initialized in a routine, not as a constant declaration*/
858   PETSC_STDOUT = stdout;
859   PETSC_STDERR = stderr;
860 
861   /* on Windows - set printf to default to printing 2 digit exponents */
862 #if defined(PETSC_HAVE__SET_OUTPUT_FORMAT)
863   _set_output_format(_TWO_DIGIT_EXPONENT);
864 #endif
865 
866   ierr = PetscOptionsCreateDefault();CHKERRQ(ierr);
867 
868   /*
869      We initialize the program name here (before MPI_Init()) because MPICH has a bug in
870      it that it sets args[0] on all processors to be args[0] on the first processor.
871   */
872   if (argc && *argc) {
873     ierr = PetscSetProgramName(**args);CHKERRQ(ierr);
874   } else {
875     ierr = PetscSetProgramName("Unknown Name");CHKERRQ(ierr);
876   }
877 
878   ierr = MPI_Initialized(&flag);CHKERRQ(ierr);
879   if (!flag) {
880     if (PETSC_COMM_WORLD != MPI_COMM_NULL) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"You cannot set PETSC_COMM_WORLD if you have not initialized MPI first");
881     ierr = PetscPreMPIInit_Private();CHKERRQ(ierr);
882 #if defined(PETSC_HAVE_MPI_INIT_THREAD)
883     {
884       PetscMPIInt provided;
885       ierr = MPI_Init_thread(argc,args,MPI_THREAD_FUNNELED,&provided);CHKERRQ(ierr);
886     }
887 #else
888     ierr = MPI_Init(argc,args);CHKERRQ(ierr);
889 #endif
890     PetscBeganMPI = PETSC_TRUE;
891   }
892 
893   if (argc && args) {
894     PetscGlobalArgc = *argc;
895     PetscGlobalArgs = *args;
896   }
897   PetscFinalizeCalled = PETSC_FALSE;
898   ierr = PetscSpinlockCreate(&PetscViewerASCIISpinLockOpen);CHKERRQ(ierr);
899   ierr = PetscSpinlockCreate(&PetscViewerASCIISpinLockStdout);CHKERRQ(ierr);
900   ierr = PetscSpinlockCreate(&PetscViewerASCIISpinLockStderr);CHKERRQ(ierr);
901   ierr = PetscSpinlockCreate(&PetscCommSpinLock);CHKERRQ(ierr);
902 
903   if (PETSC_COMM_WORLD == MPI_COMM_NULL) PETSC_COMM_WORLD = MPI_COMM_WORLD;
904   ierr = MPI_Comm_set_errhandler(PETSC_COMM_WORLD,MPI_ERRORS_RETURN);CHKERRQ(ierr);
905 
906   if (PETSC_MPI_ERROR_CLASS == MPI_ERR_LASTCODE) {
907     ierr = MPI_Add_error_class(&PETSC_MPI_ERROR_CLASS);CHKERRQ(ierr);
908     ierr = MPI_Add_error_code(PETSC_MPI_ERROR_CLASS,&PETSC_MPI_ERROR_CODE);CHKERRQ(ierr);
909   }
910 
911   /* Done after init due to a bug in MPICH-GM? */
912   ierr = PetscErrorPrintfInitialize();CHKERRQ(ierr);
913 
914   ierr = MPI_Comm_rank(MPI_COMM_WORLD,&PetscGlobalRank);CHKERRQ(ierr);
915   ierr = MPI_Comm_size(MPI_COMM_WORLD,&PetscGlobalSize);CHKERRQ(ierr);
916 
917   MPIU_BOOL = MPI_INT;
918   MPIU_ENUM = MPI_INT;
919   MPIU_FORTRANADDR = (sizeof(void*) == sizeof(int)) ? MPI_INT : MPIU_INT64;
920   if (sizeof(size_t) == sizeof(unsigned)) MPIU_SIZE_T = MPI_UNSIGNED;
921   else if (sizeof(size_t) == sizeof(unsigned long)) MPIU_SIZE_T = MPI_UNSIGNED_LONG;
922 #if defined(PETSC_SIZEOF_LONG_LONG)
923   else if (sizeof(size_t) == sizeof(unsigned long long)) MPIU_SIZE_T = MPI_UNSIGNED_LONG_LONG;
924 #endif
925   else {(*PetscErrorPrintf)("PetscInitialize: Could not find MPI type for size_t\n"); return PETSC_ERR_SUP_SYS;}
926 
927   /*
928      Initialized the global complex variable; this is because with
929      shared libraries the constructors for global variables
930      are not called; at least on IRIX.
931   */
932 #if defined(PETSC_HAVE_COMPLEX)
933   {
934 #if defined(PETSC_CLANGUAGE_CXX) && !defined(PETSC_USE_REAL___FLOAT128)
935     PetscComplex ic(0.0,1.0);
936     PETSC_i = ic;
937 #else
938     PETSC_i = _Complex_I;
939 #endif
940   }
941 
942 #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
943   ierr = MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU_C_DOUBLE_COMPLEX);CHKERRQ(ierr);
944   ierr = MPI_Type_commit(&MPIU_C_DOUBLE_COMPLEX);CHKERRQ(ierr);
945   ierr = MPI_Type_contiguous(2,MPI_FLOAT,&MPIU_C_COMPLEX);CHKERRQ(ierr);
946   ierr = MPI_Type_commit(&MPIU_C_COMPLEX);CHKERRQ(ierr);
947 #endif
948 #endif /* PETSC_HAVE_COMPLEX */
949 
950   /*
951      Create the PETSc MPI reduction operator that sums of the first
952      half of the entries and maxes the second half.
