xref: /petsc/src/sys/objects/init.c (revision f0b74427b291237450348b8514d67555ad08bce6)
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 #include <petsc/private/logimpl.h>
10 
11 #if defined(PETSC_HAVE_UNISTD_H)
12   #include <unistd.h>
13 #endif
14 
15 /* ------------------------Nasty global variables -------------------------------*/
16 /*
17      Indicates if PETSc started up MPI, or it was
18    already started before PETSc was initialized.
19 */
20 PetscBool PetscBeganMPI                 = PETSC_FALSE;
21 PetscBool PetscErrorHandlingInitialized = PETSC_FALSE;
22 PetscBool PetscInitializeCalled         = PETSC_FALSE;
23 PetscBool PetscFinalizeCalled           = PETSC_FALSE;
24 
25 PetscMPIInt PetscGlobalRank = -1;
26 PetscMPIInt PetscGlobalSize = -1;
27 
28 #if defined(PETSC_HAVE_KOKKOS)
29 PetscBool PetscBeganKokkos = PETSC_FALSE;
30 #endif
31 
32 #if defined(PETSC_HAVE_NVSHMEM)
33 PetscBool PetscBeganNvshmem       = PETSC_FALSE;
34 PetscBool PetscNvshmemInitialized = PETSC_FALSE;
35 #endif
36 
37 PetscBool use_gpu_aware_mpi = PetscDefined(HAVE_MPIUNI) ? PETSC_FALSE : PETSC_TRUE;
38 
39 PetscBool PetscPrintFunctionList = PETSC_FALSE;
40 
41 #if defined(PETSC_HAVE_COMPLEX)
42 /*MC
43    PETSC_i - the imaginary number i
44 
45    Synopsis:
46    #include <petscsys.h>
47    PetscComplex PETSC_i;
48 
49    Level: beginner
50 
51    Note:
52    Complex numbers are automatically available if PETSc located a working complex implementation
53 
54 .seealso: `PetscRealPart()`, `PetscImaginaryPart()`, `PetscRealPartComplex()`, `PetscImaginaryPartComplex()`
55 M*/
56 PetscComplex PETSC_i;
57 MPI_Datatype MPIU___COMPLEX128 = 0;
58 #endif /* PETSC_HAVE_COMPLEX */
59 #if defined(PETSC_HAVE_REAL___FLOAT128)
60 MPI_Datatype MPIU___FLOAT128 = 0;
61 #endif
62 #if defined(PETSC_HAVE_REAL___FP16)
63 MPI_Datatype MPIU___FP16 = 0;
64 #endif
65 MPI_Datatype MPIU_2SCALAR    = 0;
66 MPI_Datatype MPIU_REAL_INT   = 0;
67 MPI_Datatype MPIU_SCALAR_INT = 0;
68 #if defined(PETSC_USE_64BIT_INDICES)
69 MPI_Datatype MPIU_2INT       = 0;
70 MPI_Datatype MPIU_INT_MPIINT = 0;
71 #endif
72 MPI_Datatype MPI_4INT  = 0;
73 MPI_Datatype MPIU_4INT = 0;
74 MPI_Datatype MPIU_BOOL;
75 MPI_Datatype MPIU_ENUM;
76 MPI_Datatype MPIU_FORTRANADDR;
77 MPI_Datatype MPIU_SIZE_T;
78 
79 /*
80        Function that is called to display all error messages
81 */
82 PetscErrorCode (*PetscErrorPrintf)(const char[], ...)          = PetscErrorPrintfDefault;
83 PetscErrorCode (*PetscHelpPrintf)(MPI_Comm, const char[], ...) = PetscHelpPrintfDefault;
84 PetscErrorCode (*PetscVFPrintf)(FILE *, const char[], va_list) = PetscVFPrintfDefault;
85 
86 /*
87    Optional file where all PETSc output from various prints is saved
88 */
89 PETSC_INTERN FILE *petsc_history;
90 FILE              *petsc_history = NULL;
91 
92 static PetscErrorCode PetscOpenHistoryFile(const char filename[], FILE **fd)
93 {
94   PetscMPIInt rank, size;
95   char        pfile[PETSC_MAX_PATH_LEN], pname[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN], date[64];
96   char        version[256];
97 
98   PetscFunctionBegin;
99   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
100   if (rank == 0) {
101     char arch[10];
102 
103     PetscCall(PetscGetArchType(arch, 10));
104     PetscCall(PetscGetDate(date, 64));
105     PetscCall(PetscGetVersion(version, 256));
106     PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
107     if (filename) {
108       PetscCall(PetscFixFilename(filename, fname));
109     } else {
110       PetscCall(PetscGetHomeDirectory(pfile, sizeof(pfile)));
