1 2 static char help[] = "Test memory leak when duplicating a redundant matrix.\n\n"; 3 4 /* 5 Include "petscmat.h" so that we can use matrices. 6 automatically includes: 7 petscsys.h - base PETSc routines petscvec.h - vectors 8 petscmat.h - matrices 9 petscis.h - index sets petscviewer.h - viewers 10 */ 11 #include <petscmat.h> 12 13 int main(int argc,char **args) 14 { 15 Mat A,Ar,C; 16 PetscViewer fd; /* viewer */ 17 char file[PETSC_MAX_PATH_LEN]; /* input file name */ 18 PetscInt ns=2; 19 PetscMPIInt size; 20 PetscSubcomm subc; 21 PetscBool flg; 22 23 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 24 /* 25 Determine files from which we read the two linear systems 26 (matrix and right-hand-side vector). 27 */ 28 PetscCall(PetscOptionsGetString(NULL,NULL,"-f0",file,sizeof(file),&flg)); 29 PetscCheck(flg,PETSC_COMM_WORLD,PETSC_ERR_USER,"Must indicate binary file with the -f0 option"); 30 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd)); 31 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 32 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Reading matrix with %d processors\n",size)); 33 PetscCall(MatCreate(PETSC_COMM_WORLD,&A)); 34 PetscCall(MatLoad(A,fd)); 35 PetscCall(PetscViewerDestroy(&fd)); 36 /* 37 Determines amount of subcomunicators 38 */ 39 PetscCall(PetscOptionsGetInt(NULL,NULL,"-nsub",&ns,NULL)); 40 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Splitting in %" PetscInt_FMT " subcommunicators\n",ns)); 41 PetscCall(PetscSubcommCreate(PetscObjectComm((PetscObject)A),&subc)); 42 PetscCall(PetscSubcommSetNumber(subc,ns)); 43 PetscCall(PetscSubcommSetType(subc,PETSC_SUBCOMM_CONTIGUOUS)); 44 PetscCall(PetscSubcommSetFromOptions(subc)); 45 PetscCall(MatCreateRedundantMatrix(A,0,PetscSubcommChild(subc),MAT_INITIAL_MATRIX,&Ar)); 46 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Copying matrix\n")); 47 PetscCall(MatDuplicate(Ar,MAT_COPY_VALUES,&C)); 48 PetscCall(MatAXPY(Ar,0.1,C,DIFFERENT_NONZERO_PATTERN)); 49 PetscCall(PetscSubcommDestroy(&subc)); 50 51 /* 52 Free memory 53 */ 54 PetscCall(MatDestroy(&A)); 55 PetscCall(MatDestroy(&Ar)); 56 PetscCall(MatDestroy(&C)); 57 PetscCall(PetscFinalize()); 58 return 0; 59 } 60 61 /*TEST 62 63 test: 64 nsize: 4 65 requires: !complex double !defined(PETSC_USE_64BIT_INDICES) 66 args: -f0 ${wPETSC_DIR}/share/petsc/datafiles/matrices/ns-real-int32-float64 -malloc_dump 67 68 TEST*/ 69