1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] ="Tests MatPtAP() \n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown /* 7c4762a1bSJed Brown * This is an extremely simple example to test MatPtAP. It is very useful when developing and debugging the code. 8c4762a1bSJed Brown * 9c4762a1bSJed Brown * A = 10c4762a1bSJed Brown 11c4762a1bSJed Brown 1 2 0 4 12c4762a1bSJed Brown 0 1 2 0 13c4762a1bSJed Brown 2 0 4 0 14c4762a1bSJed Brown 0 1 2 1 15c4762a1bSJed Brown * 16c4762a1bSJed Brown * 17c4762a1bSJed Brown * 18c4762a1bSJed Brown * P = 19c4762a1bSJed Brown 20c4762a1bSJed Brown 1.00000 0.00000 21c4762a1bSJed Brown 0.30000 0.50000 22c4762a1bSJed Brown 0.00000 0.80000 23c4762a1bSJed Brown 0.90000 0.00000 24c4762a1bSJed Brown * 25c4762a1bSJed Brown * 26c4762a1bSJed Brown *AP = 27c4762a1bSJed Brown * 28c4762a1bSJed Brown * 5.20000 1.00000 29c4762a1bSJed Brown 0.30000 2.10000 30c4762a1bSJed Brown 2.00000 3.20000 31c4762a1bSJed Brown 1.20000 2.10000 32c4762a1bSJed Brown * 33c4762a1bSJed Brown * PT = 34c4762a1bSJed Brown 35c4762a1bSJed Brown 1.00000 0.30000 0.00000 0.90000 36c4762a1bSJed Brown 0.00000 0.50000 0.80000 0.00000 37c4762a1bSJed Brown 38c4762a1bSJed Brown * 39c4762a1bSJed Brown * C = 40c4762a1bSJed Brown 41c4762a1bSJed Brown 6.3700 3.5200 42c4762a1bSJed Brown 1.7500 3.6100 43c4762a1bSJed Brown * 44c4762a1bSJed Brown * */ 45c4762a1bSJed Brown 46c4762a1bSJed Brown int main(int argc,char **argv) 47c4762a1bSJed Brown { 48c4762a1bSJed Brown PetscErrorCode ierr; 49c4762a1bSJed Brown Mat A,P,PtAP; 50c4762a1bSJed Brown PetscInt i1[] = {0, 3, 5}, i2[] = {0,2,5}; 51c4762a1bSJed Brown PetscInt j1[] = {0, 1, 3, 1, 2}, j2[] = {0, 2, 1, 2, 3}; 52c4762a1bSJed Brown PetscScalar a1[] = {1, 2, 4, 1, 2}, a2[] = {2, 4, 1, 2, 1}; 53c4762a1bSJed Brown PetscInt pi1[] = {0,1,3}, pi2[] = {0,1,2}; 54c4762a1bSJed Brown PetscInt pj1[] = {0, 0, 1}, pj2[] = {1,0}; 55c4762a1bSJed Brown PetscScalar pa1[] = {1, 0.3, 0.5}, pa2[] = {0.8, 0.9}; 56c4762a1bSJed Brown MPI_Comm comm; 57c4762a1bSJed Brown PetscMPIInt rank,size; 58c4762a1bSJed Brown 59c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr; 60c4762a1bSJed Brown comm = PETSC_COMM_WORLD; 61ffc4695bSBarry Smith ierr = MPI_Comm_rank(comm,&rank);CHKERRMPI(ierr); 62ffc4695bSBarry Smith ierr = MPI_Comm_size(comm,&size);CHKERRMPI(ierr); 63*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(size != 2,comm,PETSC_ERR_ARG_INCOMP,"You have to use two processor cores to run this example "); 64c4762a1bSJed Brown ierr = MatCreateMPIAIJWithArrays(comm,2,2,PETSC_DETERMINE,PETSC_DETERMINE,rank? i2:i1,rank? j2:j1,rank? a2:a1,&A);CHKERRQ(ierr); 65c4762a1bSJed Brown ierr = MatCreateMPIAIJWithArrays(comm,2,1,PETSC_DETERMINE,PETSC_DETERMINE,rank? pi2:pi1,rank? pj2:pj1,rank? pa2:pa1,&P);CHKERRQ(ierr); 66c4762a1bSJed Brown ierr = MatPtAP(A,P,MAT_INITIAL_MATRIX,1.1,&PtAP);CHKERRQ(ierr); 67c4762a1bSJed Brown ierr = MatView(A,NULL);CHKERRQ(ierr); 68c4762a1bSJed Brown ierr = MatView(P,NULL);CHKERRQ(ierr); 69c4762a1bSJed Brown ierr = MatView(PtAP,NULL);CHKERRQ(ierr); 70c4762a1bSJed Brown ierr = MatPtAP(A,P,MAT_REUSE_MATRIX,1.1,&PtAP);CHKERRQ(ierr); 71c4762a1bSJed Brown ierr = MatView(A,NULL);CHKERRQ(ierr); 72c4762a1bSJed Brown ierr = MatView(P,NULL);CHKERRQ(ierr); 73c4762a1bSJed Brown ierr = MatView(PtAP,NULL);CHKERRQ(ierr); 74c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 75c4762a1bSJed Brown ierr = MatDestroy(&P);CHKERRQ(ierr); 76c4762a1bSJed Brown ierr = MatDestroy(&PtAP);CHKERRQ(ierr); 77c4762a1bSJed Brown ierr = PetscFinalize(); 78c4762a1bSJed Brown return ierr; 79c4762a1bSJed Brown } 80c4762a1bSJed Brown 81c4762a1bSJed Brown /*TEST 82c4762a1bSJed Brown test: 83c4762a1bSJed Brown nsize: 2 84c4762a1bSJed Brown args: -matptap_via allatonce 85c4762a1bSJed Brown output_file: output/ex90_1.out 86c4762a1bSJed Brown 87c4762a1bSJed Brown test: 88c4762a1bSJed Brown nsize: 2 89c4762a1bSJed Brown suffix: merged 90c4762a1bSJed Brown args: -matptap_via allatonce_merged 91c4762a1bSJed Brown output_file: output/ex90_1.out 92c4762a1bSJed Brown 93c4762a1bSJed Brown TEST*/ 94