1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Augmenting PETSc profiling by add events.\n\ 3c4762a1bSJed Brown Run this program with one of the\n\ 4c4762a1bSJed Brown following options to generate logging information: -log, -log_view,\n\ 5c4762a1bSJed Brown -log_all. The PETSc routines automatically log event times and flops,\n\ 6c4762a1bSJed Brown so this monitoring is intended solely for users to employ in application\n\ 7c4762a1bSJed Brown codes.\n\n"; 8c4762a1bSJed Brown 9c4762a1bSJed Brown /*T 10c4762a1bSJed Brown Concepts: PetscLog^user-defined event profiling 11c4762a1bSJed Brown Concepts: profiling^user-defined event 12c4762a1bSJed Brown Concepts: PetscLog^activating/deactivating events for profiling 13c4762a1bSJed Brown Concepts: profiling^activating/deactivating events 14c4762a1bSJed Brown Processors: n 15c4762a1bSJed Brown T*/ 16c4762a1bSJed Brown 17c4762a1bSJed Brown /* 18c4762a1bSJed Brown Include "petscsys.h" so that we can use PETSc profiling routines. 19c4762a1bSJed Brown */ 20c4762a1bSJed Brown #include <petscsys.h> 21c4762a1bSJed Brown #include <petscviewer.h> 22c4762a1bSJed Brown 23c4762a1bSJed Brown int main(int argc,char **argv) 24c4762a1bSJed Brown { 25c4762a1bSJed Brown PetscMPIInt rank; 26c4762a1bSJed Brown int i,imax=10000,icount; 27c4762a1bSJed Brown PetscLogEvent USER_EVENT,check_USER_EVENT; 28c4762a1bSJed Brown 29*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,NULL,help)); 30c4762a1bSJed Brown 31c4762a1bSJed Brown /* 32c4762a1bSJed Brown Create a new user-defined event. 33c4762a1bSJed Brown - Note that PetscLogEventRegister() returns to the user a unique 34c4762a1bSJed Brown integer event number, which should then be used for profiling 35c4762a1bSJed Brown the event via PetscLogEventBegin() and PetscLogEventEnd(). 36c4762a1bSJed Brown - The user can also optionally log floating point operations 37c4762a1bSJed Brown with the routine PetscLogFlops(). 38c4762a1bSJed Brown */ 39*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventRegister("User event",PETSC_VIEWER_CLASSID,&USER_EVENT)); 40*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventGetId("User event",&check_USER_EVENT)); 412c71b3e2SJacob Faibussowitsch PetscCheckFalse(USER_EVENT != check_USER_EVENT,PETSC_COMM_SELF,PETSC_ERR_PLIB,"Event Ids do not match"); 42c4762a1bSJed Brown 43*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventBegin(USER_EVENT,0,0,0,0)); 44c4762a1bSJed Brown icount = 0; 45c4762a1bSJed Brown for (i=0; i<imax; i++) icount++; 46*9566063dSJacob Faibussowitsch PetscCall(PetscLogFlops(imax)); 47*9566063dSJacob Faibussowitsch PetscCall(PetscSleep(0.5)); 48*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventEnd(USER_EVENT,0,0,0,0)); 49c4762a1bSJed Brown 50c4762a1bSJed Brown /* 51c4762a1bSJed Brown We disable the logging of an event. 52c4762a1bSJed Brown 53c4762a1bSJed Brown */ 54*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventDeactivate(USER_EVENT)); 55*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventBegin(USER_EVENT,0,0,0,0)); 56*9566063dSJacob Faibussowitsch PetscCall(PetscSleep(0.5)); 57*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventEnd(USER_EVENT,0,0,0,0)); 58c4762a1bSJed Brown 59c4762a1bSJed Brown /* 60c4762a1bSJed Brown We next enable the logging of an event 61c4762a1bSJed Brown */ 62*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventActivate(USER_EVENT)); 63*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventBegin(USER_EVENT,0,0,0,0)); 64*9566063dSJacob Faibussowitsch PetscCall(PetscSleep(0.5)); 65*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventEnd(USER_EVENT,0,0,0,0)); 66c4762a1bSJed Brown 67c4762a1bSJed Brown /* 68c4762a1bSJed Brown We test event logging imbalance 69c4762a1bSJed Brown */ 70*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 71*9566063dSJacob Faibussowitsch if (rank == 0) PetscCall(PetscSleep(0.5)); 72*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventSync(USER_EVENT,PETSC_COMM_WORLD)); 73*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventBegin(USER_EVENT,0,0,0,0)); 74*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Barrier(PETSC_COMM_WORLD)); 75*9566063dSJacob Faibussowitsch PetscCall(PetscSleep(0.5)); 76*9566063dSJacob Faibussowitsch PetscCall(PetscLogEventEnd(USER_EVENT,0,0,0,0)); 77c4762a1bSJed Brown 78*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 79b122ec5aSJacob Faibussowitsch return 0; 80c4762a1bSJed Brown } 81c4762a1bSJed Brown 82c4762a1bSJed Brown /*TEST 83c4762a1bSJed Brown 84c4762a1bSJed Brown build: 85dfd57a17SPierre Jolivet requires: defined(PETSC_USE_LOG) 86c4762a1bSJed Brown 87c4762a1bSJed Brown test: 88c4762a1bSJed Brown 89c4762a1bSJed Brown TEST*/ 90