xref: /petsc/src/sys/objects/init.c (revision e6994092c169409fd2214bddd7e38ced794e3cea)
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   #if defined(PETSC_COMPLEX_INSTANTIATE)
43 template <>
44 class std::complex<double>; /* instantiate complex template class */
45   #endif
46 
47 /*MC
48    PETSC_i - the imaginary number i
49 
50    Synopsis:
51    #include <petscsys.h>
52    PetscComplex PETSC_i;
53 
54    Level: beginner
55 
56    Note:
57    Complex numbers are automatically available if PETSc located a working complex implementation
58 
59 .seealso: `PetscRealPart()`, `PetscImaginaryPart()`, `PetscRealPartComplex()`, `PetscImaginaryPartComplex()`
60 M*/
61 PetscComplex PETSC_i;
62 MPI_Datatype MPIU___COMPLEX128 = 0;
63 #endif /* PETSC_HAVE_COMPLEX */
64 #if defined(PETSC_HAVE_REAL___FLOAT128)
65 MPI_Datatype MPIU___FLOAT128 = 0;
66 #endif
67 #if defined(PETSC_HAVE_REAL___FP16)
68 MPI_Datatype MPIU___FP16 = 0;
69 #endif
70 MPI_Datatype MPIU_2SCALAR    = 0;
71 MPI_Datatype MPIU_REAL_INT   = 0;
72 MPI_Datatype MPIU_SCALAR_INT = 0;
73 #if defined(PETSC_USE_64BIT_INDICES)
74 MPI_Datatype MPIU_2INT       = 0;
75 MPI_Datatype MPIU_INT_MPIINT = 0;
76 #endif
77 MPI_Datatype MPI_4INT  = 0;
78 MPI_Datatype MPIU_4INT = 0;
79 MPI_Datatype MPIU_BOOL;
80 MPI_Datatype MPIU_ENUM;
81 MPI_Datatype MPIU_FORTRANADDR;
82 MPI_Datatype MPIU_SIZE_T;
83 
84 /*
85        Function that is called to display all error messages
86 */
87 PetscErrorCode (*PetscErrorPrintf)(const char[], ...)          = PetscErrorPrintfDefault;
88 PetscErrorCode (*PetscHelpPrintf)(MPI_Comm, const char[], ...) = PetscHelpPrintfDefault;
89 PetscErrorCode (*PetscVFPrintf)(FILE *, const char[], va_list) = PetscVFPrintfDefault;
90 
91 /*
92    Optional file where all PETSc output from various prints is saved
93 */
94 PETSC_INTERN FILE *petsc_history;
95 FILE              *petsc_history = NULL;
96 
97 static PetscErrorCode PetscOpenHistoryFile(const char filename[], FILE **fd)
98 {
99   PetscMPIInt rank, size;
100   char        pfile[PETSC_MAX_PATH_LEN], pname[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN], date[64];
101   char        version[256];
102 
103   PetscFunctionBegin;
104   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
105   if (rank == 0) {
106     char arch[10];
107 
108     PetscCall(PetscGetArchType(arch, 10));
109     PetscCall(PetscGetDate(date, 64));
110     PetscCall(PetscGetVersion(version, 256));
111     PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
112     if (filename) {
113       PetscCall(PetscFixFilename(filename, fname));
114     } else {
115       PetscCall(PetscGetHomeDirectory(pfile, sizeof(pfile)));
116       PetscCall(PetscStrlcat(pfile, "/.petschistory", sizeof(pfile)));
117       PetscCall(PetscFixFilename(pfile, fname));
118     }
119 
120     *fd = fopen(fname, "a");
121     PetscCheck(fd, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Cannot open file: %s", fname);
122 
123     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
124     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s %s\n", version, date));
125     PetscCall(PetscGetProgramName(pname, sizeof(pname)));
126     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "%s on a %s, %d proc. with options:\n", pname, arch, size));
127     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
128 
129     PetscCall(PetscFFlush(*fd));
130   }
131   PetscFunctionReturn(PETSC_SUCCESS);
132 }
133 
134 PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE **fd)
135 {
136   PetscMPIInt rank;
137 
138   PetscFunctionBegin;
139   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
140   if (rank == 0) {
141     char date[64];
142     int  err;
143 
144     PetscCall(PetscGetDate(date, sizeof(date)));
145     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
146     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "Finished at %s\n", date));
147     PetscCall(PetscFPrintf(PETSC_COMM_SELF, *fd, "----------------------------------------\n"));
148     PetscCall(PetscFFlush(*fd));
149     err = fclose(*fd);
150     PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_SYS, "fclose() failed on file");
151   }
152   PetscFunctionReturn(PETSC_SUCCESS);
153 }
154 
155 /*
156    This is ugly and probably belongs somewhere else, but I want to
157   be able to put a true MPI abort error handler with command line args.
