xref: /petsc/src/sys/objects/init.c (revision aec76313382a76d73a95f2051cbe4b1eab55c1c7)
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_UNISTD_H)
11   #include <unistd.h>
12 #endif
13 
14 /* ------------------------Nasty global variables -------------------------------*/
15 /*
16      Indicates if PETSc started up MPI, or it was
17    already started before PETSc was initialized.
18 */
19 PetscBool PetscBeganMPI                 = PETSC_FALSE;
20 PetscBool PetscErrorHandlingInitialized = PETSC_FALSE;
21 PetscBool PetscInitializeCalled         = PETSC_FALSE;
22 PetscBool PetscFinalizeCalled           = PETSC_FALSE;
23 
24 PetscMPIInt PetscGlobalRank = -1;
25 PetscMPIInt PetscGlobalSize = -1;
26 
27 #if defined(PETSC_HAVE_KOKKOS)
28 PetscBool PetscBeganKokkos = PETSC_FALSE;
29 #endif
30 
31 #if defined(PETSC_HAVE_NVSHMEM)
32 PetscBool PetscBeganNvshmem       = PETSC_FALSE;
33 PetscBool PetscNvshmemInitialized = PETSC_FALSE;
34 #endif
35 
36 PetscBool use_gpu_aware_mpi = PetscDefined(HAVE_MPIUNI) ? PETSC_FALSE : PETSC_TRUE;
37 
38 PetscBool PetscPrintFunctionList = PETSC_FALSE;
39 
40 #if defined(PETSC_HAVE_COMPLEX)
41   #if defined(PETSC_COMPLEX_INSTANTIATE)
42 template <>
43 class std::complex<double>; /* instantiate complex template class */
44   #endif
45 
46 /*MC
47    PETSC_i - the imaginary number i
48 
49    Synopsis:
50    #include <petscsys.h>
51    PetscComplex PETSC_i;
52 
53    Level: beginner
54 
55    Note:
56    Complex numbers are automatically available if PETSc located a working complex implementation
57 
58 .seealso: `PetscRealPart()`, `PetscImaginaryPart()`, `PetscRealPartComplex()`, `PetscImaginaryPartComplex()`
59 M*/
60 PetscComplex PETSC_i;
61 MPI_Datatype MPIU___COMPLEX128 = 0;
62 #endif /* PETSC_HAVE_COMPLEX */
63 #if defined(PETSC_HAVE_REAL___FLOAT128)
64 MPI_Datatype MPIU___FLOAT128 = 0;
65 #endif
66 #if defined(PETSC_HAVE_REAL___FP16)
67 MPI_Datatype MPIU___FP16 = 0;
68 #endif
69 MPI_Datatype MPIU_2SCALAR    = 0;
70 MPI_Datatype MPIU_REAL_INT   = 0;
71 MPI_Datatype MPIU_SCALAR_INT = 0;
72 #if defined(PETSC_USE_64BIT_INDICES)
73 MPI_Datatype MPIU_2INT = 0;
74 #endif
75 MPI_Datatype MPI_4INT  = 0;
76 MPI_Datatype MPIU_4INT = 0;
77 MPI_Datatype MPIU_BOOL;
78 MPI_Datatype MPIU_ENUM;
79 MPI_Datatype MPIU_FORTRANADDR;
80 MPI_Datatype MPIU_SIZE_T;
81 
82 /*
83        Function that is called to display all error messages
84 */
85 PetscErrorCode (*PetscErrorPrintf)(const char[], ...)          = PetscErrorPrintfDefault;
86 PetscErrorCode (*PetscHelpPrintf)(MPI_Comm, const char[], ...) = PetscHelpPrintfDefault;
87 PetscErrorCode (*PetscVFPrintf)(FILE *, const char[], va_list) = PetscVFPrintfDefault;
88 
89 /*
90    Optional file where all PETSc output from various prints is saved
91 */
92 PETSC_INTERN FILE *petsc_history;
93 FILE              *petsc_history = NULL;
94 
95 PetscErrorCode PetscOpenHistoryFile(const char filename[], FILE **fd)
96 {
97   PetscMPIInt rank, size;
98   char        pfile[PETSC_MAX_PATH_LEN], pname[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN], date[64];
99   char        version[256];
100 
101   PetscFunctionBegin;
102   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
103   if (rank == 0) {
104     char arch[10];
105 
106     PetscCall(PetscGetArchType(arch, 10));
107     PetscCall(PetscGetDate(date, 64));
108     PetscCall(PetscGetVersion(version, 256));
109     PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
110     if (filename) {
111       PetscCall(PetscFixFilename(filename, fname));
112     } else {
113       PetscCall(PetscGetHomeDirectory(pfile, sizeof(pfile)));
114       PetscCall(PetscStrlcat(pfile, "/.petschistory", sizeof(pfile)));
