xref: /petsc/src/sys/objects/init.c (revision 11a5261e40035b7c793f2783a2ba6c7cd4f3b077)
1 /*
2 
3    This file defines part of the initialization of PETSc
4 
5   This file uses regular malloc and free because it cannot be known
6   what malloc is being used until it has already processed the input.
7 */
8 #include <petsc/private/petscimpl.h> /*I  "petscsys.h"   I*/
9 
10 #if defined(PETSC_HAVE_SYS_SYSINFO_H)
11 #include <sys/sysinfo.h>
12 #endif
13 #if defined(PETSC_HAVE_UNISTD_H)
14 #include <unistd.h>
15 #endif
16 
17 /* ------------------------Nasty global variables -------------------------------*/
18 /*
19      Indicates if PETSc started up MPI, or it was
20    already started before PETSc was initialized.
21 */
22 PetscBool PetscBeganMPI                 = PETSC_FALSE;
23 PetscBool PetscErrorHandlingInitialized = PETSC_FALSE;
24 PetscBool PetscInitializeCalled         = PETSC_FALSE;
25 PetscBool PetscFinalizeCalled           = PETSC_FALSE;
26 
27 PetscMPIInt PetscGlobalRank = -1;
28 PetscMPIInt PetscGlobalSize = -1;
29 
30 #if defined(PETSC_HAVE_KOKKOS)
31 PetscBool PetscBeganKokkos = PETSC_FALSE;
32 #endif
33 
34 #if defined(PETSC_HAVE_NVSHMEM)
35 PetscBool PetscBeganNvshmem       = PETSC_FALSE;
36 PetscBool PetscNvshmemInitialized = PETSC_FALSE;
37 #endif
38 
39 PetscBool use_gpu_aware_mpi = PetscDefined(HAVE_MPIUNI) ? PETSC_FALSE : PETSC_TRUE;
40 
41 PetscBool PetscPrintFunctionList = PETSC_FALSE;
42 
43 #if defined(PETSC_HAVE_COMPLEX)
44 #if defined(PETSC_COMPLEX_INSTANTIATE)
45 template <>
46 class std::complex<double>; /* instantiate complex template class */
47 #endif
48 
49 /*MC
50    PETSC_i - the imaginary number i
51 
52    Synopsis:
53    #include <petscsys.h>
54    PetscComplex PETSC_i;
55 
56    Level: beginner
57 
58    Note:
59    Complex numbers are automatically available if PETSc located a working complex implementation
60 
61 .seealso: `PetscRealPart()`, `PetscImaginaryPart()`, `PetscRealPartComplex()`, `PetscImaginaryPartComplex()`
62 M*/
63 PetscComplex PETSC_i;
64 MPI_Datatype MPIU___COMPLEX128 = 0;
65 #endif /* PETSC_HAVE_COMPLEX */
66 #if defined(PETSC_HAVE_REAL___FLOAT128)
67 MPI_Datatype MPIU___FLOAT128 = 0;
68 #endif
69 #if defined(PETSC_HAVE_REAL___FP16)
70 MPI_Datatype MPIU___FP16 = 0;
71 #endif
72 MPI_Datatype MPIU_2SCALAR    = 0;
73 MPI_Datatype MPIU_REAL_INT   = 0;
74 MPI_Datatype MPIU_SCALAR_INT = 0;
75 #if defined(PETSC_USE_64BIT_INDICES)
76 MPI_Datatype MPIU_2INT = 0;
77 #endif
78 MPI_Datatype MPI_4INT  = 0;
79 MPI_Datatype MPIU_4INT = 0;
80 MPI_Datatype MPIU_BOOL;
81 MPI_Datatype MPIU_ENUM;
82 MPI_Datatype MPIU_FORTRANADDR;
83 MPI_Datatype MPIU_SIZE_T;
84 
85 /*
86        Function that is called to display all error messages
87 */
88 PetscErrorCode (*PetscErrorPrintf)(const char[], ...)          = PetscErrorPrintfDefault;
89 PetscErrorCode (*PetscHelpPrintf)(MPI_Comm, const char[], ...) = PetscHelpPrintfDefault;
90 PetscErrorCode (*PetscVFPrintf)(FILE *, const char[], va_list) = PetscVFPrintfDefault;
91 
92 /* ------------------------------------------------------------------------------*/
93 /*
94    Optional file where all PETSc output from various prints is saved
95 */
96 PETSC_INTERN FILE *petsc_history;
97 FILE              *petsc_history = NULL;
98 
99 PetscErrorCode PetscOpenHistoryFile(const char filename[], FILE **fd) {
100   PetscMPIInt rank, size;