953   */
954   ierr = MPI_Op_create(MPIU_MaxSum_Local,1,&MPIU_MAXSUM_OP);CHKERRQ(ierr);
955 
956 #if defined(PETSC_USE_REAL___FLOAT128)
957   ierr = MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU___FLOAT128);CHKERRQ(ierr);
958   ierr = MPI_Type_commit(&MPIU___FLOAT128);CHKERRQ(ierr);
959 #if defined(PETSC_HAVE_COMPLEX)
960   ierr = MPI_Type_contiguous(4,MPI_DOUBLE,&MPIU___COMPLEX128);CHKERRQ(ierr);
961   ierr = MPI_Type_commit(&MPIU___COMPLEX128);CHKERRQ(ierr);
962 #endif
963   ierr = MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);CHKERRQ(ierr);
964   ierr = MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);CHKERRQ(ierr);
965 #elif defined(PETSC_USE_REAL___FP16)
966   ierr = MPI_Type_contiguous(2,MPI_CHAR,&MPIU___FP16);CHKERRQ(ierr);
967   ierr = MPI_Type_commit(&MPIU___FP16);CHKERRQ(ierr);
968   ierr = MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);CHKERRQ(ierr);
969   ierr = MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);CHKERRQ(ierr);
970 #endif
971 
972 #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
973   ierr = MPI_Op_create(PetscSum_Local,1,&MPIU_SUM);CHKERRQ(ierr);
974 #endif
975 
976   ierr = MPI_Type_contiguous(2,MPIU_SCALAR,&MPIU_2SCALAR);CHKERRQ(ierr);
977   ierr = MPI_Type_commit(&MPIU_2SCALAR);CHKERRQ(ierr);
978 
979 #if defined(PETSC_USE_64BIT_INDICES)
980   ierr = MPI_Type_contiguous(2,MPIU_INT,&MPIU_2INT);CHKERRQ(ierr);
981   ierr = MPI_Type_commit(&MPIU_2INT);CHKERRQ(ierr);
982 #endif
983 
984 
985   /*
986      Attributes to be set on PETSc communicators
987   */
988   ierr = MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_Counter_Attr_Delete_Fn,&Petsc_Counter_keyval,(void*)0);CHKERRQ(ierr);
989   ierr = MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_InnerComm_Attr_Delete_Fn,&Petsc_InnerComm_keyval,(void*)0);CHKERRQ(ierr);
990   ierr = MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_OuterComm_Attr_Delete_Fn,&Petsc_OuterComm_keyval,(void*)0);CHKERRQ(ierr);
991   ierr = MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_ShmComm_Attr_Delete_Fn,&Petsc_ShmComm_keyval,(void*)0);CHKERRQ(ierr);
992 
993   /*
994      Build the options database
995   */
996   ierr = PetscOptionsInsert(NULL,argc,args,file);CHKERRQ(ierr);
997 
998   /* call a second time so it can look in the options database */
999   ierr = PetscErrorPrintfInitialize();CHKERRQ(ierr);
1000 
1001   /*
1002      Print main application help message
1003   */
1004   ierr = PetscOptionsHasHelp(NULL,&flg);CHKERRQ(ierr);
1005   if (help && flg) {
1006     ierr = PetscPrintf(PETSC_COMM_WORLD,help);CHKERRQ(ierr);
1007     ierr = PetscPrintf(PETSC_COMM_WORLD,"----------------------------------------\n");CHKERRQ(ierr);
1008   }
1009   ierr = PetscOptionsCheckInitial_Private();CHKERRQ(ierr);
1010 
1011   ierr = PetscCitationsInitialize();CHKERRQ(ierr);
1012 
1013 #if defined(PETSC_HAVE_SAWS)
1014   ierr = PetscInitializeSAWs(help);CHKERRQ(ierr);
1015 #endif
1016 
1017   /*
1018      Load the dynamic libraries (on machines that support them), this registers all
1019      the solvers etc. (On non-dynamic machines this initializes the PetscDraw and PetscViewer classes)
1020   */
1021   ierr = PetscInitialize_DynamicLibraries();CHKERRQ(ierr);
1022 
1023   ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr);
1024   ierr = PetscInfo1(NULL,"PETSc successfully started: number of processors = %d\n",size);CHKERRQ(ierr);
1025   ierr = PetscGetHostName(hostname,256);CHKERRQ(ierr);
1026   ierr = PetscInfo1(NULL,"Running on machine: %s\n",hostname);CHKERRQ(ierr);
1027 #if defined(PETSC_HAVE_OPENMP)
1028   {
1029     PetscBool omp_view_flag;
1030     char      *threads = getenv("OMP_NUM_THREADS");
1031 
1032    if (threads) {
1033      ierr = PetscInfo1(NULL,"Number of OpenMP threads %s (given by OMP_NUM_THREADS)\n",threads);CHKERRQ(ierr);
1034      (void) sscanf(threads, "%" PetscInt_FMT,&PetscNumOMPThreads);
1035    } else {
1036 #define NMAX  10000
1037      int          i;
1038       PetscScalar *x;
1039       ierr = PetscMalloc1(NMAX,&x);CHKERRQ(ierr);
1040 #pragma omp parallel for
1041       for (i=0; i<NMAX; i++) {
1042         x[i] = 0.0;
1043         PetscNumOMPThreads  = (PetscInt) omp_get_num_threads();
1044       }
1045       ierr = PetscFree(x);CHKERRQ(ierr);
1046       ierr = PetscInfo1(NULL,"Number of OpenMP threads %D (number not set with OMP_NUM_THREADS, chosen by system)\n",PetscNumOMPThreads);CHKERRQ(ierr);
1047     }
1048     ierr = PetscOptionsBegin(PETSC_COMM_WORLD,NULL,"OpenMP options","Sys");CHKERRQ(ierr);
1049     ierr = PetscOptionsInt("-omp_num_threads","Number of OpenMP threads to use (can also use environmental variable OMP_NUM_THREADS","None",PetscNumOMPThreads,&PetscNumOMPThreads,&flg);CHKERRQ(ierr);
1050     ierr = PetscOptionsName("-omp_view","Display OpenMP number of threads",NULL,&omp_view_flag);CHKERRQ(ierr);
1051     ierr = PetscOptionsEnd();CHKERRQ(ierr);
1052     if (flg) {
1053       ierr = PetscInfo1(NULL,"Number of OpenMP theads %D (given by -omp_num_threads)\n",PetscNumOMPThreads);CHKERRQ(ierr);
1054       omp_set_num_threads((int)PetscNumOMPThreads);
1055     }
1056     if (omp_view_flag) {
1057       ierr = PetscPrintf(PETSC_COMM_WORLD,"OpenMP: number of threads %D\n",PetscNumOMPThreads);CHKERRQ(ierr);
1058     }
1059   }
1060 #endif
1061   /* Check the options database for options related to the options database itself */
1062   ierr = PetscOptionsSetFromOptions(NULL);CHKERRQ(ierr);
1063 
1064 #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
1065   /*
1066       Tell MPI about our own data representation converter, this would/should be used if extern32 is not supported by the MPI