115       PetscCall(PetscFixFilename(pfile, fname));
116     }
117 
118     *fd = fopen(fname, "a");
119     PetscCheck(fd, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Cannot open file: %s", fname);
120 
121     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
122     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s %s\n", version, date));
123     PetscCall(PetscGetProgramName(pname, sizeof(pname)));
124     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s on a %s, %d proc. with options:\n", pname, arch, size));
125     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
126 
127     PetscCall(PetscFFlush(*fd));
128   }
129   PetscFunctionReturn(PETSC_SUCCESS);
130 }
131 
132 PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE **fd)
133 {
134   PetscMPIInt rank;
135 
136   PetscFunctionBegin;
137   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
138   if (rank == 0) {
139     char date[64];
140     int  err;
141 
142     PetscCall(PetscGetDate(date, sizeof(date)));
143     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
144     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "Finished at %s\n", date));
145     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
146     PetscCall(PetscFFlush(*fd));
147     err = fclose(*fd);
148     PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_SYS, "fclose() failed on file");
149   }
150   PetscFunctionReturn(PETSC_SUCCESS);
151 }
152 
153 /*
154    This is ugly and probably belongs somewhere else, but I want to
155   be able to put a true MPI abort error handler with command line args.
156 
157     This is so MPI errors in the debugger will leave all the stack
158   frames. The default MP_Abort() cleans up and exits thus providing no useful information
159   in the debugger hence we call abort() instead of MPI_Abort().
160 */
161 
162 void Petsc_MPI_AbortOnError(PETSC_UNUSED MPI_Comm *comm, PetscMPIInt *flag, ...)
163 {
164   PetscFunctionBegin;
165   PetscCallContinue((*PetscErrorPrintf)("MPI error %d\n", *flag));
166   abort();
167 }
168 
169 void Petsc_MPI_DebuggerOnError(MPI_Comm *comm, PetscMPIInt *flag, ...)
170 {
171   PetscFunctionBegin;
172   PetscCallContinue((*PetscErrorPrintf)("MPI error %d\n", *flag));
173   if (PetscAttachDebugger()) PETSCABORT(*comm, (PetscErrorCode)*flag); /* hopeless so get out */
174 }
175 
176 /*@C
177   PetscEnd - Calls `PetscFinalize()` and then ends the program. This is useful if one
178   wishes a clean exit somewhere deep in the program.
179 
180   Collective on `PETSC_COMM_WORLD`
181 
182   Options Database Keys are the same as for `PetscFinalize()`
183 
184   Level: advanced
185 
186   Note:
187   See `PetscInitialize()` for more general runtime options.
188 
189 .seealso: `PetscInitialize()`, `PetscOptionsView()`, `PetscMallocDump()`, `PetscMPIDump()`, `PetscFinalize()`
190 @*/
191 PetscErrorCode PetscEnd(void)
192 {
193   PetscFunctionBegin;
194   PetscCall(PetscFinalize());
195   exit(0);
196   return PETSC_SUCCESS;
197 }
198 
199 PetscBool                   PetscOptionsPublish = PETSC_FALSE;
200 PETSC_INTERN PetscErrorCode PetscSetUseHBWMalloc_Private(void);
201 PETSC_INTERN PetscBool      petscsetmallocvisited;
202 static char                 emacsmachinename[256];
203 
204 PetscErrorCode (*PetscExternalVersionFunction)(MPI_Comm) = NULL;
205 PetscErrorCode (*PetscExternalHelpFunction)(MPI_Comm)    = NULL;
206 
207 #if PetscDefined(USE_LOG)
208   #include <petscviewer.h>
209 #endif
210 
211 /*@C
212   PetscSetHelpVersionFunctions - Sets functions that print help and version information
213   before the PETSc help and version information is printed. Must call BEFORE `PetscInitialize()`.
