1 static char help[] = "Tests MatCreateDenseCUDA(), MatDenseCUDAPlaceArray(), MatDenseCUDAReplaceArray(), MatDenseCUDAResetArray()\n"; 2 3 #include <petscmat.h> 4 5 static PetscErrorCode MatMult_S(Mat S, Vec x, Vec y) 6 { 7 Mat A; 8 9 PetscFunctionBeginUser; 10 PetscCall(MatShellGetContext(S, &A)); 11 PetscCall(MatMult(A, x, y)); 12 PetscFunctionReturn(0); 13 } 14 15 static PetscBool test_cusparse_transgen = PETSC_FALSE; 16 17 static PetscErrorCode MatMultTranspose_S(Mat S, Vec x, Vec y) 18 { 19 Mat A; 20 21 PetscFunctionBeginUser; 22 PetscCall(MatShellGetContext(S, &A)); 23 PetscCall(MatMultTranspose(A, x, y)); 24 25 /* alternate transgen true and false to test code logic */ 26 PetscCall(MatSetOption(A, MAT_FORM_EXPLICIT_TRANSPOSE, test_cusparse_transgen)); 27 test_cusparse_transgen = (PetscBool)!test_cusparse_transgen; 28 PetscFunctionReturn(0); 29 } 30 31 int main(int argc, char **argv) 32 { 33 Mat A, B, C, S; 34 Vec t, v; 35 PetscScalar *vv, *aa; 36 PetscInt n = 30, k = 6, l = 0, i, Istart, Iend, nloc, bs, test = 1; 37 PetscBool flg, reset, use_shell = PETSC_FALSE; 38 VecType vtype; 39 40 PetscFunctionBeginUser; 41 PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 42 PetscCall(PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL)); 43 PetscCall(PetscOptionsGetInt(NULL, NULL, "-k", &k, NULL)); 44 PetscCall(PetscOptionsGetInt(NULL, NULL, "-l", &l, NULL)); 45 PetscCall(PetscOptionsGetInt(NULL, NULL, "-test", &test, NULL)); 46 PetscCall(PetscOptionsGetBool(NULL, NULL, "-use_shell", &use_shell, NULL)); 47 PetscCheck(k >= 0, PETSC_COMM_WORLD, PETSC_ERR_USER, "k %" PetscInt_FMT " must be positive", k); 48 PetscCheck(l >= 0, PETSC_COMM_WORLD, PETSC_ERR_USER, "l %" PetscInt_FMT " must be positive", l); 49 PetscCheck(l <= k, PETSC_COMM_WORLD, PETSC_ERR_USER, "l %" PetscInt_FMT " must be smaller or equal than k %" PetscInt_FMT, l, k); 50 51 /* sparse matrix */ 52 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 53 PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, n, n)); 54 PetscCall(MatSetType(A, MATAIJCUSPARSE)); 55 PetscCall(MatSetOptionsPrefix(A, "A_")); 56 PetscCall(MatSetFromOptions(A)); 57 PetscCall(MatSetUp(A)); 58 59 /* test special case for SeqAIJCUSPARSE to generate explicit transpose (not default) */ 60 PetscCall(MatSetOption(A, MAT_FORM_EXPLICIT_TRANSPOSE, PETSC_TRUE)); 61 62 PetscCall(MatGetOwnershipRange(A, &Istart, &Iend)); 63 for (i = Istart; i < Iend; i++) { 64 if (i > 0) PetscCall(MatSetValue(A, i, i - 1, -1.0, INSERT_VALUES)); 65 if (i < n - 1) PetscCall(MatSetValue(A, i, i + 1, -1.0, INSERT_VALUES)); 66 PetscCall(MatSetValue(A, i, i, 2.0, INSERT_VALUES)); 67 } 68 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 69 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 70 71 /* template vector */ 72 PetscCall(MatCreateVecs(A, NULL, &t)); 73 PetscCall(VecGetType(t, &vtype)); 74 75 /* long vector, contains the stacked columns of an nxk dense matrix */ 76 PetscCall(VecGetLocalSize(t, &nloc)); 77 PetscCall(VecGetBlockSize(t, &bs)); 78 PetscCall(VecCreate(PetscObjectComm((PetscObject)t), &v)); 79 PetscCall(VecSetType(v, vtype)); 80 PetscCall(VecSetSizes(v, k * nloc, k * n)); 81 PetscCall(VecSetBlockSize(v, bs)); 82 PetscCall(VecSetRandom(v, NULL)); 83 84 /* dense matrix that contains the columns of v */ 85 PetscCall(VecCUDAGetArray(v, &vv)); 86 87 /* test few cases for MatDenseCUDA handling pointers */ 88 switch (test) { 89 case 1: 90 