111       PetscCall(PetscStrlcat(pfile, "/.petschistory", sizeof(pfile)));
112       PetscCall(PetscFixFilename(pfile, fname));
113     }
114 
115     *fd = fopen(fname, "a");
116     PetscCheck(fd, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Cannot open file: %s", fname);
117 
118     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
119     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s %s\n", version, date));
120     PetscCall(PetscGetProgramName(pname, sizeof(pname)));
121     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s on a %s, %d proc. with options:\n", pname, arch, size));
122     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
123 
124     PetscCall(PetscFFlush(*fd));
125   }
126   PetscFunctionReturn(PETSC_SUCCESS);
127 }
128 
129 PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE **fd)
130 {
131   PetscMPIInt rank;
132 
133   PetscFunctionBegin;
134   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
135   if (rank == 0) {
136     char date[64];
137     int  err;
138 
139     PetscCall(PetscGetDate(date, sizeof(date)));
140     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
141     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "Finished at %s\n", date));
142     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
143     PetscCall(PetscFFlush(*fd));
144     err = fclose(*fd);
145     PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_SYS, "fclose() failed on file");
146   }
147   PetscFunctionReturn(PETSC_SUCCESS);
148 }
149 
150 /*
151    This is ugly and probably belongs somewhere else, but I want to
152   be able to put a true MPI abort error handler with command line args.
153 
154     This is so MPI errors in the debugger will leave all the stack
155   frames. The default MP_Abort() cleans up and exits thus providing no useful information
156   in the debugger hence we call abort() instead of MPI_Abort().
157 */
158 
159 static void Petsc_MPI_AbortOnError(PETSC_UNUSED MPI_Comm *comm, PetscMPIInt *flag, ...)
160 {
161   PetscFunctionBegin;
162   PetscCallContinue((*PetscErrorPrintf)("MPI error %d\n", *flag));
163   abort();
164 }
165 
166 static void Petsc_MPI_DebuggerOnError(MPI_Comm *comm, PetscMPIInt *flag, ...)
167 {
168   PetscFunctionBegin;
169   PetscCallContinue((*PetscErrorPrintf)("MPI error %d\n", *flag));
170   if (PetscAttachDebugger()) PETSCABORT(*comm, (PetscErrorCode)*flag); /* hopeless so get out */
171 }
172 
173 /*@
174   PetscEnd - Calls `PetscFinalize()` and then ends the program. This is useful if one
175   wishes a clean exit somewhere deep in the program.
176 
177   Collective on `PETSC_COMM_WORLD`
178 
179   Level: advanced
180 
181   Note:
182   See `PetscInitialize()` for more general runtime options.
183 
184 .seealso: `PetscInitialize()`, `PetscOptionsView()`, `PetscMallocDump()`, `PetscMPIDump()`, `PetscFinalize()`
185 @*/
186 PetscErrorCode PetscEnd(void)
187 {
188   PetscFunctionBegin;
189   PetscCall(PetscFinalize());
190   exit(0);
191   return PETSC_SUCCESS;
192 }
193 
194 PetscBool                   PetscOptionsPublish = PETSC_FALSE;
195 PETSC_INTERN PetscErrorCode PetscSetUseHBWMalloc_Private(void);
196 PETSC_INTERN PetscBool      petscsetmallocvisited;
197 static char                 emacsmachinename[256];
198 
199 PetscErrorCode (*PetscExternalVersionFunction)(MPI_Comm) = NULL;
200 PetscErrorCode (*PetscExternalHelpFunction)(MPI_Comm)    = NULL;
201 
202 #include <petscviewer.h>
203 
204 /*@C
205   PetscSetHelpVersionFunctions - Sets functions that print help and version information
206   before the PETSc help and version information is printed.