214   This routine enables a "higher-level" package that uses PETSc to print its messages first and control
215   how the PETSc help messages are printed.
216 
217   Input Parameters:
218 + help    - the help function (may be `NULL`)
219 - version - the version function (may be `NULL`)
220 
221   Level: developer
222 
223 .seealso: `PetscInitialize()`
224 @*/
225 PetscErrorCode PetscSetHelpVersionFunctions(PetscErrorCode (*help)(MPI_Comm), PetscErrorCode (*version)(MPI_Comm))
226 {
227   PetscFunctionBegin;
228   PetscExternalHelpFunction    = help;
229   PetscExternalVersionFunction = version;
230   PetscFunctionReturn(PETSC_SUCCESS);
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 {
239   char        string[64];
240   MPI_Comm    comm = PETSC_COMM_WORLD;
241   PetscBool   flg1 = PETSC_FALSE, flg2 = PETSC_FALSE, flag, hasHelp;
242   PetscBool   checkstack = PETSC_FALSE;
243   PetscReal   si;
244   PetscInt    intensity;
245   int         i;
246   PetscMPIInt rank;
247   char        version[256];
248 #if defined(PETSC_USE_LOG)
249   char              mname[PETSC_MAX_PATH_LEN];
250   PetscViewerFormat format;
251   PetscBool         flg4 = PETSC_FALSE;
252 #endif
253 
254   PetscFunctionBegin;
255   PetscCallMPI(MPI_Comm_rank(comm, &rank));
256 
257   if (PetscDefined(USE_DEBUG) && !PetscDefined(HAVE_THREADSAFETY)) checkstack = PETSC_TRUE;
258   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkstack", &checkstack, NULL));
259   PetscCall(PetscStackSetCheck(checkstack));
260 
261   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkfunctionlist", &PetscPrintFunctionList, NULL));
262 
263 #if !defined(PETSC_HAVE_THREADSAFETY)
264   if (!(PETSC_RUNNING_ON_VALGRIND)) {
265     /*
266       Setup the memory management; support for tracing malloc() usage
267     */
268     PetscBool mdebug = PETSC_FALSE, eachcall = PETSC_FALSE, initializenan = PETSC_FALSE, mlog = PETSC_FALSE;
269     PetscBool flg3 = PETSC_FALSE;
270 
271     if (PetscDefined(USE_DEBUG)) {
272       mdebug        = PETSC_TRUE;
273       initializenan = PETSC_TRUE;
274       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
275     } else {
276       /* don't warn about unused option */
277       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
278       flg1 = PETSC_FALSE;
279     }
280     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_debug", &flg2, &flg3));
281     if (flg1 || flg2) {
282       mdebug        = PETSC_TRUE;
283       eachcall      = PETSC_TRUE;
284       initializenan = PETSC_TRUE;
285     } else if (flg3 && !flg2) {
286       mdebug        = PETSC_FALSE;
287       eachcall      = PETSC_FALSE;
288       initializenan = PETSC_FALSE;
289     }
290 
291     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_requested_size", &flg1, &flg2));
292     if (flg2) PetscCall(PetscMallocLogRequestedSizeSet(flg1));
293 
294     PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_view", &mlog));
295     if (mlog) mdebug = PETSC_TRUE;
296     /* the next line is deprecated */
297     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_dump", &mdebug, NULL));
298     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &mdebug, NULL));
299     if (mdebug) PetscCall(PetscMallocSetDebug(eachcall, initializenan));
300     if (mlog) {
301       PetscReal logthreshold = 0;
302       PetscCall(PetscOptionsGetReal(NULL, NULL, "-malloc_view_threshold", &logthreshold, NULL));
303       PetscCall(PetscMallocViewSet(logthreshold));
304     }
305   #if defined(PETSC_USE_LOG)
306     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &PetscLogMemory, NULL));
307   #endif
308   }
309 
310   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_coalesce", &flg1, &flg2));
311   if (flg2) PetscCall(PetscMallocSetCoalesce(flg1));
312   flg1 = PETSC_FALSE;
313   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_hbw", &flg1, NULL));
314   /* ignore this option if malloc is already set */
315   if (flg1 && !petscsetmallocvisited) PetscCall(PetscSetUseHBWMalloc_Private());
316 
317   flg1 = PETSC_FALSE;
318   PetscCall(PetscOptionsGetBool(NULL, NULL, "-memory_view", &flg1, NULL));
319   if (flg1) PetscCall(PetscMemorySetGetMaximumUsage());
320 #endif
321 
322 #if defined(PETSC_USE_LOG)