PetscCall(MatCreateDenseCUDA(PetscObjectComm((PetscObject)v), nloc, PETSC_DECIDE, n, k - l, vv, &B)); /* pass a pointer to avoid allocation of storage */ 91 PetscCall(MatDenseCUDAReplaceArray(B, NULL)); /* replace with a null pointer, the value after BVRestoreMat */ 92 PetscCall(MatDenseCUDAPlaceArray(B, vv + l * nloc)); /* set the actual pointer */ 93 reset = PETSC_TRUE; 94 break; 95 case 2: 96 PetscCall(MatCreateDenseCUDA(PetscObjectComm((PetscObject)v), nloc, PETSC_DECIDE, n, k - l, NULL, &B)); 97 PetscCall(MatDenseCUDAPlaceArray(B, vv + l * nloc)); /* set the actual pointer */ 98 reset = PETSC_TRUE; 99 break; 100 default: 101 PetscCall(MatCreateDenseCUDA(PetscObjectComm((PetscObject)v), nloc, PETSC_DECIDE, n, k - l, vv + l * nloc, &B)); 102 reset = PETSC_FALSE; 103 break; 104 } 105 PetscCall(VecCUDARestoreArray(v, &vv)); 106 107 /* Test MatMatMult */ 108 if (use_shell) { 109 /* we could have called the general convertor below, but we explicit set the operations 110 ourselves to test MatProductSymbolic_X_Dense, MatProductNumeric_X_Dense code */ 111 /* PetscCall(MatConvert(A,MATSHELL,MAT_INITIAL_MATRIX,&S)); */ 112 PetscCall(MatCreateShell(PetscObjectComm((PetscObject)v), nloc, nloc, n, n, A, &S)); 113 PetscCall(MatShellSetOperation(S, MATOP_MULT, (void (*)(void))MatMult_S)); 114 PetscCall(MatShellSetOperation(S, MATOP_MULT_TRANSPOSE, (void (*)(void))MatMultTranspose_S)); 115 PetscCall(MatShellSetVecType(S, vtype)); 116 } else { 117 PetscCall(PetscObjectReference((PetscObject)A)); 118 S = A; 119 } 120 121 PetscCall(MatCreateDenseCUDA(PetscObjectComm((PetscObject)v), nloc, PETSC_DECIDE, n, k - l, NULL, &C)); 122 123 /* test MatMatMult */ 124 PetscCall(MatProductCreateWithMat(S, B, NULL, C)); 125 PetscCall(MatProductSetType(C, MATPRODUCT_AB)); 126 PetscCall(MatProductSetFromOptions(C)); 127 PetscCall(MatProductSymbolic(C)); 128 PetscCall(MatProductNumeric(C)); 129 PetscCall(MatMatMultEqual(S, B, C, 10, &flg)); 130 if (!flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Error MatMatMult\n")); 131 132 /* test MatTransposeMatMult */ 133 PetscCall(MatProductCreateWithMat(S, B, NULL, C)); 134 PetscCall(MatProductSetType(C, MATPRODUCT_AtB)); 135 PetscCall(MatProductSetFromOptions(C)); 136 PetscCall(MatProductSymbolic(C)); 137 PetscCall(MatProductNumeric(C)); 138 PetscCall(MatTransposeMatMultEqual(S, B, C, 10, &flg)); 139 if (!flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Error MatTransposeMatMult\n")); 140 141 PetscCall(MatDestroy(&C)); 142 PetscCall(MatDestroy(&S)); 143 144 /* finished using B */ 145 PetscCall(MatDenseCUDAGetArray(B, &aa)); 146 PetscCheck(vv == aa - l * nloc, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Wrong array"); 147 PetscCall(MatDenseCUDARestoreArray(B, &aa)); 148 if (reset) PetscCall(MatDenseCUDAResetArray(B)); 149 PetscCall(VecCUDARestoreArray(v, &vv)); 150 151 if (test == 1) { 152 PetscCall(MatDenseCUDAGetArray(B, &aa)); 153 PetscCheck(!aa, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Expected a null pointer"); 154 PetscCall(MatDenseCUDARestoreArray(B, &aa)); 155 } 156 157 /* free work space */ 158 PetscCall(MatDestroy(&B)); 159 PetscCall(MatDestroy(&A)); 160 PetscCall(VecDestroy(&t)); 161 PetscCall(VecDestroy(&v)); 162 PetscCall(PetscFinalize()); 163 return 0; 164 } 165 166 /*TEST 167 168 build: 169 requires: cuda 170 171 test: 172 requires: cuda 173 suffix: 1 174 nsize: {{1 2}} 175 args: -A_mat_type {{aij aijcusparse}} -test {{0 1 2}} -k 6 -l {{0 5}} -use_shell {{0 1}} 176 177 TEST*/ 178