101   char        pfile[PETSC_MAX_PATH_LEN], pname[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN], date[64];
102   char        version[256];
103 
104   PetscFunctionBegin;
105   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
106   if (rank == 0) {
107     char arch[10];
108     int  err;
109 
110     PetscCall(PetscGetArchType(arch, 10));
111     PetscCall(PetscGetDate(date, 64));
112     PetscCall(PetscGetVersion(version, 256));
113     PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
114     if (filename) {
115       PetscCall(PetscFixFilename(filename, fname));
116     } else {
117       PetscCall(PetscGetHomeDirectory(pfile, sizeof(pfile)));
118       PetscCall(PetscStrlcat(pfile, "/.petschistory", sizeof(pfile)));
119       PetscCall(PetscFixFilename(pfile, fname));
120     }
121 
122     *fd = fopen(fname, "a");
123     PetscCheck(fd, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Cannot open file: %s", fname);
124 
125     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
126     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s %s\n", version, date));
127     PetscCall(PetscGetProgramName(pname, sizeof(pname)));
128     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s on a %s, %d proc. with options:\n", pname, arch, size));
129     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
130 
131     err = fflush(*fd);
132     PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_SYS, "fflush() failed on file");
133   }
134   PetscFunctionReturn(0);
135 }
136 
137 PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE **fd) {
138   PetscMPIInt rank;
139   char        date[64];
140   int         err;
141 
142   PetscFunctionBegin;
143   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
144   if (rank == 0) {
145     PetscCall(PetscGetDate(date, 64));
146     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
147     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "Finished at %s\n", date));
148     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
149     err = fflush(*fd);
150     PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_SYS, "fflush() failed on file");
151     err = fclose(*fd);
152     PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_SYS, "fclose() failed on file");
153   }
154   PetscFunctionReturn(0);
155 }
156 
157 /* ------------------------------------------------------------------------------*/
158 
159 /*
160    This is ugly and probably belongs somewhere else, but I want to
161   be able to put a true MPI abort error handler with command line args.
162 
163     This is so MPI errors in the debugger will leave all the stack
164   frames. The default MP_Abort() cleans up and exits thus providing no useful information
165   in the debugger hence we call abort() instead of MPI_Abort().
166 */
167 
168 void Petsc_MPI_AbortOnError(MPI_Comm *comm, PetscMPIInt *flag, ...) {
169   PetscFunctionBegin;
170   (*PetscErrorPrintf)("MPI error %d\n", *flag);
171   abort();
172 }
173 
174 void Petsc_MPI_DebuggerOnError(MPI_Comm *comm, PetscMPIInt *flag, ...) {
175   PetscFunctionBegin;
176   (*PetscErrorPrintf)("MPI error %d\n", *flag);
177   if (PetscAttachDebugger()) PETSCABORT(*comm, *flag); /* hopeless so get out */
178 }
179 
180 /*@C
181    PetscEnd - Calls `PetscFinalize()` and then ends the program. This is useful if one
182      wishes a clean exit somewhere deep in the program.