323   PetscCall(PetscOptionsHasName(NULL, NULL, "-objects_dump", &PetscObjectsLog));
324 #endif
325 
326   /*
327       Set the display variable for graphics
328   */
329   PetscCall(PetscSetDisplay());
330 
331   /*
332      Print main application help message
333   */
334   PetscCall(PetscOptionsHasHelp(NULL, &hasHelp));
335   if (help && hasHelp) {
336     PetscCall(PetscPrintf(comm, "%s", help));
337     PetscCall(PetscPrintf(comm, "----------------------------------------\n"));
338   }
339 
340   /*
341       Print the PETSc version information
342   */
343   PetscCall(PetscOptionsHasName(NULL, NULL, "-version", &flg1));
344   if (flg1 || hasHelp) {
345     /*
346        Print "higher-level" package version message
347     */
348     if (PetscExternalVersionFunction) PetscCall((*PetscExternalVersionFunction)(comm));
349 
350     PetscCall(PetscGetVersion(version, 256));
351     if (!PetscCIEnabledPortableErrorOutput) PetscCall((*PetscHelpPrintf)(comm, "%s\n", version));
352     PetscCall((*PetscHelpPrintf)(comm, "%s", PETSC_AUTHOR_INFO));
353     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/changes for recent updates.\n"));
354     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/faq for problems.\n"));
355     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/manualpages for help. \n"));
356     if (!PetscCIEnabledPortableErrorOutput) PetscCall((*PetscHelpPrintf)(comm, "Libraries linked from %s\n", PETSC_LIB_DIR));
357     PetscCall((*PetscHelpPrintf)(comm, "----------------------------------------\n"));
358   }
359 
360   /*
361        Print "higher-level" package help message
362   */
363   if (hasHelp) {
364     PetscBool hasHelpIntro;
365 
366     if (PetscExternalHelpFunction) PetscCall((*PetscExternalHelpFunction)(comm));
367     PetscCall(PetscOptionsHasHelpIntro_Internal(NULL, &hasHelpIntro));
368     if (hasHelpIntro) {
369       PetscCall(PetscOptionsDestroyDefault());
370       PetscCall(PetscFreeMPIResources());
371       PetscCallMPI(MPI_Finalize());
372       exit(0);
373     }
374   }
375 
376   /*
377       Setup the error handling
378   */
379   flg1 = PETSC_FALSE;
380   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_abort", &flg1, NULL));
381   if (flg1) {
382     PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_ARE_FATAL));
383     PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
384   }
385   flg1 = PETSC_FALSE;
386   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_mpiabort", &flg1, NULL));
387   if (flg1) PetscCall(PetscPushErrorHandler(PetscMPIAbortErrorHandler, NULL));
388   flg1 = PETSC_FALSE;
389   PetscCall(PetscOptionsGetBool(NULL, NULL, "-mpi_return_on_error", &flg1, NULL));
390   if (flg1) PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_RETURN));
391   flg1 = PETSC_FALSE;
392   PetscCall(PetscOptionsGetBool(NULL, NULL, "-no_signal_handler", &flg1, NULL));
393   if (!flg1) PetscCall(PetscPushSignalHandler(PetscSignalHandlerDefault, (void *)0));
394 
395   /*
396       Setup debugger information
397   */
398   PetscCall(PetscSetDefaultDebugger());
399   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_attach_debugger", string, sizeof(string), &flg1));
400   if (flg1) {
401     MPI_Errhandler err_handler;
402 
403     PetscCall(PetscSetDebuggerFromString(string));
404     PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_DebuggerOnError, &err_handler));
405     PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
406     PetscCall(PetscPushErrorHandler(PetscAttachDebuggerErrorHandler, NULL));
407   }
408   PetscCall(PetscOptionsGetString(NULL, NULL, "-debug_terminal", string, sizeof(string), &flg1));
409   if (flg1) PetscCall(PetscSetDebugTerminal(string));
410   PetscCall(PetscOptionsGetString(NULL, NULL, "-start_in_debugger", string, sizeof(string), &flg1));
411   PetscCall(PetscOptionsGetString(NULL, NULL, "-stop_for_debugger", string, sizeof(string), &flg2));
412   if (flg1 || flg2) {
413     PetscMPIInt    size;
414     PetscInt       lsize, *ranks;
415     MPI_Errhandler err_handler;
416     /*
417        we have to make sure that all processors have opened
418        connections to all other processors, otherwise once the
419        debugger has stated it is likely to receive a SIGUSR1
420        and kill the program.