207 
208   No Fortran Support
209 
210   Input Parameters:
211 + help    - the help function (may be `NULL`)
212 - version - the version function (may be `NULL`)
213 
214   Level: developer
215 
216   Notes:
217   Must call BEFORE `PetscInitialize()`.
218 
219   This routine enables a "higher-level" package that uses PETSc to print its messages first and
220   control how the PETSc help messages are printed.
221 
222 .seealso: `PetscInitialize()`
223 @*/
224 PetscErrorCode PetscSetHelpVersionFunctions(PetscErrorCode (*help)(MPI_Comm), PetscErrorCode (*version)(MPI_Comm))
225 {
226   PetscFunctionBegin;
227   PetscExternalHelpFunction    = help;
228   PetscExternalVersionFunction = version;
229   PetscFunctionReturn(PETSC_SUCCESS);
230 }
231 
232 PETSC_INTERN PetscBool PetscObjectsLog;
233 
234 PETSC_INTERN PetscErrorCode PetscOptionsCheckInitial_Private(const char help[])
235 {
236   char        string[64];
237   MPI_Comm    comm = PETSC_COMM_WORLD;
238   PetscBool   flg1 = PETSC_FALSE, flg2 = PETSC_FALSE, flag, hasHelp;
239   PetscBool   checkstack = PETSC_FALSE;
240   PetscReal   si;
241   PetscInt    intensity;
242   int         i;
243   PetscMPIInt rank;
244   char        version[256];
245 
246   PetscFunctionBegin;
247   PetscCallMPI(MPI_Comm_rank(comm, &rank));
248 
249   if (PetscDefined(USE_DEBUG) && !PetscDefined(HAVE_THREADSAFETY)) checkstack = PETSC_TRUE;
250   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkstack", &checkstack, NULL));
251   PetscCall(PetscStackSetCheck(checkstack));
252 
253   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkfunctionlist", &PetscPrintFunctionList, NULL));
254 
255 #if !defined(PETSC_HAVE_THREADSAFETY)
256   if (!(PETSC_RUNNING_ON_VALGRIND)) {
257     /*
258       Setup the memory management; support for tracing malloc() usage
259     */
260     PetscBool mdebug = PETSC_FALSE, eachcall = PETSC_FALSE, initializenan = PETSC_FALSE, mlog = PETSC_FALSE;
261     PetscBool flg3 = PETSC_FALSE;
262 
263     if (PetscDefined(USE_DEBUG)) {
264       mdebug        = PETSC_TRUE;
265       initializenan = PETSC_TRUE;
266       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
267     } else {
268       /* don't warn about unused option */
269       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
270       flg1 = PETSC_FALSE;
271     }
272     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_debug", &flg2, &flg3));
273     if (flg1 || flg2) {
274       mdebug        = PETSC_TRUE;
275       eachcall      = PETSC_TRUE;
276       initializenan = PETSC_TRUE;
277     } else if (flg3 && !flg2) {
278       mdebug        = PETSC_FALSE;
279       eachcall      = PETSC_FALSE;
280       initializenan = PETSC_FALSE;
281     }
282 
283     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_requested_size", &flg1, &flg2));
284     if (flg2) PetscCall(PetscMallocLogRequestedSizeSet(flg1));
285 
286     PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_view", &mlog));
287     if (mlog) mdebug = PETSC_TRUE;
288     /* the next line is deprecated */
289     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_dump", &mdebug, NULL));
290     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &mdebug, NULL));
291     if (mdebug) PetscCall(PetscMallocSetDebug(eachcall, initializenan));
292     if (mlog) {
293       PetscReal logthreshold = 0;
294       PetscCall(PetscOptionsGetReal(NULL, NULL, "-malloc_view_threshold", &logthreshold, NULL));
295       PetscCall(PetscMallocViewSet(logthreshold));
296     }
297     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &PetscLogMemory, NULL));
298   }
299 
300   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_coalesce", &flg1, &flg2));
301   if (flg2) PetscCall(PetscMallocSetCoalesce(flg1));
302   flg1 = PETSC_FALSE;
303   PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_hbw", &flg1, NULL));
304   /* ignore this option if malloc is already set */
305   if (flg1 && !petscsetmallocvisited) PetscCall(PetscSetUseHBWMalloc_Private());
306 
307   flg1 = PETSC_FALSE;
308   PetscCall(PetscOptionsGetBool(NULL, NULL, "-memory_view", &flg1, NULL));
309   if (flg1) PetscCall(PetscMemorySetGetMaximumUsage());
310 #endif
311 
312   PetscCall(PetscOptionsHasName(NULL, NULL, "-objects_dump", &PetscObjectsLog));