1067 
1068       Currently not used because it is not supported by MPICH.
1069   */
1070   if (!PetscBinaryBigEndian()) {
1071     ierr = MPI_Register_datarep((char*)"petsc",PetscDataRep_read_conv_fn,PetscDataRep_write_conv_fn,PetscDataRep_extent_fn,NULL);CHKERRQ(ierr);
1072   }
1073 #endif
1074 
1075   /*
1076       Setup building of stack frames for all function calls
1077   */
1078 #if defined(PETSC_USE_DEBUG) && !defined(PETSC_HAVE_THREADSAFETY)
1079   ierr = PetscStackCreate();CHKERRQ(ierr);
1080 #endif
1081 
1082 #if defined(PETSC_SERIALIZE_FUNCTIONS)
1083   ierr = PetscFPTCreate(10000);CHKERRQ(ierr);
1084 #endif
1085 
1086 #if defined(PETSC_HAVE_HWLOC)
1087   {
1088     PetscViewer viewer;
1089     ierr = PetscOptionsGetViewer(PETSC_COMM_WORLD,NULL,NULL,"-process_view",&viewer,NULL,&flg);CHKERRQ(ierr);
1090     if (flg) {
1091       ierr = PetscProcessPlacementView(viewer);CHKERRQ(ierr);
1092       ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
1093     }
1094   }
1095 #endif
1096 
1097   flg = PETSC_TRUE;
1098   ierr = PetscOptionsGetBool(NULL,NULL,"-viewfromoptions",&flg,NULL);CHKERRQ(ierr);
1099   if (!flg) {ierr = PetscOptionsPushGetViewerOff(PETSC_TRUE); CHKERRQ(ierr);}
1100 
1101 #if defined(PETSC_HAVE_ADIOS)
1102   ierr = adios_init_noxml(PETSC_COMM_WORLD);CHKERRQ(ierr);
1103   ierr = adios_declare_group(&Petsc_adios_group,"PETSc","",adios_stat_default);CHKERRQ(ierr);
1104   ierr = adios_select_method(Petsc_adios_group,"MPI","","");CHKERRQ(ierr);
1105   ierr = adios_read_init_method(ADIOS_READ_METHOD_BP,PETSC_COMM_WORLD,"");CHKERRQ(ierr);
1106 #endif
1107 #if defined(PETSC_HAVE_ADIOS2)
1108 #endif
1109 
1110   /*
1111       Once we are completedly initialized then we can set this variables
1112   */
1113   PetscInitializeCalled = PETSC_TRUE;
1114 
1115   ierr = PetscOptionsHasName(NULL,NULL,"-python",&flg);CHKERRQ(ierr);
1116   if (flg) {ierr = PetscPythonInitialize(NULL,NULL);CHKERRQ(ierr);}
1117   PetscFunctionReturn(0);
1118 }
1119 
1120 #if defined(PETSC_USE_LOG)
1121 PETSC_INTERN PetscObject *PetscObjects;
1122 PETSC_INTERN PetscInt    PetscObjectsCounts;
1123 PETSC_INTERN PetscInt    PetscObjectsMaxCounts;
1124 PETSC_INTERN PetscBool   PetscObjectsLog;
1125 #endif
1126 
1127 /*
1128     Frees all the MPI types and operations that PETSc may have created
1129 */
1130 PetscErrorCode  PetscFreeMPIResources(void)
1131 {
1132   PetscErrorCode ierr;
1133 
1134   PetscFunctionBegin;
1135 #if defined(PETSC_USE_REAL___FLOAT128)
1136   ierr = MPI_Type_free(&MPIU___FLOAT128);CHKERRQ(ierr);
1137 #if defined(PETSC_HAVE_COMPLEX)
1138   ierr = MPI_Type_free(&MPIU___COMPLEX128);CHKERRQ(ierr);
1139 #endif
1140   ierr = MPI_Op_free(&MPIU_MAX);CHKERRQ(ierr);
1141   ierr = MPI_Op_free(&MPIU_MIN);CHKERRQ(ierr);
1142 #elif defined(PETSC_USE_REAL___FP16)
1143   ierr = MPI_Type_free(&MPIU___FP16);CHKERRQ(ierr);
1144   ierr = MPI_Op_free(&MPIU_MAX);CHKERRQ(ierr);
1145   ierr = MPI_Op_free(&MPIU_MIN);CHKERRQ(ierr);
1146 #endif
1147 
1148 #if defined(PETSC_HAVE_COMPLEX)
1149 #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
1150   ierr = MPI_Type_free(&MPIU_C_DOUBLE_COMPLEX);CHKERRQ(ierr);
1151   ierr = MPI_Type_free(&MPIU_C_COMPLEX);CHKERRQ(ierr);
1152 #endif
1153 #endif
1154 
1155 #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
1156   ierr = MPI_Op_free(&MPIU_SUM);CHKERRQ(ierr);
1157 #endif
1158 
1159   ierr = MPI_Type_free(&MPIU_2SCALAR);CHKERRQ(ierr);
1160 #if defined(PETSC_USE_64BIT_INDICES)
1161   ierr = MPI_Type_free(&MPIU_2INT);CHKERRQ(ierr);
1162 #endif
1163   ierr = MPI_Op_free(&MPIU_MAXSUM_OP);CHKERRQ(ierr);
1164   PetscFunctionReturn(0);
1165 }
1166 
1167 /*@C
1168    PetscFinalize - Checks for options to be called at the conclusion
1169    of the program. MPI_Finalize() is called only if the user had not
1170    called MPI_Init() before calling PetscInitialize().
