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 PetscErrorCode ierr; 26c4762a1bSJed Brown PetscMPIInt rank; 27c4762a1bSJed Brown int i,imax=10000,icount; 28c4762a1bSJed Brown PetscLogEvent USER_EVENT,check_USER_EVENT; 29c4762a1bSJed Brown 30c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr; 31c4762a1bSJed Brown 32c4762a1bSJed Brown /* 33c4762a1bSJed Brown Create a new user-defined event. 34c4762a1bSJed Brown - Note that PetscLogEventRegister() returns to the user a unique 35c4762a1bSJed Brown integer event number, which should then be used for profiling 36c4762a1bSJed Brown the event via PetscLogEventBegin() and PetscLogEventEnd(). 37c4762a1bSJed Brown - The user can also optionally log floating point operations 38c4762a1bSJed Brown with the routine PetscLogFlops(). 39c4762a1bSJed Brown */ 40c4762a1bSJed Brown ierr = PetscLogEventRegister("User event",PETSC_VIEWER_CLASSID,&USER_EVENT);CHKERRQ(ierr); 41c4762a1bSJed Brown ierr = PetscLogEventGetId("User event",&check_USER_EVENT);CHKERRQ(ierr); 42c4762a1bSJed Brown if (USER_EVENT != check_USER_EVENT) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Event Ids do not match"); 43c4762a1bSJed Brown 44c4762a1bSJed Brown ierr = PetscLogEventBegin(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 45c4762a1bSJed Brown icount = 0; 46c4762a1bSJed Brown for (i=0; i<imax; i++) icount++; 47c4762a1bSJed Brown ierr = PetscLogFlops(imax);CHKERRQ(ierr); 48c4762a1bSJed Brown ierr = PetscSleep(0.5);CHKERRQ(ierr); 49c4762a1bSJed Brown ierr = PetscLogEventEnd(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 50c4762a1bSJed Brown 51c4762a1bSJed Brown /* 52c4762a1bSJed Brown We disable the logging of an event. 53c4762a1bSJed Brown 54c4762a1bSJed Brown */ 55c4762a1bSJed Brown ierr = PetscLogEventDeactivate(USER_EVENT);CHKERRQ(ierr); 56c4762a1bSJed Brown ierr = PetscLogEventBegin(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 57c4762a1bSJed Brown ierr = PetscSleep(0.5);CHKERRQ(ierr); 58c4762a1bSJed Brown ierr = PetscLogEventEnd(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 59c4762a1bSJed Brown 60c4762a1bSJed Brown /* 61c4762a1bSJed Brown We next enable the logging of an event 62c4762a1bSJed Brown */ 63c4762a1bSJed Brown ierr = PetscLogEventActivate(USER_EVENT);CHKERRQ(ierr); 64c4762a1bSJed Brown ierr = PetscLogEventBegin(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 65c4762a1bSJed Brown ierr = PetscSleep(0.5);CHKERRQ(ierr); 66c4762a1bSJed Brown ierr = PetscLogEventEnd(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 67c4762a1bSJed Brown 68c4762a1bSJed Brown /* 69c4762a1bSJed Brown We test event logging imbalance 70c4762a1bSJed Brown */ 71ffc4695bSBarry Smith ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRMPI(ierr); 72c4762a1bSJed Brown if (!rank) {ierr = PetscSleep(0.5);CHKERRQ(ierr);} 73c4762a1bSJed Brown ierr = PetscLogEventSync(USER_EVENT,PETSC_COMM_WORLD);CHKERRQ(ierr); 74c4762a1bSJed Brown ierr = PetscLogEventBegin(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 75ffc4695bSBarry Smith ierr = MPI_Barrier(PETSC_COMM_WORLD);CHKERRMPI(ierr); 76c4762a1bSJed Brown ierr = PetscSleep(0.5);CHKERRQ(ierr); 77c4762a1bSJed Brown ierr = PetscLogEventEnd(USER_EVENT,0,0,0,0);CHKERRQ(ierr); 78c4762a1bSJed Brown 79c4762a1bSJed Brown ierr = PetscFinalize(); 80c4762a1bSJed Brown return ierr; 81c4762a1bSJed Brown } 82c4762a1bSJed Brown 83c4762a1bSJed Brown /*TEST 84c4762a1bSJed Brown 85c4762a1bSJed Brown build: 86*dfd57a17SPierre Jolivet requires: defined(PETSC_USE_LOG) 87c4762a1bSJed Brown 88c4762a1bSJed Brown test: 89c4762a1bSJed Brown 90c4762a1bSJed Brown TEST*/ 91