313 
314   /*
315       Set the display variable for graphics
316   */
317   PetscCall(PetscSetDisplay());
318 
319   /*
320      Print main application help message
321   */
322   PetscCall(PetscOptionsHasHelp(NULL, &hasHelp));
323   if (help && hasHelp) {
324     PetscCall(PetscPrintf(comm, "%s", help));
325     PetscCall(PetscPrintf(comm, "----------------------------------------\n"));
326   }
327 
328   /*
329       Print the PETSc version information
330   */
331   PetscCall(PetscOptionsHasName(NULL, NULL, "-version", &flg1));
332   if (flg1 || hasHelp) {
333     /*
334        Print "higher-level" package version message
335     */
336     if (PetscExternalVersionFunction) PetscCall((*PetscExternalVersionFunction)(comm));
337 
338     PetscCall(PetscGetVersion(version, 256));
339     if (!PetscCIEnabledPortableErrorOutput) PetscCall((*PetscHelpPrintf)(comm, "%s\n", version));
340     PetscCall((*PetscHelpPrintf)(comm, "%s", PETSC_AUTHOR_INFO));
341     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/changes for recent updates.\n"));
342     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/faq for problems.\n"));
343     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/manualpages for help.\n"));
344     if (!PetscCIEnabledPortableErrorOutput) PetscCall((*PetscHelpPrintf)(comm, "Libraries linked from %s\n", PETSC_LIB_DIR));
345     PetscCall((*PetscHelpPrintf)(comm, "----------------------------------------\n"));
346   }
347 
348   /*
349        Print "higher-level" package help message
350   */
351   if (hasHelp) {
352     PetscBool hasHelpIntro;
353 
354     if (PetscExternalHelpFunction) PetscCall((*PetscExternalHelpFunction)(comm));
355     PetscCall(PetscOptionsHasHelpIntro_Internal(NULL, &hasHelpIntro));
356     if (hasHelpIntro) {
357       PetscCall(PetscOptionsDestroyDefault());
358       PetscCall(PetscFreeMPIResources());
359       PetscCallMPI(MPI_Finalize());
360       exit(0);
361     }
362   }
363 
364   /*
365       Setup the error handling
366   */
367   flg1 = PETSC_FALSE;
368   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_abort", &flg1, NULL));
369   if (flg1) {
370     PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_ARE_FATAL));
371     PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
372   }
373   flg1 = PETSC_FALSE;
374   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_mpiabort", &flg1, NULL));
375   if (flg1) PetscCall(PetscPushErrorHandler(PetscMPIAbortErrorHandler, NULL));
376   flg1 = PETSC_FALSE;
377   PetscCall(PetscOptionsGetBool(NULL, NULL, "-mpi_return_on_error", &flg1, NULL));
378   if (flg1) PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_RETURN));
379   flg1 = PETSC_FALSE;
380   PetscCall(PetscOptionsGetBool(NULL, NULL, "-no_signal_handler", &flg1, NULL));
381   if (!flg1) PetscCall(PetscPushSignalHandler(PetscSignalHandlerDefault, NULL));
382 
383   /*
384       Setup debugger information
385   */
386   PetscCall(PetscSetDefaultDebugger());
387   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_attach_debugger", string, sizeof(string), &flg1));
388   if (flg1) {
389     MPI_Errhandler err_handler;
390 
391     PetscCall(PetscSetDebuggerFromString(string));
392     PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_DebuggerOnError, &err_handler));
393     PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
394     PetscCall(PetscPushErrorHandler(PetscAttachDebuggerErrorHandler, NULL));
395   }
396   PetscCall(PetscOptionsGetString(NULL, NULL, "-debug_terminal", string, sizeof(string), &flg1));
397   if (flg1) PetscCall(PetscSetDebugTerminal(string));
398   PetscCall(PetscOptionsGetString(NULL, NULL, "-start_in_debugger", string, sizeof(string), &flg1));
399   PetscCall(PetscOptionsGetString(NULL, NULL, "-stop_for_debugger", string, sizeof(string), &flg2));
400   if (flg1 || flg2) {
401     PetscMPIInt    size;
402     PetscInt       lsize, *ranks;
403     MPI_Errhandler err_handler;
404     /*
405        we have to make sure that all processors have opened
406        connections to all other processors, otherwise once the
407        debugger has stated it is likely to receive a SIGUSR1
408        and kill the program.