158 
159     This is so MPI errors in the debugger will leave all the stack
160   frames. The default MP_Abort() cleans up and exits thus providing no useful information
161   in the debugger hence we call abort() instead of MPI_Abort().
162 */
163 
164 static void Petsc_MPI_AbortOnError(PETSC_UNUSED MPI_Comm *comm, PetscMPIInt *flag, ...)
165 {
166   PetscFunctionBegin;
167   PetscCallContinue((*PetscErrorPrintf)("MPI error %d\n", *flag));
168   abort();
169 }
170 
171 static void Petsc_MPI_DebuggerOnError(MPI_Comm *comm, PetscMPIInt *flag, ...)
172 {
173   PetscFunctionBegin;
174   PetscCallContinue((*PetscErrorPrintf)("MPI error %d\n", *flag));
175   if (PetscAttachDebugger()) PETSCABORT(*comm, (PetscErrorCode)*flag); /* hopeless so get out */
176 }
177 
178 /*@
179   PetscEnd - Calls `PetscFinalize()` and then ends the program. This is useful if one
180   wishes a clean exit somewhere deep in the program.
181 
182   Collective on `PETSC_COMM_WORLD`
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 #include <petscviewer.h>
208 
209 /*@C
210   PetscSetHelpVersionFunctions - Sets functions that print help and version information
211   before the PETSc help and version information is printed.
212 
213   No Fortran Support
214 
215   Input Parameters:
216 + help    - the help function (may be `NULL`)
217 - version - the version function (may be `NULL`)
218 
219   Level: developer
220 
221   Notes:
222   Must call BEFORE `PetscInitialize()`.
223 
224   This routine enables a "higher-level" package that uses PETSc to print its messages first and
225   control how the PETSc help messages are printed.
226 
227 .seealso: `PetscInitialize()`
228 @*/
229 PetscErrorCode PetscSetHelpVersionFunctions(PetscErrorCode (*help)(MPI_Comm), PetscErrorCode (*version)(MPI_Comm))
230 {
231   PetscFunctionBegin;
232   PetscExternalHelpFunction    = help;
233   PetscExternalVersionFunction = version;
234   PetscFunctionReturn(PETSC_SUCCESS);
235 }
236 
237 PETSC_INTERN PetscBool PetscObjectsLog;
238 
239 PETSC_INTERN PetscErrorCode PetscOptionsCheckInitial_Private(const char help[])
240 {
241   char        string[64];
242   MPI_Comm    comm = PETSC_COMM_WORLD;
243   PetscBool   flg1 = PETSC_FALSE, flg2 = PETSC_FALSE, flag, hasHelp;
244   PetscBool   checkstack = PETSC_FALSE;
245   PetscReal   si;
246   PetscInt    intensity;
247   int         i;
248   PetscMPIInt rank;
249   char        version[256];
250 
251   PetscFunctionBegin;
252   PetscCallMPI(MPI_Comm_rank(comm, &rank));
253 
254   if (PetscDefined(USE_DEBUG) && !PetscDefined(HAVE_THREADSAFETY)) checkstack = PETSC_TRUE;
255   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkstack", &checkstack, NULL));
256   PetscCall(PetscStackSetCheck(checkstack));
257 
258   PetscCall(PetscOptionsGetBool(NULL, NULL, "-checkfunctionlist", &PetscPrintFunctionList, NULL));
259 
260 #if !defined(PETSC_HAVE_THREADSAFETY)
261   if (!(PETSC_RUNNING_ON_VALGRIND)) {
262     /*
263       Setup the memory management; support for tracing malloc() usage
264     */
265     PetscBool mdebug = PETSC_FALSE, eachcall = PETSC_FALSE, initializenan = PETSC_FALSE, mlog = PETSC_FALSE;