1171 
1172    Collective on PETSC_COMM_WORLD
1173 
1174    Options Database Keys:
1175 +  -options_view - Calls PetscOptionsView()
1176 .  -options_left - Prints unused options that remain in the database
1177 .  -objects_dump [all] - Prints list of objects allocated by the user that have not been freed, the option all cause all outstanding objects to be listed
1178 .  -mpidump - Calls PetscMPIDump()
1179 .  -malloc_dump <optional filename> - Calls PetscMallocDump(), displays all memory allocated that has not been freed
1180 .  -malloc_info - Prints total memory usage
1181 -  -malloc_view <optional filename> - Prints list of all memory allocated and where
1182 
1183    Level: beginner
1184 
1185    Note:
1186    See PetscInitialize() for more general runtime options.
1187 
1188 .seealso: PetscInitialize(), PetscOptionsView(), PetscMallocDump(), PetscMPIDump(), PetscEnd()
1189 @*/
1190 PetscErrorCode  PetscFinalize(void)
1191 {
1192   PetscErrorCode ierr;
1193   PetscMPIInt    rank;
1194   PetscInt       nopt;
1195   PetscBool      flg1 = PETSC_FALSE,flg2 = PETSC_FALSE,flg3 = PETSC_FALSE;
1196   PetscBool      flg;
1197 #if defined(PETSC_USE_LOG)
1198   char           mname[PETSC_MAX_PATH_LEN];
1199 #endif
1200 
1201   if (!PetscInitializeCalled) {
1202     printf("PetscInitialize() must be called before PetscFinalize()\n");
1203     return(PETSC_ERR_ARG_WRONGSTATE);
1204   }
1205   PetscFunctionBegin;
1206   ierr = PetscInfo(NULL,"PetscFinalize() called\n");CHKERRQ(ierr);
1207 
1208   ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr);
1209 #if defined(PETSC_HAVE_ADIOS)
1210   ierr = adios_read_finalize_method(ADIOS_READ_METHOD_BP_AGGREGATE);CHKERRQ(ierr);
1211   ierr = adios_finalize(rank);CHKERRQ(ierr);
1212 #endif
1213 #if defined(PETSC_HAVE_ADIOS2)
1214 #endif
1215   ierr = PetscOptionsHasName(NULL,NULL,"-citations",&flg);CHKERRQ(ierr);
1216   if (flg) {
1217     char  *cits, filename[PETSC_MAX_PATH_LEN];
1218     FILE  *fd = PETSC_STDOUT;
1219 
1220     ierr = PetscOptionsGetString(NULL,NULL,"-citations",filename,PETSC_MAX_PATH_LEN,NULL);CHKERRQ(ierr);
1221     if (filename[0]) {
1222       ierr = PetscFOpen(PETSC_COMM_WORLD,filename,"w",&fd);CHKERRQ(ierr);
1223     }
1224     ierr = PetscSegBufferGet(PetscCitationsList,1,&cits);CHKERRQ(ierr);
1225     cits[0] = 0;
1226     ierr = PetscSegBufferExtractAlloc(PetscCitationsList,&cits);CHKERRQ(ierr);
1227     ierr = PetscFPrintf(PETSC_COMM_WORLD,fd,"If you publish results based on this computation please cite the following:\n");CHKERRQ(ierr);
1228     ierr = PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");CHKERRQ(ierr);
1229     ierr = PetscFPrintf(PETSC_COMM_WORLD,fd,"%s",cits);CHKERRQ(ierr);
1230     ierr = PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");CHKERRQ(ierr);
1231     ierr = PetscFClose(PETSC_COMM_WORLD,fd);CHKERRQ(ierr);
1232     ierr = PetscFree(cits);CHKERRQ(ierr);
1233   }
1234   ierr = PetscSegBufferDestroy(&PetscCitationsList);CHKERRQ(ierr);
1235 
1236 #if defined(PETSC_HAVE_SSL) && defined(PETSC_USE_SOCKET_VIEWER)
1237   /* TextBelt is run for testing purposes only, please do not use this feature often */
1238   {
1239     PetscInt nmax = 2;
1240     char     **buffs;
1241     ierr = PetscMalloc1(2,&buffs);CHKERRQ(ierr);
1242     ierr = PetscOptionsGetStringArray(NULL,NULL,"-textbelt",buffs,&nmax,&flg1);CHKERRQ(ierr);
1243     if (flg1) {
1244       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-textbelt requires either the phone number or number,\"message\"");
1245       if (nmax == 1) {