409     */
410     PetscCallMPI(MPI_Comm_size(comm, &size));
411     if (size > 2) {
412       PetscMPIInt dummy = 0;
413       MPI_Status  status;
414       for (i = 0; i < size; i++) {
415         if (rank != i) PetscCallMPI(MPI_Send(&dummy, 1, MPI_INT, i, 109, comm));
416       }
417       for (i = 0; i < size; i++) {
418         if (rank != i) PetscCallMPI(MPI_Recv(&dummy, 1, MPI_INT, i, 109, comm, &status));
419       }
420     }
421     /* check if this processor node should be in debugger */
422     PetscCall(PetscMalloc1(size, &ranks));
423     lsize = size;
424     /* Deprecated in 3.14 */
425     PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_nodes", ranks, &lsize, &flag));
426     if (flag) {
427       const char *const quietopt = "-options_suppress_deprecated_warnings";
428       char              msg[4096];
429       PetscBool         quiet = PETSC_FALSE;
430 
431       PetscCall(PetscOptionsGetBool(NULL, NULL, quietopt, &quiet, NULL));
432       if (!quiet) {
433         PetscCall(PetscStrncpy(msg, "** PETSc DEPRECATION WARNING ** : the option ", sizeof(msg)));
434         PetscCall(PetscStrlcat(msg, "-debugger_nodes", sizeof(msg)));
435         PetscCall(PetscStrlcat(msg, " is deprecated as of version ", sizeof(msg)));
436         PetscCall(PetscStrlcat(msg, "3.14", sizeof(msg)));
437         PetscCall(PetscStrlcat(msg, " and will be removed in a future release.", sizeof(msg)));
438         PetscCall(PetscStrlcat(msg, " Please use the option ", sizeof(msg)));
439         PetscCall(PetscStrlcat(msg, "-debugger_ranks", sizeof(msg)));
440         PetscCall(PetscStrlcat(msg, " instead.", sizeof(msg)));
441         PetscCall(PetscStrlcat(msg, " (Silence this warning with ", sizeof(msg)));
442         PetscCall(PetscStrlcat(msg, quietopt, sizeof(msg)));
443         PetscCall(PetscStrlcat(msg, ")\n", sizeof(msg)));
444         PetscCall(PetscPrintf(comm, "%s", msg));
445       }
446     } else {
447       lsize = size;
448       PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_ranks", ranks, &lsize, &flag));
449     }
450     if (flag) {
451       for (i = 0; i < lsize; i++) {
452         if (ranks[i] == rank) {
453           flag = PETSC_FALSE;
454           break;
455         }
456       }
457     }
458     if (!flag) {
459       PetscCall(PetscSetDebuggerFromString(string));
460       PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
461       if (flg1) {
462         PetscCall(PetscAttachDebugger());
463       } else {
464         PetscCall(PetscStopForDebugger());
465       }
466       PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_AbortOnError, &err_handler));
467       PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
468     } else {
469       PetscCall(PetscWaitOnError());
470     }
471     PetscCall(PetscFree(ranks));
472   }
473 
474   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_emacs", emacsmachinename, sizeof(emacsmachinename), &flg1));
475   if (flg1 && rank == 0) PetscCall(PetscPushErrorHandler(PetscEmacsClientErrorHandler, emacsmachinename));
476 
477   /*
478         Setup profiling and logging
479   */
480   if (PetscDefined(USE_LOG)) { PetscCall(PetscInfoSetFromOptions(NULL)); }
481   PetscCall(PetscDetermineInitialFPTrap());
482   flg1 = PETSC_FALSE;
483   PetscCall(PetscOptionsGetBool(NULL, NULL, "-fp_trap", &flg1, &flag));
484   if (flag) PetscCall(PetscSetFPTrap(flg1 ? PETSC_FP_TRAP_ON : PETSC_FP_TRAP_OFF));
485   PetscCall(PetscOptionsGetInt(NULL, NULL, "-check_pointer_intensity", &intensity, &flag));