421     */
422     PetscCallMPI(MPI_Comm_size(comm, &size));
423     if (size > 2) {
424       PetscMPIInt dummy = 0;
425       MPI_Status  status;
426       for (i = 0; i < size; i++) {
427         if (rank != i) PetscCallMPI(MPI_Send(&dummy, 1, MPI_INT, i, 109, comm));
428       }
429       for (i = 0; i < size; i++) {
430         if (rank != i) PetscCallMPI(MPI_Recv(&dummy, 1, MPI_INT, i, 109, comm, &status));
431       }
432     }
433     /* check if this processor node should be in debugger */
434     PetscCall(PetscMalloc1(size, &ranks));
435     lsize = size;
436     /* Deprecated in 3.14 */
437     PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_nodes", ranks, &lsize, &flag));
438     if (flag) {
439       const char *const quietopt = "-options_suppress_deprecated_warnings";
440       char              msg[4096];
441       PetscBool         quiet = PETSC_FALSE;
442 
443       PetscCall(PetscOptionsGetBool(NULL, NULL, quietopt, &quiet, NULL));
444       if (!quiet) {
445         PetscCall(PetscStrncpy(msg, "** PETSc DEPRECATION WARNING ** : the option ", sizeof(msg)));
446         PetscCall(PetscStrlcat(msg, "-debugger_nodes", sizeof(msg)));
447         PetscCall(PetscStrlcat(msg, " is deprecated as of version ", sizeof(msg)));
448         PetscCall(PetscStrlcat(msg, "3.14", sizeof(msg)));
449         PetscCall(PetscStrlcat(msg, " and will be removed in a future release.", sizeof(msg)));
450         PetscCall(PetscStrlcat(msg, " Please use the option ", sizeof(msg)));
451         PetscCall(PetscStrlcat(msg, "-debugger_ranks", sizeof(msg)));
452         PetscCall(PetscStrlcat(msg, " instead.", sizeof(msg)));
453         PetscCall(PetscStrlcat(msg, " (Silence this warning with ", sizeof(msg)));
454         PetscCall(PetscStrlcat(msg, quietopt, sizeof(msg)));
455         PetscCall(PetscStrlcat(msg, ")\n", sizeof(msg)));
456         PetscCall(PetscPrintf(comm, "%s", msg));
457       }
458     } else {
459       lsize = size;
460       PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_ranks", ranks, &lsize, &flag));
461     }
462     if (flag) {
463       for (i = 0; i < lsize; i++) {
464         if (ranks[i] == rank) {
465           flag = PETSC_FALSE;
466           break;
467         }
468       }
469     }
470     if (!flag) {
471       PetscCall(PetscSetDebuggerFromString(string));
472       PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
473       if (flg1) {
474         PetscCall(PetscAttachDebugger());
475       } else {
476         PetscCall(PetscStopForDebugger());
477       }
478       PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_AbortOnError, &err_handler));
479       PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
480     } else {
481       PetscCall(PetscWaitOnError());
482     }
483     PetscCall(PetscFree(ranks));
484   }
485 
486   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_emacs", emacsmachinename, sizeof(emacsmachinename), &flg1));
487   if (flg1 && rank == 0) PetscCall(PetscPushErrorHandler(PetscEmacsClientErrorHandler, emacsmachinename));
488 
489     /*
490         Setup profiling and logging
491   */
492 #if defined(PETSC_USE_INFO)
493   {
494     PetscCall(PetscInfoSetFromOptions(NULL));
495   }
496 #endif
497   PetscCall(PetscDetermineInitialFPTrap());
498   flg1 = PETSC_FALSE;
499   PetscCall(PetscOptionsGetBool(NULL, NULL, "-fp_trap", &flg1, &flag));