183 
184    Collective on `PETSC_COMM_WORLD`
185 
186    Options Database Keys are the same as for `PetscFinalize()`
187 
188    Level: advanced
189 
190    Note:
191    See `PetscInitialize()` for more general runtime options.
192 
193 .seealso: `PetscInitialize()`, `PetscOptionsView()`, `PetscMallocDump()`, `PetscMPIDump()`, `PetscFinalize()`
194 @*/
195 PetscErrorCode PetscEnd(void) {
196   PetscFunctionBegin;
197   PetscFinalize();
198   exit(0);
199   return 0;
200 }
201 
202 PetscBool                   PetscOptionsPublish = PETSC_FALSE;
203 PETSC_INTERN PetscErrorCode PetscSetUseHBWMalloc_Private(void);
204 PETSC_INTERN PetscBool      petscsetmallocvisited;
205 static char                 emacsmachinename[256];
206 
207 PetscErrorCode (*PetscExternalVersionFunction)(MPI_Comm) = NULL;
208 PetscErrorCode (*PetscExternalHelpFunction)(MPI_Comm)    = NULL;
209 
210 #if PetscDefined(USE_LOG)
211 #include <petscviewer.h>
212 #endif
213 
214 /*@C
215    PetscSetHelpVersionFunctions - Sets functions that print help and version information
216    before the PETSc help and version information is printed. Must call BEFORE `PetscInitialize()`.
217    This routine enables a "higher-level" package that uses PETSc to print its messages first.
218 
219    Input Parameters:
220 +  help - the help function (may be NULL)
221 -  version - the version function (may be NULL)
222 
223    Level: developer
224 
225 @*/
226 PetscErrorCode PetscSetHelpVersionFunctions(PetscErrorCode (*help)(MPI_Comm), PetscErrorCode (*version)(MPI_Comm)) {
227   PetscFunctionBegin;
228   PetscExternalHelpFunction    = help;
229   PetscExternalVersionFunction = version;
230   PetscFunctionReturn(0);
231 }
232 
233 #if defined(PETSC_USE_LOG)
234 PETSC_INTERN PetscBool PetscObjectsLog;
235 #endif
236 
237 PETSC_INTERN PetscErrorCode PetscOptionsCheckInitial_Private(const char help[]) {
238   char        string[64];
239   MPI_Comm    comm = PETSC_COMM_WORLD;
240   PetscBool   flg1 = PETSC_FALSE, flg2 = PETSC_FALSE, flg3 = PETSC_FALSE, flag, hasHelp;
241   PetscReal   si;
242   PetscInt    intensity;
243   int         i;
244   PetscMPIInt rank;
245   char        version[256];
246 #if defined(PETSC_USE_LOG)
247   char              mname[PETSC_MAX_PATH_LEN];
248   PetscViewerFormat format;
249   PetscBool         flg4 = PETSC_FALSE;
250 #endif
251 
252   PetscFunctionBegin;
253   PetscCallMPI(MPI_Comm_rank(comm, &rank));
254 
255   if (PetscDefined(USE_DEBUG) && !PetscDefined(HAVE_THREADSAFETY)) PetscCall(PetscStackSetCheck(PETSC_TRUE));
256   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkfunctionlist", &PetscPrintFunctionList, NULL));
257 
258 #if !defined(PETSC_HAVE_THREADSAFETY)
259   if (!(PETSC_RUNNING_ON_VALGRIND)) {
260     /*
261       Setup the memory management; support for tracing malloc() usage
262     */
263     PetscBool mdebug = PETSC_FALSE, eachcall = PETSC_FALSE, initializenan = PETSC_FALSE, mlog = PETSC_FALSE;
264 
265     if (PetscDefined(USE_DEBUG)) {
266       mdebug        = PETSC_TRUE;
267       initializenan = PETSC_TRUE;
268       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
269     } else {
270       /* don't warn about unused option */
271       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
272       flg1 = PETSC_FALSE;
273     }
274     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_debug", &flg2, &flg3));
275     if (flg1 || flg2) {
276       mdebug        = PETSC_TRUE;
277       eachcall      = PETSC_TRUE;
278       initializenan = PETSC_TRUE;
279     } else if (flg3 && !flg2) {