266     PetscBool flg3 = PETSC_FALSE;
267 
268     if (PetscDefined(USE_DEBUG)) {
269       mdebug        = PETSC_TRUE;
270       initializenan = PETSC_TRUE;
271       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
272     } else {
273       /* don't warn about unused option */
274       PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_test", &flg1));
275       flg1 = PETSC_FALSE;
276     }
277     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_debug", &flg2, &flg3));
278     if (flg1 || flg2) {
279       mdebug        = PETSC_TRUE;
280       eachcall      = PETSC_TRUE;
281       initializenan = PETSC_TRUE;
282     } else if (flg3 && !flg2) {
283       mdebug        = PETSC_FALSE;
284       eachcall      = PETSC_FALSE;
285       initializenan = PETSC_FALSE;
286     }
287 
288     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_requested_size", &flg1, &flg2));
289     if (flg2) PetscCall(PetscMallocLogRequestedSizeSet(flg1));
290 
291     PetscCall(PetscOptionsHasName(NULL, NULL, "-malloc_view", &mlog));
292     if (mlog) mdebug = PETSC_TRUE;
293     /* the next line is deprecated */
294     PetscCall(PetscOptionsGetBool(NULL, NULL, "-malloc_dump", &mdebug, NULL));
295     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &mdebug, NULL));
296     if (mdebug) PetscCall(PetscMallocSetDebug(eachcall, initializenan));
297     if (mlog) {
298       PetscReal logthreshold = 0;
299       PetscCall(PetscOptionsGetReal(NULL, NULL, "-malloc_view_threshold", &logthreshold, NULL));
300       PetscCall(PetscMallocViewSet(logthreshold));
301     }
302     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_view_memory", &PetscLogMemory, NULL));
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, "-memory_view", &flg1, NULL));
314   if (flg1) PetscCall(PetscMemorySetGetMaximumUsage());
315 #endif
316 
317   PetscCall(PetscOptionsHasName(NULL, NULL, "-objects_dump", &PetscObjectsLog));
318 
319   /*
320       Set the display variable for graphics
321   */
322   PetscCall(PetscSetDisplay());
323 
324   /*
325      Print main application help message
326   */
327   PetscCall(PetscOptionsHasHelp(NULL, &hasHelp));
328   if (help && hasHelp) {
329     PetscCall(PetscPrintf(comm, "%s", help));
330     PetscCall(PetscPrintf(comm, "----------------------------------------\n"));
331   }
332 
333   /*
334       Print the PETSc version information
335   */
336   PetscCall(PetscOptionsHasName(NULL, NULL, "-version", &flg1));
337   if (flg1 || hasHelp) {
338     /*
339        Print "higher-level" package version message
340     */
341     if (PetscExternalVersionFunction) PetscCall((*PetscExternalVersionFunction)(comm));
342 
343     PetscCall(PetscGetVersion(version, 256));
344     if (!PetscCIEnabledPortableErrorOutput) PetscCall((*PetscHelpPrintf)(comm, "%s\n", version));
345     PetscCall((*PetscHelpPrintf)(comm, "%s", PETSC_AUTHOR_INFO));
346     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/changes for recent updates.\n"));
347     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/faq for problems.\n"));