500   if (flag) PetscCall(PetscSetFPTrap(flg1 ? PETSC_FP_TRAP_ON : PETSC_FP_TRAP_OFF));
501   PetscCall(PetscOptionsGetInt(NULL, NULL, "-check_pointer_intensity", &intensity, &flag));
502   if (flag) PetscCall(PetscCheckPointerSetIntensity(intensity));
503 #if defined(PETSC_USE_LOG)
504   mname[0] = 0;
505   PetscCall(PetscOptionsGetString(NULL, NULL, "-history", mname, sizeof(mname), &flg1));
506   if (flg1) {
507     if (mname[0]) {
508       PetscCall(PetscOpenHistoryFile(mname, &petsc_history));
509     } else {
510       PetscCall(PetscOpenHistoryFile(NULL, &petsc_history));
511     }
512   }
513 
514   PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_sync", &PetscLogSyncOn, NULL));
515 
516   #if defined(PETSC_HAVE_MPE)
517   flg1 = PETSC_FALSE;
518   PetscCall(PetscOptionsHasName(NULL, NULL, "-log_mpe", &flg1));
519   if (flg1) PetscCall(PetscLogMPEBegin());
520   #endif
521   flg1 = PETSC_FALSE;
522   PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_all", &flg1, NULL));
523   if (flg1) PetscCall(PetscLogAllBegin());
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       PetscCall(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, &flg1));
555   if (!flg1) PetscCall(PetscOptionsGetBool(NULL, NULL, "-sf_use_gpu_aware_mpi", &use_gpu_aware_mpi, &flg1)); // an alias option
556 
557   /*
558        Print basic help message
559   */
560   if (hasHelp) {
561     PetscCall((*PetscHelpPrintf)(comm, "Options for all PETSc programs:\n"));
562     PetscCall((*PetscHelpPrintf)(comm, " -version: prints PETSc version\n"));
563     PetscCall((*PetscHelpPrintf)(comm, " -help intro: prints example description and PETSc version, and exits\n"));
564     PetscCall((*PetscHelpPrintf)(comm, " -help: prints example description, PETSc version, and available options for used routines\n"));
565     PetscCall((*PetscHelpPrintf)(comm, " -on_error_abort: cause an abort when an error is detected. Useful \n "));
566     PetscCall((*PetscHelpPrintf)(comm, "       only when run in the debugger\n"));
567     PetscCall((*PetscHelpPrintf)(comm, " -on_error_attach_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
568     PetscCall((*PetscHelpPrintf)(comm, "       start the debugger in new xterm\n"));
569     PetscCall((*PetscHelpPrintf)(comm, "       unless noxterm is given\n"));
570     PetscCall((*PetscHelpPrintf)(comm, " -start_in_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
571     PetscCall((*PetscHelpPrintf)(comm, "       start all processes in the debugger\n"));
572     PetscCall((*PetscHelpPrintf)(comm, " -on_error_emacs <machinename>\n"));
573     PetscCall((*PetscHelpPrintf)(comm, "    emacs jumps to error file\n"));
574     PetscCall((*PetscHelpPrintf)(comm, " -debugger_ranks [n1,n2,..] Ranks to start in debugger\n"));
575     PetscCall((*PetscHelpPrintf)(comm, " -debugger_pause [m] : delay (in seconds) to attach debugger\n"));
576     PetscCall((*PetscHelpPrintf)(comm, " -stop_for_debugger : prints message on how to attach debugger manually\n"));
577     PetscCall((*PetscHelpPrintf)(comm, "                      waits the delay for you to attach\n"));
578     PetscCall((*PetscHelpPrintf)(comm, " -display display: Location where X window graphics and debuggers are displayed\n"));
579     PetscCall((*PetscHelpPrintf)(comm, " -no_signal_handler: do not trap error signals\n"));