486   if (flag) PetscCall(PetscCheckPointerSetIntensity(intensity));
487   if (PetscDefined(USE_LOG)) {
488     char              mname[PETSC_MAX_PATH_LEN];
489     PetscInt          n_max = PETSC_LOG_VIEW_FROM_OPTIONS_MAX;
490     PetscViewerFormat format[PETSC_LOG_VIEW_FROM_OPTIONS_MAX];
491     PetscBool         ci_log = PetscCIEnabled;
492 
493     mname[0] = 0;
494     PetscCall(PetscOptionsGetString(NULL, NULL, "-history", mname, sizeof(mname), &flg1));
495     if (flg1) {
496       if (mname[0]) {
497         PetscCall(PetscOpenHistoryFile(mname, &petsc_history));
498       } else {
499         PetscCall(PetscOpenHistoryFile(NULL, &petsc_history));
500       }
501     }
502 
503     if (ci_log) {
504       static const char *LogOptions[] = {"-log_view", "-log_mpe", "-log_perfstubs", "-log_nvtx", "-log", "-log_all"};
505 
506       for (size_t i = 0; i < PETSC_STATIC_ARRAY_LENGTH(LogOptions); i++) {
507         PetscCall(PetscOptionsHasName(NULL, NULL, LogOptions[i], &flg1));
508         if (flg1) {
509           ci_log = PETSC_FALSE;
510           break;
511         }
512       }
513     }
514     if (ci_log) PetscLogSyncOn = PETSC_TRUE;
515     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_sync", &PetscLogSyncOn, NULL));
516 
517     if (PetscDefined(HAVE_MPE)) {
518       flg1 = PETSC_FALSE;
519       PetscCall(PetscOptionsHasName(NULL, NULL, "-log_mpe", &flg1));
520       if (flg1) PetscCall(PetscLogMPEBegin());
521     }
522     if (PetscDefined(HAVE_TAU_PERFSTUBS)) {
523       char     *tau_exec_path       = getenv("TAU_EXEC_PATH");
524       PetscBool start_log_perfstubs = (tau_exec_path != NULL) ? PETSC_TRUE : PETSC_FALSE;
525 
526       if (tau_exec_path && !PetscGlobalRank) PetscCall(PetscInfo(NULL, "Detected tau_exec path %s\n", tau_exec_path));
527       PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_perfstubs", &start_log_perfstubs, NULL));
528       if (start_log_perfstubs) PetscCall(PetscLogPerfstubsBegin());
529     }
530     if (PetscDefined(USE_LOG) && PetscDefined(HAVE_CUDA)) {
531       char     *nsys_profiling_session_id = getenv("NSYS_PROFILING_SESSION_ID");
532       char     *nvprof_id                 = getenv("NVPROF_ID");
533       PetscBool start_log_nvtx            = ((nsys_profiling_session_id != NULL) || (nvprof_id != NULL)) ? PETSC_TRUE : PETSC_FALSE;
534 
535       if (nsys_profiling_session_id && !PetscGlobalRank) PetscCall(PetscInfo(NULL, "Detected nsys profiling session id %s\n", nsys_profiling_session_id));
536       if (nvprof_id && !PetscGlobalRank) PetscCall(PetscInfo(NULL, "Detected nvprof session id %s\n", nvprof_id));
537       PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_nvtx", &start_log_nvtx, NULL));
538       if (start_log_nvtx) PetscCall(PetscLogTypeBegin(PETSCLOGHANDLERNVTX));
539     }
540     flg1 = PETSC_FALSE;
541     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_all", &flg1, NULL));
542     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log", &flg2, NULL));
543     if (flg1 || flg2 || ci_log) PetscCall(PetscLogDefaultBegin());
544 
545     PetscCall(PetscOptionsGetString(NULL, NULL, "-log_trace", mname, sizeof(mname), &flg1));
546     if (flg1) {
547       char  name[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN];
548       FILE *file;
549       if (mname[0]) {
550         PetscCall(PetscSNPrintf(name, PETSC_MAX_PATH_LEN, "%s.%d", mname, rank));
551         PetscCall(PetscFixFilename(name, fname));
552         file = fopen(fname, "w");