348     PetscCall((*PetscHelpPrintf)(comm, "See https://petsc.org/release/manualpages for help.\n"));
349     if (!PetscCIEnabledPortableErrorOutput) PetscCall((*PetscHelpPrintf)(comm, "Libraries linked from %s\n", PETSC_LIB_DIR));
350     PetscCall((*PetscHelpPrintf)(comm, "----------------------------------------\n"));
351   }
352 
353   /*
354        Print "higher-level" package help message
355   */
356   if (hasHelp) {
357     PetscBool hasHelpIntro;
358 
359     if (PetscExternalHelpFunction) PetscCall((*PetscExternalHelpFunction)(comm));
360     PetscCall(PetscOptionsHasHelpIntro_Internal(NULL, &hasHelpIntro));
361     if (hasHelpIntro) {
362       PetscCall(PetscOptionsDestroyDefault());
363       PetscCall(PetscFreeMPIResources());
364       PetscCallMPI(MPI_Finalize());
365       exit(0);
366     }
367   }
368 
369   /*
370       Setup the error handling
371   */
372   flg1 = PETSC_FALSE;
373   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_abort", &flg1, NULL));
374   if (flg1) {
375     PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_ARE_FATAL));
376     PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
377   }
378   flg1 = PETSC_FALSE;
379   PetscCall(PetscOptionsGetBool(NULL, NULL, "-on_error_mpiabort", &flg1, NULL));
380   if (flg1) PetscCall(PetscPushErrorHandler(PetscMPIAbortErrorHandler, NULL));
381   flg1 = PETSC_FALSE;
382   PetscCall(PetscOptionsGetBool(NULL, NULL, "-mpi_return_on_error", &flg1, NULL));
383   if (flg1) PetscCallMPI(MPI_Comm_set_errhandler(comm, MPI_ERRORS_RETURN));
384   flg1 = PETSC_FALSE;
385   PetscCall(PetscOptionsGetBool(NULL, NULL, "-no_signal_handler", &flg1, NULL));
386   if (!flg1) PetscCall(PetscPushSignalHandler(PetscSignalHandlerDefault, NULL));
387 
388   /*
389       Setup debugger information
390   */
391   PetscCall(PetscSetDefaultDebugger());
392   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_attach_debugger", string, sizeof(string), &flg1));
393   if (flg1) {
394     MPI_Errhandler err_handler;
395 
396     PetscCall(PetscSetDebuggerFromString(string));
397     PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_DebuggerOnError, &err_handler));
398     PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
399     PetscCall(PetscPushErrorHandler(PetscAttachDebuggerErrorHandler, NULL));
400   }
401   PetscCall(PetscOptionsGetString(NULL, NULL, "-debug_terminal", string, sizeof(string), &flg1));
402   if (flg1) PetscCall(PetscSetDebugTerminal(string));
403   PetscCall(PetscOptionsGetString(NULL, NULL, "-start_in_debugger", string, sizeof(string), &flg1));
404   PetscCall(PetscOptionsGetString(NULL, NULL, "-stop_for_debugger", string, sizeof(string), &flg2));
405   if (flg1 || flg2) {
406     PetscMPIInt    size;
407     PetscInt       lsize, *ranks;
408     MPI_Errhandler err_handler;
409     /*
410        we have to make sure that all processors have opened
411        connections to all other processors, otherwise once the
412        debugger has stated it is likely to receive a SIGUSR1
413        and kill the program.