1246         ierr = PetscMalloc1(128,&buffs[1]);CHKERRQ(ierr);
1247         ierr = PetscGetProgramName(buffs[1],32);CHKERRQ(ierr);
1248         ierr = PetscStrcat(buffs[1]," has completed");CHKERRQ(ierr);
1249       }
1250       ierr = PetscTextBelt(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);CHKERRQ(ierr);
1251       ierr = PetscFree(buffs[0]);CHKERRQ(ierr);
1252       ierr = PetscFree(buffs[1]);CHKERRQ(ierr);
1253     }
1254     ierr = PetscFree(buffs);CHKERRQ(ierr);
1255   }
1256   {
1257     PetscInt nmax = 2;
1258     char     **buffs;
1259     ierr = PetscMalloc1(2,&buffs);CHKERRQ(ierr);
1260     ierr = PetscOptionsGetStringArray(NULL,NULL,"-tellmycell",buffs,&nmax,&flg1);CHKERRQ(ierr);
1261     if (flg1) {
1262       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-tellmycell requires either the phone number or number,\"message\"");
1263       if (nmax == 1) {
1264         ierr = PetscMalloc1(128,&buffs[1]);CHKERRQ(ierr);
1265         ierr = PetscGetProgramName(buffs[1],32);CHKERRQ(ierr);
1266         ierr = PetscStrcat(buffs[1]," has completed");CHKERRQ(ierr);
1267       }
1268       ierr = PetscTellMyCell(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);CHKERRQ(ierr);
1269       ierr = PetscFree(buffs[0]);CHKERRQ(ierr);
1270       ierr = PetscFree(buffs[1]);CHKERRQ(ierr);
1271     }
1272     ierr = PetscFree(buffs);CHKERRQ(ierr);
1273   }
1274 #endif
1275   /*
1276     It should be safe to cancel the options monitors, since we don't expect to be setting options
1277     here (at least that are worth monitoring).  Monitors ought to be released so that they release
1278     whatever memory was allocated there before -malloc_dump reports unfreed memory.
1279   */
1280   ierr = PetscOptionsMonitorCancel();CHKERRQ(ierr);
1281 
1282 #if defined(PETSC_SERIALIZE_FUNCTIONS)
1283   ierr = PetscFPTDestroy();CHKERRQ(ierr);
1284 #endif
1285 
1286 
1287 #if defined(PETSC_HAVE_SAWS)
1288   flg = PETSC_FALSE;
1289   ierr = PetscOptionsGetBool(NULL,NULL,"-saw_options",&flg,NULL);CHKERRQ(ierr);
1290   if (flg) {
1291     ierr = PetscOptionsSAWsDestroy();CHKERRQ(ierr);
1292   }
1293 #endif
1294 
1295 #if defined(PETSC_HAVE_X)
1296   flg1 = PETSC_FALSE;
1297   ierr = PetscOptionsGetBool(NULL,NULL,"-x_virtual",&flg1,NULL);CHKERRQ(ierr);
1298   if (flg1) {
1299     /*  this is a crude hack, but better than nothing */
1300     ierr = PetscPOpen(PETSC_COMM_WORLD,NULL,"pkill -9 Xvfb","r",NULL);CHKERRQ(ierr);
1301   }
1302 #endif
1303 
1304 #if !defined(PETSC_HAVE_THREADSAFETY)
1305   ierr = PetscOptionsGetBool(NULL,NULL,"-malloc_info",&flg2,NULL);CHKERRQ(ierr);
1306   if (!flg2) {
1307     flg2 = PETSC_FALSE;
1308     ierr = PetscOptionsGetBool(NULL,NULL,"-memory_view",&flg2,NULL);CHKERRQ(ierr);
1309   }
1310   if (flg2) {
1311     ierr = PetscMemoryView(PETSC_VIEWER_STDOUT_WORLD,"Summary of Memory Usage in PETSc\n");CHKERRQ(ierr);
1312   }
1313 #endif
1314 
1315 #if defined(PETSC_USE_LOG)
1316   flg1 = PETSC_FALSE;
1317   ierr = PetscOptionsGetBool(NULL,NULL,"-get_total_flops",&flg1,NULL);CHKERRQ(ierr);
1318   if (flg1) {
1319     PetscLogDouble flops = 0;
1320     ierr = MPI_Reduce(&petsc_TotalFlops,&flops,1,MPI_DOUBLE,MPI_SUM,0,PETSC_COMM_WORLD);CHKERRQ(ierr);
1321     ierr = PetscPrintf(PETSC_COMM_WORLD,"Total flops over all processors %g\n",flops);CHKERRQ(ierr);
1322   }
1323 #endif
1324 
1325 
1326 #if defined(PETSC_USE_LOG)
1327 #if defined(PETSC_HAVE_MPE)
1328   mname[0] = 0;
1329   ierr = PetscOptionsGetString(NULL,NULL,"-log_mpe",mname,PETSC_MAX_PATH_LEN,&flg1);CHKERRQ(ierr);