280       mdebug        = PETSC_FALSE;
281       eachcall      = PETSC_FALSE;
282       initializenan = PETSC_FALSE;
283     }
284 
285     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_requested_size", &flg1, &flg2));
286     if (flg2) PetscCall(PetscMallocLogRequestedSizeSet(flg1));
287 
288     PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_view", &mlog));
289     if (mlog) mdebug = PETSC_TRUE;
290     /* the next line is deprecated */
291     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc", &mdebug, NULL));
292     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_dump", &mdebug, NULL));
293     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &mdebug, NULL));
294     if (mdebug) PetscCall(PetscMallocSetDebug(eachcall, initializenan));
295     if (mlog) {
296       PetscReal logthreshold = 0;
297       PetscCall(PetscOptionsGetReal(NULL, NULL, "-malloc_view_threshold", &logthreshold, NULL));
298       PetscCall(PetscMallocViewSet(logthreshold));
299     }
300 #if defined(PETSC_USE_LOG)
301     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &PetscLogMemory, NULL));
302 #endif
303   }
304 
305   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_coalesce", &flg1, &flg2));
306   if (flg2) PetscCall(PetscMallocSetCoalesce(flg1));
307   flg1 = PETSC_FALSE;
308   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_hbw", &flg1, NULL));
309   /* ignore this option if malloc is already set */
310   if (flg1 && !petscsetmallocvisited) PetscCall(PetscSetUseHBWMalloc_Private());
311 
312   flg1 = PETSC_FALSE;
313   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_info", &flg1, NULL));
314   if (!flg1) {
315     flg1 = PETSC_FALSE;
316     PetscCall(PetscOptionsGetBool(NULL, NULL, "-memory_view", &flg1, NULL));
317   }
318   if (flg1) PetscCall(PetscMemorySetGetMaximumUsage());
319 #endif
320 
321 #if defined(PETSC_USE_LOG)
322   PetscCall(PetscOptionsHasName(NULL, NULL, "-objects_dump", &PetscObjectsLog));
323 #endif
324 
325   /*
326       Set the display variable for graphics
327   */
328   PetscCall(PetscSetDisplay());
329 
330   /*
331      Print main application help message
332   */
333   PetscCall(PetscOptionsHasHelp(NULL, &hasHelp));
334   if (help && hasHelp) {
335     PetscCall(PetscPrintf(comm, "%s", help));
336     PetscCall(PetscPrintf(comm, "----------------------------------------\n"));
337   }
338 
339   /*
340       Print the PETSc version information
341   */
342   PetscCall(PetscOptionsHasName(NULL, NULL, "-version", &flg1));
343   if (flg1 || hasHelp) {
344     /*
345        Print "higher-level" package version message
346     */
347     if (PetscExternalVersionFunction) PetscCall((*PetscExternalVersionFunction)(comm));
348 
349     PetscCall(PetscGetVersion(version, 256));
350     PetscCall((*PetscHelpPrintf)(comm, "%s\n", version));
351     PetscCall((*PetscHelpPrintf)(comm, "%s", PETSC_AUTHOR_INFO));
352     PetscCall((*PetscHelpPrintf)(comm, "See docs/changes/index.html for recent updates.\n"));
353     PetscCall((*PetscHelpPrintf)(comm, "See docs/faq.html for problems.\n"));
354     PetscCall((*PetscHelpPrintf)(comm, "See docs/manualpages/index.html for help. \n"));
355     PetscCall((*PetscHelpPrintf)(comm, "Libraries linked from %s\n", PETSC_LIB_DIR));
356     PetscCall((*PetscHelpPrintf)(comm, "----------------------------------------\n"));
357   }
358 
359   /*
360        Print "higher-level" package help message
361   */
362   if (hasHelp) {
363     PetscBool hasHelpIntro;
364 