414     */
415     PetscCallMPI(MPI_Comm_size(comm, &size));
416     if (size > 2) {
417       PetscMPIInt dummy = 0;
418       MPI_Status  status;
419       for (i = 0; i < size; i++) {
420         if (rank != i) PetscCallMPI(MPI_Send(&dummy, 1, MPI_INT, i, 109, comm));
421       }
422       for (i = 0; i < size; i++) {
423         if (rank != i) PetscCallMPI(MPI_Recv(&dummy, 1, MPI_INT, i, 109, comm, &status));
424       }
425     }
426     /* check if this processor node should be in debugger */
427     PetscCall(PetscMalloc1(size, &ranks));
428     lsize = size;
429     /* Deprecated in 3.14 */
430     PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_nodes", ranks, &lsize, &flag));
431     if (flag) {
432       const char *const quietopt = "-options_suppress_deprecated_warnings";
433       char              msg[4096];
434       PetscBool         quiet = PETSC_FALSE;
435 
436       PetscCall(PetscOptionsGetBool(NULL, NULL, quietopt, &quiet, NULL));
437       if (!quiet) {
438         PetscCall(PetscStrncpy(msg, "** PETSc DEPRECATION WARNING ** : the option ", sizeof(msg)));
439         PetscCall(PetscStrlcat(msg, "-debugger_nodes", sizeof(msg)));
440         PetscCall(PetscStrlcat(msg, " is deprecated as of version ", sizeof(msg)));
441         PetscCall(PetscStrlcat(msg, "3.14", sizeof(msg)));
442         PetscCall(PetscStrlcat(msg, " and will be removed in a future release.", sizeof(msg)));
443         PetscCall(PetscStrlcat(msg, " Please use the option ", sizeof(msg)));
444         PetscCall(PetscStrlcat(msg, "-debugger_ranks", sizeof(msg)));
445         PetscCall(PetscStrlcat(msg, " instead.", sizeof(msg)));
446         PetscCall(PetscStrlcat(msg, " (Silence this warning with ", sizeof(msg)));
447         PetscCall(PetscStrlcat(msg, quietopt, sizeof(msg)));
448         PetscCall(PetscStrlcat(msg, ")\n", sizeof(msg)));
449         PetscCall(PetscPrintf(comm, "%s", msg));
450       }
451     } else {
452       lsize = size;
453       PetscCall(PetscOptionsGetIntArray(NULL, NULL, "-debugger_ranks", ranks, &lsize, &flag));
454     }
455     if (flag) {
456       for (i = 0; i < lsize; i++) {
457         if (ranks[i] == rank) {
458           flag = PETSC_FALSE;
459           break;
460         }
461       }
462     }
463     if (!flag) {
464       PetscCall(PetscSetDebuggerFromString(string));
465       PetscCall(PetscPushErrorHandler(PetscAbortErrorHandler, NULL));
466       if (flg1) {
467         PetscCall(PetscAttachDebugger());
468       } else {
469         PetscCall(PetscStopForDebugger());
470       }
471       PetscCallMPI(MPI_Comm_create_errhandler(Petsc_MPI_AbortOnError, &err_handler));
472       PetscCallMPI(MPI_Comm_set_errhandler(comm, err_handler));
473     } else {
474       PetscCall(PetscWaitOnError());
475     }
476     PetscCall(PetscFree(ranks));
477   }
478 
479   PetscCall(PetscOptionsGetString(NULL, NULL, "-on_error_emacs", emacsmachinename, sizeof(emacsmachinename), &flg1));
480   if (flg1 && rank == 0) PetscCall(PetscPushErrorHandler(PetscEmacsClientErrorHandler, emacsmachinename));
481 
482   /*
483         Setup profiling and logging
484   */
485   if (PetscDefined(USE_LOG)) { PetscCall(PetscInfoSetFromOptions(NULL)); }
486   PetscCall(PetscDetermineInitialFPTrap());
487   flg1 = PETSC_FALSE;
488   PetscCall(PetscOptionsGetBool(NULL, NULL, "-fp_trap", &flg1, &flag));
489   if (flag) PetscCall(PetscSetFPTrap(flg1 ? PETSC_FP_TRAP_ON : PETSC_FP_TRAP_OFF));
490   PetscCall(PetscOptionsGetInt(NULL, NULL, "-check_pointer_intensity", &intensity, &flag));