553         PetscCheck(file, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to open trace file: %s", fname);
554       } else file = PETSC_STDOUT;
555       PetscCall(PetscLogTraceBegin(file));
556     }
557 
558     PetscCall(PetscOptionsCreateViewers(comm, NULL, NULL, "-log_view", &n_max, NULL, format, NULL));
559     if (n_max > 0) {
560       PetscBool any_nested  = PETSC_FALSE;
561       PetscBool any_default = PETSC_FALSE;
562 
563       for (PetscInt i = 0; i < n_max; i++) {
564         if (format[i] == PETSC_VIEWER_ASCII_XML || format[i] == PETSC_VIEWER_ASCII_FLAMEGRAPH) {
565           any_nested = PETSC_TRUE;
566         } else {
567           any_default = PETSC_TRUE;
568         }
569       }
570       if (any_default) { PetscCall(PetscLogDefaultBegin()); }
571       if (any_nested) {
572         PetscCall(PetscLogNestedBegin());
573         PetscReal threshold = PetscRealConstant(0.01);
574         PetscCall(PetscOptionsGetReal(NULL, NULL, "-log_threshold", &threshold, &flg1));
575         if (flg1) PetscCall(PetscLogSetThreshold((PetscLogDouble)threshold, NULL));
576       }
577     }
578   }
579 
580   PetscCall(PetscOptionsGetBool(NULL, NULL, "-saws_options", &PetscOptionsPublish, NULL));
581   PetscCall(PetscOptionsGetBool(NULL, NULL, "-use_gpu_aware_mpi", &use_gpu_aware_mpi, &flg1));
582   if (!flg1) PetscCall(PetscOptionsGetBool(NULL, NULL, "-sf_use_gpu_aware_mpi", &use_gpu_aware_mpi, &flg1)); // an alias option
583 
584   /*
585        Print basic help message
586   */
587   if (hasHelp) {
588     PetscCall((*PetscHelpPrintf)(comm, "Options for all PETSc programs:\n"));
589     PetscCall((*PetscHelpPrintf)(comm, " -version: prints PETSc version\n"));
590     PetscCall((*PetscHelpPrintf)(comm, " -help intro: prints example description and PETSc version, and exits\n"));
591     PetscCall((*PetscHelpPrintf)(comm, " -help: prints example description, PETSc version, and available options for used routines\n"));
592     PetscCall((*PetscHelpPrintf)(comm, " -on_error_abort: cause an abort when an error is detected. Useful \n "));
593     PetscCall((*PetscHelpPrintf)(comm, "       only when run in the debugger\n"));
594     PetscCall((*PetscHelpPrintf)(comm, " -on_error_attach_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
595     PetscCall((*PetscHelpPrintf)(comm, "       start the debugger in new xterm\n"));
596     PetscCall((*PetscHelpPrintf)(comm, "       unless noxterm is given\n"));
597     PetscCall((*PetscHelpPrintf)(comm, " -start_in_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
598     PetscCall((*PetscHelpPrintf)(comm, "       start all processes in the debugger\n"));
599     PetscCall((*PetscHelpPrintf)(comm, " -on_error_emacs <machinename>\n"));
600     PetscCall((*PetscHelpPrintf)(comm, "    emacs jumps to error file\n"));
601     PetscCall((*PetscHelpPrintf)(comm, " -debugger_ranks [n1,n2,..] Ranks to start in debugger\n"));
602     PetscCall((*PetscHelpPrintf)(comm, " -debugger_pause [m] : delay (in seconds) to attach debugger\n"));
603     PetscCall((*PetscHelpPrintf)(comm, " -stop_for_debugger : prints message on how to attach debugger manually\n"));
604     PetscCall((*PetscHelpPrintf)(comm, "                      waits the delay for you to attach\n"));
605     PetscCall((*PetscHelpPrintf)(comm, " -display display: Location where X window graphics and debuggers are displayed\n"));
606     PetscCall((*PetscHelpPrintf)(comm, " -no_signal_handler: do not trap error signals\n"));
607     PetscCall((*PetscHelpPrintf)(comm, " -mpi_return_on_error: MPI returns error code, rather than abort on internal error\n"));