1330   if (flg1) {
1331     if (mname[0]) {ierr = PetscLogMPEDump(mname);CHKERRQ(ierr);}
1332     else          {ierr = PetscLogMPEDump(0);CHKERRQ(ierr);}
1333   }
1334 #endif
1335 #endif
1336 
1337   /*
1338      Free all objects registered with PetscObjectRegisterDestroy() such as PETSC_VIEWER_XXX_().
1339   */
1340   ierr = PetscObjectRegisterDestroyAll();CHKERRQ(ierr);
1341 
1342 #if defined(PETSC_USE_LOG)
1343   ierr = PetscOptionsPushGetViewerOff(PETSC_FALSE);CHKERRQ(ierr);
1344   ierr = PetscLogViewFromOptions();CHKERRQ(ierr);
1345   ierr = PetscOptionsPopGetViewerOff();CHKERRQ(ierr);
1346 
1347   mname[0] = 0;
1348   ierr = PetscOptionsGetString(NULL,NULL,"-log_summary",mname,PETSC_MAX_PATH_LEN,&flg1);CHKERRQ(ierr);
1349   if (flg1) {
1350     PetscViewer viewer;
1351     ierr = (*PetscHelpPrintf)(PETSC_COMM_WORLD,"\n\n WARNING:   -log_summary is being deprecated; switch to -log_view\n\n\n");CHKERRQ(ierr);
1352     if (mname[0]) {
1353       ierr = PetscViewerASCIIOpen(PETSC_COMM_WORLD,mname,&viewer);CHKERRQ(ierr);
1354       ierr = PetscLogView(viewer);CHKERRQ(ierr);
1355       ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
1356     } else {
1357       viewer = PETSC_VIEWER_STDOUT_WORLD;
1358       ierr   = PetscViewerPushFormat(viewer,PETSC_VIEWER_DEFAULT);CHKERRQ(ierr);
1359       ierr   = PetscLogView(viewer);CHKERRQ(ierr);
1360       ierr   = PetscViewerPopFormat(viewer);CHKERRQ(ierr);
1361     }
1362   }
1363 
1364   /*
1365      Free any objects created by the last block of code.
1366   */
1367   ierr = PetscObjectRegisterDestroyAll();CHKERRQ(ierr);
1368 
1369   mname[0] = 0;
1370   ierr = PetscOptionsGetString(NULL,NULL,"-log_all",mname,PETSC_MAX_PATH_LEN,&flg1);CHKERRQ(ierr);
1371   ierr = PetscOptionsGetString(NULL,NULL,"-log",mname,PETSC_MAX_PATH_LEN,&flg2);CHKERRQ(ierr);
1372   if (flg1 || flg2) {ierr = PetscLogDump(mname);CHKERRQ(ierr);}
1373 #endif
1374 
1375   ierr = PetscStackDestroy();CHKERRQ(ierr);
1376 
1377   flg1 = PETSC_FALSE;
1378   ierr = PetscOptionsGetBool(NULL,NULL,"-no_signal_handler",&flg1,NULL);CHKERRQ(ierr);
1379   if (!flg1) { ierr = PetscPopSignalHandler();CHKERRQ(ierr);}
1380   flg1 = PETSC_FALSE;
1381   ierr = PetscOptionsGetBool(NULL,NULL,"-mpidump",&flg1,NULL);CHKERRQ(ierr);
1382   if (flg1) {
1383     ierr = PetscMPIDump(stdout);CHKERRQ(ierr);
1384   }
1385   flg1 = PETSC_FALSE;
1386   flg2 = PETSC_FALSE;
1387   /* preemptive call to avoid listing this option in options table as unused */
1388   ierr = PetscOptionsHasName(NULL,NULL,"-malloc_dump",&flg1);CHKERRQ(ierr);
1389   ierr = PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);CHKERRQ(ierr);
1390   ierr = PetscOptionsGetBool(NULL,NULL,"-options_view",&flg2,NULL);CHKERRQ(ierr);
1391 
1392   if (flg2) {
1393     PetscViewer viewer;
1394     ierr = PetscViewerCreate(PETSC_COMM_WORLD,&viewer);CHKERRQ(ierr);
1395     ierr = PetscViewerSetType(viewer,PETSCVIEWERASCII);CHKERRQ(ierr);
1396     ierr = PetscOptionsView(NULL,viewer);CHKERRQ(ierr);
1397     ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
1398   }
1399 
1400   /* to prevent PETSc -options_left from warning */
1401   ierr = PetscOptionsHasName(NULL,NULL,"-nox",&flg1);CHKERRQ(ierr);
1402   ierr = PetscOptionsHasName(NULL,NULL,"-nox_warning",&flg1);CHKERRQ(ierr);
1403 
1404   flg3 = PETSC_FALSE; /* default value is required */
1405   ierr = PetscOptionsGetBool(NULL,NULL,"-options_left",&flg3,&flg1);CHKERRQ(ierr);
1406 #if defined(PETSC_USE_DEBUG)
1407   if (!flg1) flg3 = PETSC_TRUE;
1408 #endif
1409   if (flg3) {
1410     if (!flg2 && flg1) { /* have not yet printed the options */
1411       PetscViewer viewer;
1412       ierr = PetscViewerCreate(PETSC_COMM_WORLD,&viewer);CHKERRQ(ierr);
1413       ierr = PetscViewerSetType(viewer,PETSCVIEWERASCII);CHKERRQ(ierr);
1414       ierr = PetscOptionsView(NULL,viewer);CHKERRQ(ierr);
1415       ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
1416     }
1417     ierr = PetscOptionsAllUsed(NULL,&nopt);CHKERRQ(ierr);
1418     if (nopt) {
1419       ierr = PetscPrintf(PETSC_COMM_WORLD,"WARNING! There are options you set that were not used!\n");CHKERRQ(ierr);
1420       ierr = PetscPrintf(PETSC_COMM_WORLD,"WARNING! could be spelling mistake, etc!\n");CHKERRQ(ierr);
1421       if (nopt == 1) {
1422         ierr = PetscPrintf(PETSC_COMM_WORLD,"There is one unused database option. It is:\n");CHKERRQ(ierr);
1423       } else {
1424         ierr = PetscPrintf(PETSC_COMM_WORLD,"There are %D unused database options. They are:\n",nopt);CHKERRQ(ierr);
1425       }
1426     } else if (flg3 && flg1) {
1427       ierr = PetscPrintf(PETSC_COMM_WORLD,"There are no unused options.\n");CHKERRQ(ierr);
1428     }