491   if (flag) PetscCall(PetscCheckPointerSetIntensity(intensity));
492   if (PetscDefined(USE_LOG)) {
493     char              mname[PETSC_MAX_PATH_LEN];
494     PetscInt          n_max = PETSC_LOG_VIEW_FROM_OPTIONS_MAX;
495     PetscViewerFormat format[PETSC_LOG_VIEW_FROM_OPTIONS_MAX];
496     PetscBool         ci_log = PetscCIEnabled;
497 
498     mname[0] = 0;
499     PetscCall(PetscOptionsGetString(NULL, NULL, "-history", mname, sizeof(mname), &flg1));
500     if (flg1) {
501       if (mname[0]) {
502         PetscCall(PetscOpenHistoryFile(mname, &petsc_history));
503       } else {
504         PetscCall(PetscOpenHistoryFile(NULL, &petsc_history));
505       }
506     }
507 
508     if (ci_log) {
509       static const char *LogOptions[] = {"-log_view", "-log_mpe", "-log_perfstubs", "-log_nvtx", "-log", "-log_all"};
510 
511       for (size_t i = 0; i < PETSC_STATIC_ARRAY_LENGTH(LogOptions); i++) {
512         PetscCall(PetscOptionsHasName(NULL, NULL, LogOptions[i], &flg1));
513         if (flg1) {
514           ci_log = PETSC_FALSE;
515           break;
516         }
517       }
518     }
519     if (ci_log) PetscLogSyncOn = PETSC_TRUE;
520     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_sync", &PetscLogSyncOn, NULL));
521 
522     if (PetscDefined(HAVE_MPE)) {
523       flg1 = PETSC_FALSE;
524       PetscCall(PetscOptionsHasName(NULL, NULL, "-log_mpe", &flg1));
525       if (flg1) PetscCall(PetscLogMPEBegin());
526     }
527     if (PetscDefined(HAVE_TAU_PERFSTUBS)) {
528       char     *tau_exec_path       = getenv("TAU_EXEC_PATH");
529       PetscBool start_log_perfstubs = (tau_exec_path != NULL) ? PETSC_TRUE : PETSC_FALSE;
530 
531       if (tau_exec_path && !PetscGlobalRank) PetscCall(PetscInfo(NULL, "Detected tau_exec path %s\n", tau_exec_path));
532       PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_perfstubs", &start_log_perfstubs, NULL));
533       if (start_log_perfstubs) PetscCall(PetscLogPerfstubsBegin());
534     }
535     if (PetscDefined(USE_LOG) && PetscDefined(HAVE_CUDA)) {
536       char     *nsys_profiling_session_id = getenv("NSYS_PROFILING_SESSION_ID");
537       char     *nvprof_id                 = getenv("NVPROF_ID");
538       PetscBool start_log_nvtx            = ((nsys_profiling_session_id != NULL) || (nvprof_id != NULL)) ? PETSC_TRUE : PETSC_FALSE;
539 
540       if (nsys_profiling_session_id && !PetscGlobalRank) PetscCall(PetscInfo(NULL, "Detected nsys profiling session id %s\n", nsys_profiling_session_id));
541       if (nvprof_id && !PetscGlobalRank) PetscCall(PetscInfo(NULL, "Detected nvprof session id %s\n", nvprof_id));
542       PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_nvtx", &start_log_nvtx, NULL));
543       if (start_log_nvtx) PetscCall(PetscLogTypeBegin(PETSCLOGHANDLERNVTX));
544     }
545     flg1 = PETSC_FALSE;
546     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log_all", &flg1, NULL));
547     PetscCall(PetscOptionsGetBool(NULL, NULL, "-log", &flg2, NULL));
548     if (flg1 || flg2 || ci_log) PetscCall(PetscLogDefaultBegin());
549 
550     PetscCall(PetscOptionsGetString(NULL, NULL, "-log_trace", mname, sizeof(mname), &flg1));
551     if (flg1) {
552       char  name[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN];
553       FILE *file;
554       if (mname[0]) {
555         PetscCall(PetscSNPrintf(name, PETSC_MAX_PATH_LEN, "%s.%d", mname, rank));
556         PetscCall(PetscFixFilename(name, fname));
557         file = fopen(fname, "w");