365     if (PetscExternalHelpFunction) PetscCall((*PetscExternalHelpFunction)(comm));
366     PetscCall(PetscOptionsHasHelpIntro_Internal(NULL, &hasHelpIntro));
367     if (hasHelpIntro) {
368       PetscCall(PetscOptionsDestroyDefault());
369       PetscCall(PetscFreeMPIResources());
370       PetscCallMPI(MPI_Finalize());
371       exit(0);
372     }
373   }
374 
375   /*
376       Setup the error handling
377   */
378   flg1 = PETSC_FALSE;
379   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_abort", &flg1, NULL));
380   if (flg1) {
381     PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_ARE_FATAL));
382     PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
383   }
384   flg1 = PETSC_FALSE;
385   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_mpiabort", &flg1, NULL));
386   if (flg1) PetscCall(PetscPushErrorHandler(PetscMPIAbortErrorHandler, NULL));
387   flg1 = PETSC_FALSE;
388   PetscCall(PetscOptionsGetBool(NULL, NULL, "-mpi_return_on_error", &flg1, NULL));
389   if (flg1) PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_RETURN));
390   flg1 = PETSC_FALSE;
391   PetscCall(PetscOptionsGetBool(NULL, NULL, "-no_signal_handler", &flg1, NULL));
392   if (!flg1) PetscCall(PetscPushSignalHandler(PetscSignalHandlerDefault, (void *)0));
393 
394   /*
395       Setup debugger information
396   */
397   PetscCall(PetscSetDefaultDebugger());
398   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_attach_debugger", string, sizeof(string), &flg1));
399   if (flg1) {
400     MPI_Errhandler err_handler;
401 
402     PetscCall(PetscSetDebuggerFromString(string));
403     PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_DebuggerOnError, &err_handler));
404     PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
405     PetscCall(PetscPushErrorHandler(PetscAttachDebuggerErrorHandler, NULL));
406   }
407   PetscCall(PetscOptionsGetString(NULL, NULL, "-debug_terminal", string, sizeof(string), &flg1));
408   if (flg1) PetscCall(PetscSetDebugTerminal(string));
409   PetscCall(PetscOptionsGetString(NULL, NULL, "-start_in_debugger", string, sizeof(string), &flg1));
410   PetscCall(PetscOptionsGetString(NULL, NULL, "-stop_for_debugger", string, sizeof(string), &flg2));
411   if (flg1 || flg2) {
412     PetscMPIInt    size;
413     PetscInt       lsize, *ranks;
414     MPI_Errhandler err_handler;
415     /*
416        we have to make sure that all processors have opened
417        connections to all other processors, otherwise once the
418        debugger has stated it is likely to receive a SIGUSR1
419        and kill the program.
420     */
421     PetscCallMPI(MPI_Comm_size(comm, &size));
422     if (size > 2) {
423       PetscMPIInt dummy = 0;
424       MPI_Status  status;
425       for (i = 0; i < size; i++) {
426         if (rank != i) PetscCallMPI(MPI_Send(&dummy, 1, MPI_INT, i, 109, comm));
427       }
428       for (i = 0; i < size; i++) {
429         if (rank != i) PetscCallMPI(MPI_Recv(&dummy, 1, MPI_INT, i, 109, comm, &status));
430       }
431     }
432     /* check if this processor node should be in debugger */
433     PetscCall(PetscMalloc1(size, &ranks));
434     lsize = size;
435     /* Deprecated in 3.14 */
436     PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_nodes", ranks, &lsize, &flag));
437     if (flag) {
438       const char *const quietopt = "-options_suppress_deprecated_warnings";
439       char              msg[4096];
440       PetscBool         quiet = PETSC_FALSE;
441 
442       PetscCall(PetscOptionsGetBool(NULL, NULL, quietopt, &quiet, NULL));