1429     ierr = PetscOptionsLeft(NULL);CHKERRQ(ierr);
1430   }
1431 
1432 #if defined(PETSC_HAVE_SAWS)
1433   if (!PetscGlobalRank) {
1434     ierr = PetscStackSAWsViewOff();CHKERRQ(ierr);
1435     PetscStackCallSAWs(SAWs_Finalize,());
1436   }
1437 #endif
1438 
1439 #if defined(PETSC_USE_LOG)
1440   /*
1441        List all objects the user may have forgot to free
1442   */
1443   if (PetscObjectsLog) {
1444     ierr = PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);CHKERRQ(ierr);
1445     if (flg1) {
1446       MPI_Comm local_comm;
1447       char     string[64];
1448 
1449       ierr = PetscOptionsGetString(NULL,NULL,"-objects_dump",string,64,NULL);CHKERRQ(ierr);
1450       ierr = MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);CHKERRQ(ierr);
1451       ierr = PetscSequentialPhaseBegin_Private(local_comm,1);CHKERRQ(ierr);
1452       ierr = PetscObjectsDump(stdout,(string[0] == 'a') ? PETSC_TRUE : PETSC_FALSE);CHKERRQ(ierr);
1453       ierr = PetscSequentialPhaseEnd_Private(local_comm,1);CHKERRQ(ierr);
1454       ierr = MPI_Comm_free(&local_comm);CHKERRQ(ierr);
1455     }
1456   }
1457 #endif
1458 
1459 #if defined(PETSC_USE_LOG)
1460   PetscObjectsCounts    = 0;
1461   PetscObjectsMaxCounts = 0;
1462   ierr = PetscFree(PetscObjects);CHKERRQ(ierr);
1463 #endif
1464 
1465   /*
1466      Destroy any packages that registered a finalize
1467   */
1468   ierr = PetscRegisterFinalizeAll();CHKERRQ(ierr);
1469 
1470 #if defined(PETSC_USE_LOG)
1471   ierr = PetscLogFinalize();CHKERRQ(ierr);
1472 #endif
1473 
1474   /*
1475      Print PetscFunctionLists that have not been properly freed
1476 
1477   ierr = PetscFunctionListPrintAll();CHKERRQ(ierr);
1478   */
1479 
1480   if (petsc_history) {
1481     ierr = PetscCloseHistoryFile(&petsc_history);CHKERRQ(ierr);
1482     petsc_history = NULL;
1483   }
1484   ierr = PetscOptionsHelpPrintedDestroy(&PetscOptionsHelpPrintedSingleton);CHKERRQ(ierr);
1485   ierr = PetscInfoDestroy();CHKERRQ(ierr);
1486 
1487 #if !defined(PETSC_HAVE_THREADSAFETY)
1488   if (!(PETSC_RUNNING_ON_VALGRIND)) {
1489     char fname[PETSC_MAX_PATH_LEN];
1490     char sname[PETSC_MAX_PATH_LEN];
1491     FILE *fd;
1492     int  err;
1493 
1494     flg2 = PETSC_FALSE;
1495     flg3 = PETSC_FALSE;
1496 #if defined(PETSC_USE_DEBUG)
1497     ierr = PetscOptionsGetBool(NULL,NULL,"-malloc_test",&flg2,NULL);CHKERRQ(ierr);
1498 #endif
1499     ierr = PetscOptionsGetBool(NULL,NULL,"-malloc_debug",&flg3,NULL);CHKERRQ(ierr);
1500     fname[0] = 0;
1501     ierr = PetscOptionsGetString(NULL,NULL,"-malloc_dump",fname,250,&flg1);CHKERRQ(ierr);
1502     if (flg1 && fname[0]) {
1503 
1504       PetscSNPrintf(sname,PETSC_MAX_PATH_LEN,"%s_%d",fname,rank);
1505       fd   = fopen(sname,"w"); if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",sname);
1506       ierr = PetscMallocDump(fd);CHKERRQ(ierr);
1507       err  = fclose(fd);
1508       if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
1509     } else if (flg1 || flg2 || flg3) {
1510       MPI_Comm local_comm;
1511 
1512       ierr = MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);CHKERRQ(ierr);
1513       ierr = PetscSequentialPhaseBegin_Private(local_comm,1);CHKERRQ(ierr);
1514       ierr = PetscMallocDump(stdout);CHKERRQ(ierr);
1515       ierr = PetscSequentialPhaseEnd_Private(local_comm,1);CHKERRQ(ierr);
1516       ierr = MPI_Comm_free(&local_comm);CHKERRQ(ierr);
1517     }
1518     fname[0] = 0;
1519     ierr = PetscOptionsGetString(NULL,NULL,"-malloc_view",fname,250,&flg1);CHKERRQ(ierr);
1520     if (flg1 && fname[0]) {
1521 
1522       PetscSNPrintf(sname,PETSC_MAX_PATH_LEN,"%s_%d",fname,rank);
1523       fd   = fopen(sname,"w"); if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",sname);
1524       ierr = PetscMallocView(fd);CHKERRQ(ierr);
1525       err  = fclose(fd);
1526       if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
1527     } else if (flg1) {
1528       MPI_Comm local_comm;
1529 
1530       ierr = MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);CHKERRQ(ierr);
1531       ierr = PetscSequentialPhaseBegin_Private(local_comm,1);CHKERRQ(ierr);
1532       ierr = PetscMallocView(stdout);CHKERRQ(ierr);
1533       ierr = PetscSequentialPhaseEnd_Private(local_comm,1);CHKERRQ(ierr);
1534       ierr = MPI_Comm_free(&local_comm);CHKERRQ(ierr);
1535     }
1536   }
1537 #endif
1538 
1539   /*
1540      Close any open dynamic libraries
1541   */
1542   ierr = PetscFinalize_DynamicLibraries();CHKERRQ(ierr);
1543 
1544   /* Can be destroyed only after all the options are used */
1545   ierr = PetscOptionsDestroyDefault();CHKERRQ(ierr);
1546 
1547   PetscGlobalArgc = 0;
1548   PetscGlobalArgs = NULL;
1549 
1550   ierr = PetscFreeMPIResources();CHKERRQ(ierr);