558         PetscCheck(file, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to open trace file: %s", fname);
559       } else file = PETSC_STDOUT;
560       PetscCall(PetscLogTraceBegin(file));
561     }
562 
563     PetscCall(PetscOptionsCreateViewers(comm, NULL, NULL, "-log_view", &n_max, NULL, format, NULL));
564     if (n_max > 0) {
565       PetscBool any_nested  = PETSC_FALSE;
566       PetscBool any_default = PETSC_FALSE;
567 
568       for (PetscInt i = 0; i < n_max; i++) {
569         if (format[i] == PETSC_VIEWER_ASCII_XML || format[i] == PETSC_VIEWER_ASCII_FLAMEGRAPH) {
570           any_nested = PETSC_TRUE;
571         } else {
572           any_default = PETSC_TRUE;
573         }
574       }
575       if (any_default) { PetscCall(PetscLogDefaultBegin()); }
576       if (any_nested) {
577         PetscCall(PetscLogNestedBegin());
578         PetscReal threshold = PetscRealConstant(0.01);
579         PetscCall(PetscOptionsGetReal(NULL, NULL, "-log_threshold", &threshold, &flg1));
580         if (flg1) PetscCall(PetscLogSetThreshold((PetscLogDouble)threshold, NULL));
581       }
582     }
583   }
584 
585   PetscCall(PetscOptionsGetBool(NULL, NULL, "-saws_options", &PetscOptionsPublish, NULL));
586   PetscCall(PetscOptionsGetBool(NULL, NULL, "-use_gpu_aware_mpi", &use_gpu_aware_mpi, &flg1));
587   if (!flg1) PetscCall(PetscOptionsGetBool(NULL, NULL, "-sf_use_gpu_aware_mpi", &use_gpu_aware_mpi, &flg1)); // an alias option
588 
589   /*
590        Print basic help message
591   */
592   if (hasHelp) {
593     PetscCall((*PetscHelpPrintf)(comm, "Options for all PETSc programs:\n"));
594     PetscCall((*PetscHelpPrintf)(comm, " -version: prints PETSc version\n"));
595     PetscCall((*PetscHelpPrintf)(comm, " -help intro: prints example description and PETSc version, and exits\n"));
596     PetscCall((*PetscHelpPrintf)(comm, " -help: prints example description, PETSc version, and available options for used routines\n"));
597     PetscCall((*PetscHelpPrintf)(comm, " -on_error_abort: cause an abort when an error is detected. Useful \n "));
598     PetscCall((*PetscHelpPrintf)(comm, "       only when run in the debugger\n"));
599     PetscCall((*PetscHelpPrintf)(comm, " -on_error_attach_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
600     PetscCall((*PetscHelpPrintf)(comm, "       start the debugger in new xterm\n"));
601     PetscCall((*PetscHelpPrintf)(comm, "       unless noxterm is given\n"));
602     PetscCall((*PetscHelpPrintf)(comm, " -start_in_debugger [gdb,dbx,xxgdb,ups,noxterm]\n"));
603     PetscCall((*PetscHelpPrintf)(comm, "       start all processes in the debugger\n"));
604     PetscCall((*PetscHelpPrintf)(comm, " -on_error_emacs <machinename>\n"));
605     PetscCall((*PetscHelpPrintf)(comm, "    emacs jumps to error file\n"));
606     PetscCall((*PetscHelpPrintf)(comm, " -debugger_ranks [n1,n2,..] Ranks to start in debugger\n"));
607     PetscCall((*PetscHelpPrintf)(comm, " -debugger_pause [m] : delay (in seconds) to attach debugger\n"));
608     PetscCall((*PetscHelpPrintf)(comm, " -stop_for_debugger : prints message on how to attach debugger manually\n"));
609     PetscCall((*PetscHelpPrintf)(comm, "                      waits the delay for you to attach\n"));
610     PetscCall((*PetscHelpPrintf)(comm, " -display display: Location where X window graphics and debuggers are displayed\n"));
611     PetscCall((*PetscHelpPrintf)(comm, " -no_signal_handler: do not trap error signals\n"));
612     PetscCall((*PetscHelpPrintf)(comm, " -mpi_return_on_error: MPI returns error code, rather than abort on internal error\n"));