608     PetscCall((*PetscHelpPrintf)(comm, " -fp_trap: stop on floating point exceptions\n"));
609     PetscCall((*PetscHelpPrintf)(comm, "           note on IBM RS6000 this slows run greatly\n"));
610     PetscCall((*PetscHelpPrintf)(comm, " -malloc_dump <optional filename>: dump list of unfreed memory at conclusion\n"));
611     PetscCall((*PetscHelpPrintf)(comm, " -on_error_malloc_dump <optional filename>: dump list of unfreed memory on memory error\n"));
612     PetscCall((*PetscHelpPrintf)(comm, " -malloc_view <optional filename>: keeps log of all memory allocations, displays in PetscFinalize()\n"));
613     PetscCall((*PetscHelpPrintf)(comm, " -malloc_debug <true or false>: enables or disables extended checking for memory corruption\n"));
614     PetscCall((*PetscHelpPrintf)(comm, " -options_view: dump list of options inputted\n"));
615     PetscCall((*PetscHelpPrintf)(comm, " -options_left: dump list of unused options\n"));
616     PetscCall((*PetscHelpPrintf)(comm, " -options_left no: don't dump list of unused options\n"));
617     PetscCall((*PetscHelpPrintf)(comm, " -tmp tmpdir: alternative /tmp directory\n"));
618     PetscCall((*PetscHelpPrintf)(comm, " -shared_tmp: tmp directory is shared by all processors\n"));
619     PetscCall((*PetscHelpPrintf)(comm, " -not_shared_tmp: each processor has separate tmp directory\n"));
620     PetscCall((*PetscHelpPrintf)(comm, " -memory_view: print memory usage at end of run\n"));
621 #if defined(PETSC_USE_LOG)
622     PetscCall((*PetscHelpPrintf)(comm, " -get_total_flops: total flops over all processors\n"));
623     PetscCall((*PetscHelpPrintf)(comm, " -log_view [:filename:[format]]: logging objects and events\n"));
624     PetscCall((*PetscHelpPrintf)(comm, " -log_trace [filename]: prints trace of all PETSc calls\n"));
625     PetscCall((*PetscHelpPrintf)(comm, " -log_exclude <list,of,classnames>: exclude given classes from logging\n"));
626   #if defined(PETSC_HAVE_DEVICE)
627     PetscCall((*PetscHelpPrintf)(comm, " -log_view_gpu_time: log the GPU time for each and event\n"));
628   #endif
629   #if defined(PETSC_HAVE_MPE)
630     PetscCall((*PetscHelpPrintf)(comm, " -log_mpe: Also create logfile viewable through Jumpshot\n"));
631   #endif
632   #if PetscDefined(HAVE_CUDA)
633     PetscCall((*PetscHelpPrintf)(comm, " -log_nvtx: Create nvtx event ranges for Nsight\n"));
634   #endif
635 #endif
636 #if defined(PETSC_USE_INFO)
637     PetscCall((*PetscHelpPrintf)(comm, " -info [filename][:[~]<list,of,classnames>[:[~]self]]: print verbose information\n"));
638 #endif
639     PetscCall((*PetscHelpPrintf)(comm, " -options_file <file>: reads options from file\n"));
640     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor: monitor options to standard output, including that set previously e.g. in option files\n"));
641     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor_cancel: cancels all hardwired option monitors\n"));
642     PetscCall((*PetscHelpPrintf)(comm, " -petsc_sleep n: sleeps n seconds before running program\n"));
643   }
644 
645 #if defined(PETSC_HAVE_POPEN)
646   {
647     char machine[128];
648     PetscCall(PetscOptionsGetString(NULL, NULL, "-popen_machine", machine, sizeof(machine), &flg1));
649     if (flg1) PetscCall(PetscPOpenSetMachine(machine));
650   }
651 #endif
652 
653   PetscCall(PetscOptionsGetReal(NULL, NULL, "-petsc_sleep", &si, &flg1));
654   if (flg1) PetscCall(PetscSleep(si));
655   PetscFunctionReturn(PETSC_SUCCESS);
656 }
657