443       if (!quiet) {
444         PetscCall(PetscStrcpy(msg, "** PETSc DEPRECATION WARNING ** : the option "));
445         PetscCall(PetscStrcat(msg, "-debugger_nodes"));
446         PetscCall(PetscStrcat(msg, " is deprecated as of version "));
447         PetscCall(PetscStrcat(msg, "3.14"));
448         PetscCall(PetscStrcat(msg, " and will be removed in a future release."));
449         PetscCall(PetscStrcat(msg, " Please use the option "));
450         PetscCall(PetscStrcat(msg, "-debugger_ranks"));
451         PetscCall(PetscStrcat(msg, " instead."));
452         PetscCall(PetscStrcat(msg, " (Silence this warning with "));
453         PetscCall(PetscStrcat(msg, quietopt));
454         PetscCall(PetscStrcat(msg, ")\n"));
455         PetscCall(PetscPrintf(comm, "%s", msg));
456       }
457     } else {
458       lsize = size;
459       PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_ranks", ranks, &lsize, &flag));
460     }
461     if (flag) {
462       for (i = 0; i < lsize; i++) {
463         if (ranks[i] == rank) {
464           flag = PETSC_FALSE;
465           break;
466         }
467       }
468     }
469     if (!flag) {
470       PetscCall(PetscSetDebuggerFromString(string));
471       PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
472       if (flg1) {
473         PetscCall(PetscAttachDebugger());
474       } else {
475         PetscCall(PetscStopForDebugger());
476       }
477       PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_AbortOnError, &err_handler));
478       PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
479     } else {
480       PetscCall(PetscWaitOnError());
481     }
482     PetscCall(PetscFree(ranks));
483   }
484 
485   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_emacs", emacsmachinename, sizeof(emacsmachinename), &flg1));
486   if (flg1 && rank == 0) PetscCall(PetscPushErrorHandler(PetscEmacsClientErrorHandler, emacsmachinename));
487 
488     /*
489         Setup profiling and logging
490   */
491 #if defined(PETSC_USE_INFO)
492   { PetscCall(PetscInfoSetFromOptions(NULL)); }
493 #endif
494   PetscCall(PetscDetermineInitialFPTrap());
495   flg1 = PETSC_FALSE;
496   PetscCall(PetscOptionsGetBool(NULL, NULL, "-fp_trap", &flg1, &flag));
497   if (flag) PetscCall(PetscSetFPTrap(flg1 ? PETSC_FP_TRAP_ON : PETSC_FP_TRAP_OFF));
498   PetscCall(PetscOptionsGetInt(NULL, NULL, "-check_pointer_intensity", &intensity, &flag));
499   if (flag) PetscCall(PetscCheckPointerSetIntensity(intensity));
500 #if defined(PETSC_USE_LOG)
501   mname[0] = 0;
502   PetscCall(PetscOptionsGetString(NULL, NULL, "-history", mname, sizeof(mname), &flg1));
503   if (flg1) {
504     if (mname[0]) {
505       PetscCall(PetscOpenHistoryFile(mname, &petsc_history));
506     } else {
507       PetscCall(PetscOpenHistoryFile(NULL, &petsc_history));
508     }
509   }
510 
511   PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_sync", &PetscLogSyncOn, NULL));
512 
513 #if defined(PETSC_HAVE_MPE)
514   flg1 = PETSC_FALSE;
515   PetscCall(PetscOptionsHasName(NULL, NULL, "-log_mpe", &flg1));
516   if (flg1) PetscCall(PetscLogMPEBegin());
517 #endif
518   flg1 = PETSC_FALSE;
519   flg3 = PETSC_FALSE;
520   PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_all", &flg1, NULL));
521   PetscCall(PetscOptionsHasName(NULL, NULL, "-log_summary", &flg3));
522   if (flg1) PetscCall(PetscLogAllBegin());
523   else if (flg3) PetscCall(PetscLogDefaultBegin());
524 
525   PetscCall(PetscOptionsGetString(NULL, NULL, "-log_trace", mname, sizeof(mname), &flg1));