613     PetscCall((*PetscHelpPrintf)(comm, " -fp_trap: stop on floating point exceptions\n"));
614     PetscCall((*PetscHelpPrintf)(comm, "           note on IBM RS6000 this slows run greatly\n"));
615     PetscCall((*PetscHelpPrintf)(comm, " -malloc_dump <optional filename>: dump list of unfreed memory at conclusion\n"));
616     PetscCall((*PetscHelpPrintf)(comm, " -on_error_malloc_dump <optional filename>: dump list of unfreed memory on memory error\n"));
617     PetscCall((*PetscHelpPrintf)(comm, " -malloc_view <optional filename>: keeps log of all memory allocations, displays in PetscFinalize()\n"));
618     PetscCall((*PetscHelpPrintf)(comm, " -malloc_debug <true or false>: enables or disables extended checking for memory corruption\n"));
619     PetscCall((*PetscHelpPrintf)(comm, " -options_view: dump list of options inputted\n"));
620     PetscCall((*PetscHelpPrintf)(comm, " -options_left: dump list of unused options\n"));
621     PetscCall((*PetscHelpPrintf)(comm, " -options_left no: don't dump list of unused options\n"));
622     PetscCall((*PetscHelpPrintf)(comm, " -tmp tmpdir: alternative /tmp directory\n"));
623     PetscCall((*PetscHelpPrintf)(comm, " -shared_tmp: tmp directory is shared by all processors\n"));
624     PetscCall((*PetscHelpPrintf)(comm, " -not_shared_tmp: each processor has separate tmp directory\n"));
625     PetscCall((*PetscHelpPrintf)(comm, " -memory_view: print memory usage at end of run\n"));
626 #if defined(PETSC_USE_LOG)
627     PetscCall((*PetscHelpPrintf)(comm, " -get_total_flops: total flops over all processors\n"));
628     PetscCall((*PetscHelpPrintf)(comm, " -log_view [:filename:[format]]: logging objects and events\n"));
629     PetscCall((*PetscHelpPrintf)(comm, " -log_trace [filename]: prints trace of all PETSc calls\n"));
630     PetscCall((*PetscHelpPrintf)(comm, " -log_exclude <list,of,classnames>: exclude given classes from logging\n"));
631   #if defined(PETSC_HAVE_DEVICE)
632     PetscCall((*PetscHelpPrintf)(comm, " -log_view_gpu_time: log the GPU time for each and event\n"));
633   #endif
634   #if defined(PETSC_HAVE_MPE)
635     PetscCall((*PetscHelpPrintf)(comm, " -log_mpe: Also create logfile viewable through Jumpshot\n"));
636   #endif
637   #if PetscDefined(HAVE_CUDA)
638     PetscCall((*PetscHelpPrintf)(comm, " -log_nvtx: Create nvtx event ranges for Nsight\n"));
639   #endif
640 #endif
641 #if defined(PETSC_USE_INFO)
642     PetscCall((*PetscHelpPrintf)(comm, " -info [filename][:[~]<list,of,classnames>[:[~]self]]: print verbose information\n"));
643 #endif
644     PetscCall((*PetscHelpPrintf)(comm, " -options_file <file>: reads options from file\n"));
645     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor: monitor options to standard output, including that set previously e.g. in option files\n"));
646     PetscCall((*PetscHelpPrintf)(comm, " -options_monitor_cancel: cancels all hardwired option monitors\n"));
647     PetscCall((*PetscHelpPrintf)(comm, " -petsc_sleep n: sleeps n seconds before running program\n"));
648   }
649 
650 #if defined(PETSC_HAVE_POPEN)
651   {
652     char machine[128];
653     PetscCall(PetscOptionsGetString(NULL, NULL, "-popen_machine", machine, sizeof(machine), &flg1));
654     if (flg1) PetscCall(PetscPOpenSetMachine(machine));
655   }
656 #endif
657 
658   PetscCall(PetscOptionsGetReal(NULL, NULL, "-petsc_sleep", &si, &flg1));
659   if (flg1) PetscCall(PetscSleep(si));
660   PetscFunctionReturn(PETSC_SUCCESS);
661 }
662