580     PetscCall((*PetscHelpPrintf)(comm, " -mpi_return_on_error: MPI returns error code, rather than abort on internal error\n"));
581     PetscCall((*PetscHelpPrintf)(comm, " -fp_trap: stop on floating point exceptions\n"));
582     PetscCall((*PetscHelpPrintf)(comm, "           note on IBM RS6000 this slows run greatly\n"));
583     PetscCall((*PetscHelpPrintf)(comm, " -malloc_dump <optional filename>: dump list of unfreed memory at conclusion\n"));
584     PetscCall((*PetscHelpPrintf)(comm, " -malloc_view <optional filename>: keeps log of all memory allocations, displays in PetscFinalize()\n"));
585     PetscCall((*PetscHelpPrintf)(comm, " -malloc_debug <true or false>: enables or disables extended checking for memory corruption\n"));
586     PetscCall((*PetscHelpPrintf)(comm, " -options_view: dump list of options inputted\n"));
587     PetscCall((*PetscHelpPrintf)(comm, " -options_left: dump list of unused options\n"));
588     PetscCall((*PetscHelpPrintf)(comm, " -options_left no: don't dump list of unused options\n"));
589     PetscCall((*PetscHelpPrintf)(comm, " -tmp tmpdir: alternative /tmp directory\n"));
590     PetscCall((*PetscHelpPrintf)(comm, " -shared_tmp: tmp directory is shared by all processors\n"));
591     PetscCall((*PetscHelpPrintf)(comm, " -not_shared_tmp: each processor has separate tmp directory\n"));
592     PetscCall((*PetscHelpPrintf)(comm, " -memory_view: print memory usage at end of run\n"));
593 #if defined(PETSC_USE_LOG)
594     PetscCall((*PetscHelpPrintf)(comm, " -get_total_flops: total flops over all processors\n"));
595     PetscCall((*PetscHelpPrintf)(comm, " -log_view [:filename:[format]]: logging objects and events\n"));
596     PetscCall((*PetscHelpPrintf)(comm, " -log_trace [filename]: prints trace of all PETSc calls\n"));
597     PetscCall((*PetscHelpPrintf)(comm, " -log_exclude <list,of,classnames>: exclude given classes from logging\n"));
598   #if defined(PETSC_HAVE_DEVICE)
599     PetscCall((*PetscHelpPrintf)(comm, " -log_view_gpu_time: log the GPU time for each and event\n"));
600   #endif
601   #if defined(PETSC_HAVE_MPE)
602     PetscCall((*PetscHelpPrintf)(comm, " -log_mpe: Also create logfile viewable through Jumpshot\n"));
603   #endif
604 #endif
605 #if defined(PETSC_USE_INFO)
606     PetscCall((*PetscHelpPrintf)(comm, " -info [filename][:[~]<list,of,classnames>[:[~]self]]: print verbose information\n"));
607 #endif
608     PetscCall((*PetscHelpPrintf)(comm, " -options_file <file>: reads options from file\n"));
609     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor: monitor options to standard output, including that set previously e.g. in option files\n"));
610     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor_cancel: cancels all hardwired option monitors\n"));
611     PetscCall((*PetscHelpPrintf)(comm, " -petsc_sleep n: sleeps n seconds before running program\n"));
612   }
613 
614 #if defined(PETSC_HAVE_POPEN)
615   {
616     char machine[128];
617     PetscCall(PetscOptionsGetString(NULL, NULL, "-popen_machine", machine, sizeof(machine), &flg1));
618     if (flg1) PetscCall(PetscPOpenSetMachine(machine));
619   }
620 #endif
621 
622   PetscCall(PetscOptionsGetReal(NULL, NULL, "-petsc_sleep", &si, &flg1));
623   if (flg1) PetscCall(PetscSleep(si));
624   PetscFunctionReturn(PETSC_SUCCESS);
625 }
626