526   if (flg1) {
527     char  name[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN];
528     FILE *file;
529     if (mname[0]) {
530       PetscSNPrintf(name, PETSC_MAX_PATH_LEN, "%s.%d", mname, rank);
531       PetscCall(PetscFixFilename(name, fname));
532       file = fopen(fname, "w");
533       PetscCheck(file, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to open trace file: %s", fname);
534     } else file = PETSC_STDOUT;
535     PetscCall(PetscLogTraceBegin(file));
536   }
537 
538   PetscCall(PetscOptionsGetViewer(comm, NULL, NULL, "-log_view", NULL, &format, &flg4));
539   if (flg4) {
540     if (format == PETSC_VIEWER_ASCII_XML || format == PETSC_VIEWER_ASCII_FLAMEGRAPH) {
541       PetscCall(PetscLogNestedBegin());
542     } else {
543       PetscCall(PetscLogDefaultBegin());
544     }
545   }
546   if (flg4 && (format == PETSC_VIEWER_ASCII_XML || format == PETSC_VIEWER_ASCII_FLAMEGRAPH)) {
547     PetscReal threshold = PetscRealConstant(0.01);
548     PetscCall(PetscOptionsGetReal(NULL, NULL, "-log_threshold", &threshold, &flg1));
549     if (flg1) PetscCall(PetscLogSetThreshold((PetscLogDouble)threshold, NULL));
550   }
551 #endif
552 
553   PetscCall(PetscOptionsGetBool(NULL, NULL, "-saws_options", &PetscOptionsPublish, NULL));
554   PetscCall(PetscOptionsGetBool(NULL, NULL, "-use_gpu_aware_mpi", &use_gpu_aware_mpi, NULL));
555 
556   /*
557        Print basic help message
558   */
559   if (hasHelp) {
560     PetscCall((*PetscHelpPrintf)(comm, "Options for all PETSc programs:\n"));
561     PetscCall((*PetscHelpPrintf)(comm, " -version: prints PETSc version\n"));
562     PetscCall((*PetscHelpPrintf)(comm, " -help intro: prints example description and PETSc version, and exits\n"));
563     PetscCall((*PetscHelpPrintf)(comm, " -help: prints example description, PETSc version, and available options for used routines\n"));
564     PetscCall((*PetscHelpPrintf)(comm, " -on_error_abort: cause an abort when an error is detected. Useful \n "));
565     PetscCall((*PetscHelpPrintf)(comm, "       only when run in the debugger\n"));
566     PetscCall((*PetscHelpPrintf)(comm, " -on_error_attach_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
567     PetscCall((*PetscHelpPrintf)(comm, "       start the debugger in new xterm\n"));
568     PetscCall((*PetscHelpPrintf)(comm, "       unless noxterm is given\n"));
569     PetscCall((*PetscHelpPrintf)(comm, " -start_in_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
570     PetscCall((*PetscHelpPrintf)(comm, "       start all processes in the debugger\n"));
571     PetscCall((*PetscHelpPrintf)(comm, " -on_error_emacs <machinename>\n"));
572     PetscCall((*PetscHelpPrintf)(comm, "    emacs jumps to error file\n"));
573     PetscCall((*PetscHelpPrintf)(comm, " -debugger_ranks [n1,n2,..] Ranks to start in debugger\n"));
574     PetscCall((*PetscHelpPrintf)(comm, " -debugger_pause [m] : delay (in seconds) to attach debugger\n"));
575     PetscCall((*PetscHelpPrintf)(comm, " -stop_for_debugger : prints message on how to attach debugger manually\n"));
576     PetscCall((*PetscHelpPrintf)(comm, "                      waits the delay for you to attach\n"));
577     PetscCall((*PetscHelpPrintf)(comm, " -display display: Location where X window graphics and debuggers are displayed\n"));
578     PetscCall((*PetscHelpPrintf)(comm, " -no_signal_handler: do not trap error signals\n"));
579     PetscCall((*PetscHelpPrintf)(comm, " -mpi_return_on_error: MPI returns error code, rather than abort on internal error\n"));