1551 
1552   /*
1553      Destroy any known inner MPI_Comm's and attributes pointing to them
1554      Note this will not destroy any new communicators the user has created.
1555 
1556      If all PETSc objects were not destroyed those left over objects will have hanging references to
1557      the MPI_Comms that were freed; but that is ok because those PETSc objects will never be used again
1558  */
1559   {
1560     PetscCommCounter *counter;
1561     PetscMPIInt      flg;
1562     MPI_Comm         icomm;
1563     union {MPI_Comm comm; void *ptr;} ucomm;
1564     ierr = MPI_Comm_get_attr(PETSC_COMM_SELF,Petsc_InnerComm_keyval,&ucomm,&flg);CHKERRQ(ierr);
1565     if (flg) {
1566       icomm = ucomm.comm;
1567       ierr = MPI_Comm_get_attr(icomm,Petsc_Counter_keyval,&counter,&flg);CHKERRQ(ierr);
1568       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");
1569 
1570       ierr = MPI_Comm_delete_attr(PETSC_COMM_SELF,Petsc_InnerComm_keyval);CHKERRQ(ierr);
1571       ierr = MPI_Comm_delete_attr(icomm,Petsc_Counter_keyval);CHKERRQ(ierr);
1572       ierr = MPI_Comm_free(&icomm);CHKERRQ(ierr);
1573     }
1574     ierr = MPI_Comm_get_attr(PETSC_COMM_WORLD,Petsc_InnerComm_keyval,&ucomm,&flg);CHKERRQ(ierr);
1575     if (flg) {
1576       icomm = ucomm.comm;
1577       ierr = MPI_Comm_get_attr(icomm,Petsc_Counter_keyval,&counter,&flg);CHKERRQ(ierr);
1578       if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");
1579 
1580       ierr = MPI_Comm_delete_attr(PETSC_COMM_WORLD,Petsc_InnerComm_keyval);CHKERRQ(ierr);
1581       ierr = MPI_Comm_delete_attr(icomm,Petsc_Counter_keyval);CHKERRQ(ierr);
1582       ierr = MPI_Comm_free(&icomm);CHKERRQ(ierr);
1583     }
1584   }
1585 
1586   ierr = MPI_Comm_free_keyval(&Petsc_Counter_keyval);CHKERRQ(ierr);
1587   ierr = MPI_Comm_free_keyval(&Petsc_InnerComm_keyval);CHKERRQ(ierr);
1588   ierr = MPI_Comm_free_keyval(&Petsc_OuterComm_keyval);CHKERRQ(ierr);
1589   ierr = MPI_Comm_free_keyval(&Petsc_ShmComm_keyval);CHKERRQ(ierr);
1590 
1591   ierr = PetscSpinlockDestroy(&PetscViewerASCIISpinLockOpen);CHKERRQ(ierr);
1592   ierr = PetscSpinlockDestroy(&PetscViewerASCIISpinLockStdout);CHKERRQ(ierr);
1593   ierr = PetscSpinlockDestroy(&PetscViewerASCIISpinLockStderr);CHKERRQ(ierr);
1594   ierr = PetscSpinlockDestroy(&PetscCommSpinLock);CHKERRQ(ierr);
1595 
1596   if (PetscBeganMPI) {
1597 #if defined(PETSC_HAVE_MPI_FINALIZED)
1598     PetscMPIInt flag;
1599     ierr = MPI_Finalized(&flag);CHKERRQ(ierr);
1600     if (flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"MPI_Finalize() has already been called, even though MPI_Init() was called by PetscInitialize()");
1601 #endif
1602     ierr = MPI_Finalize();CHKERRQ(ierr);
1603   }
1604 /*
1605 
1606      Note: In certain cases PETSC_COMM_WORLD is never MPI_Comm_free()ed because
1607    the communicator has some outstanding requests on it. Specifically if the
1608    flag PETSC_HAVE_BROKEN_REQUEST_FREE is set (for IBM MPI implementation). See
1609    src/vec/utils/vpscat.c. Due to this the memory allocated in PetscCommDuplicate()
1610    is never freed as it should be. Thus one may obtain messages of the form
1611    [ 1] 8 bytes PetscCommDuplicate() line 645 in src/sys/mpiu.c indicating the
1612    memory was not freed.
1613 
1614 */
1615   ierr = PetscMallocClear();CHKERRQ(ierr);
1616 
1617   PetscInitializeCalled = PETSC_FALSE;
1618   PetscFinalizeCalled   = PETSC_TRUE;
1619 #if defined(PETSC_USE_GCOV)
1620   /*
1621      flush gcov, otherwise during CI the flushing continues into the next pipeline resulting in git not being able to delete directories since the
1622      gcov files are still being added to the directories as git tries to remove the directories.
1623    */
1624   __gcov_flush();
1625 #endif
1626   PetscFunctionReturn(0);
1627 }
1628 
1629 #if defined(PETSC_MISSING_LAPACK_lsame_)
1630 PETSC_EXTERN int lsame_(char *a,char *b)
1631 {
1632   if (*a == *b) return 1;
1633   if (*a + 32 == *b) return 1;
1634   if (*a - 32 == *b) return 1;
1635   return 0;
1636 }
1637 #endif
1638 
1639 #if defined(PETSC_MISSING_LAPACK_lsame)
1640 PETSC_EXTERN int lsame(char *a,char *b)
1641 {
1642   if (*a == *b) return 1;
1643   if (*a + 32 == *b) return 1;
1644   if (*a - 32 == *b) return 1;
1645   return 0;
1646 }
1647 #endif
1648