580     PetscCall((*PetscHelpPrintf)(comm, " -fp_trap: stop on floating point exceptions\n"));
581     PetscCall((*PetscHelpPrintf)(comm, "           note on IBM RS6000 this slows run greatly\n"));
582     PetscCall((*PetscHelpPrintf)(comm, " -malloc_dump <optional filename>: dump list of unfreed memory at conclusion\n"));
583     PetscCall((*PetscHelpPrintf)(comm, " -malloc: use PETSc error checking malloc (deprecated, use -malloc_debug)\n"));
584     PetscCall((*PetscHelpPrintf)(comm, " -malloc no: don't use PETSc error checking malloc (deprecated, use -malloc_debug no)\n"));
585     PetscCall((*PetscHelpPrintf)(comm, " -malloc_info: prints total memory usage\n"));
586     PetscCall((*PetscHelpPrintf)(comm, " -malloc_view <optional filename>: keeps log of all memory allocations, displays in PetscFinalize()\n"));
587     PetscCall((*PetscHelpPrintf)(comm, " -malloc_debug <true or false>: enables or disables extended checking for memory corruption\n"));
588     PetscCall((*PetscHelpPrintf)(comm, " -options_view: dump list of options inputted\n"));
589     PetscCall((*PetscHelpPrintf)(comm, " -options_left: dump list of unused options\n"));
590     PetscCall((*PetscHelpPrintf)(comm, " -options_left no: don't dump list of unused options\n"));
591     PetscCall((*PetscHelpPrintf)(comm, " -tmp tmpdir: alternative /tmp directory\n"));
592     PetscCall((*PetscHelpPrintf)(comm, " -shared_tmp: tmp directory is shared by all processors\n"));
593     PetscCall((*PetscHelpPrintf)(comm, " -not_shared_tmp: each processor has separate tmp directory\n"));
594     PetscCall((*PetscHelpPrintf)(comm, " -memory_view: print memory usage at end of run\n"));
595 #if defined(PETSC_USE_LOG)
596     PetscCall((*PetscHelpPrintf)(comm, " -get_total_flops: total flops over all processors\n"));
597     PetscCall((*PetscHelpPrintf)(comm, " -log_view [:filename:[format]]: logging objects and events\n"));
598     PetscCall((*PetscHelpPrintf)(comm, " -log_trace [filename]: prints trace of all PETSc calls\n"));
599     PetscCall((*PetscHelpPrintf)(comm, " -log_exclude <list,of,classnames>: exclude given classes from logging\n"));
600 #if defined(PETSC_HAVE_DEVICE)
601     PetscCall((*PetscHelpPrintf)(comm, " -log_view_gpu_time: log the GPU time for each and event\n"));
602 #endif
603 #if defined(PETSC_HAVE_MPE)
604     PetscCall((*PetscHelpPrintf)(comm, " -log_mpe: Also create logfile viewable through Jumpshot\n"));
605 #endif
606 #endif
607 #if defined(PETSC_USE_INFO)
608     PetscCall((*PetscHelpPrintf)(comm, " -info [filename][:[~]<list,of,classnames>[:[~]self]]: print verbose information\n"));
609 #endif
610     PetscCall((*PetscHelpPrintf)(comm, " -options_file <file>: reads options from file\n"));
611     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor: monitor options to standard output, including that set previously e.g. in option files\n"));
612     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor_cancel: cancels all hardwired option monitors\n"));
613     PetscCall((*PetscHelpPrintf)(comm, " -petsc_sleep n: sleeps n seconds before running program\n"));
614   }
615 
616 #if defined(PETSC_HAVE_POPEN)
617   {
618     char machine[128];
619     PetscCall(PetscOptionsGetString(NULL, NULL, "-popen_machine", machine, sizeof(machine), &flg1));
620     if (flg1) PetscCall(PetscPOpenSetMachine(machine));
621   }
622 #endif
623 
624   PetscCall(PetscOptionsGetReal(NULL, NULL, "-petsc_sleep", &si, &flg1));
625   if (flg1) PetscCall(PetscSleep(si));
626   PetscFunctionReturn(0);
627 }
628