Actual source code: test7.c
slepc-3.18.2 2023-01-26
1: /*
2: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3: SLEPc - Scalable Library for Eigenvalue Problem Computations
4: Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain
6: This file is part of SLEPc.
7: SLEPc is distributed under a 2-clause BSD license (see LICENSE).
8: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
9: */
11: static char help[] = "Test multiplication of a Mat times a BV.\n\n";
13: #include <slepcbv.h>
15: int main(int argc,char **argv)
16: {
17: Vec t,r,v;
18: Mat B,Ymat;
19: BV X,Y,Z=NULL,Zcopy=NULL;
20: PetscInt i,j,m=10,n,k=5,rep=1,Istart,Iend;
21: PetscScalar *pZ;
22: PetscReal norm;
23: PetscViewer view;
24: PetscBool flg,verbose,fromfile;
25: char filename[PETSC_MAX_PATH_LEN];
26: PetscViewer viewer;
27: BVMatMultType vmm;
30: SlepcInitialize(&argc,&argv,(char*)0,help);
31: PetscOptionsGetInt(NULL,NULL,"-k",&k,NULL);
32: PetscOptionsGetInt(NULL,NULL,"-rep",&rep,NULL);
33: PetscOptionsHasName(NULL,NULL,"-verbose",&verbose);
34: PetscOptionsGetString(NULL,NULL,"-file",filename,sizeof(filename),&fromfile);
35: MatCreate(PETSC_COMM_WORLD,&B);
36: PetscObjectSetName((PetscObject)B,"B");
37: if (fromfile) {
38: #if defined(PETSC_USE_COMPLEX)
39: PetscPrintf(PETSC_COMM_WORLD," Reading COMPLEX matrix from a binary file...\n");
40: #else
41: PetscPrintf(PETSC_COMM_WORLD," Reading REAL matrix from a binary file...\n");
42: #endif
43: PetscViewerBinaryOpen(PETSC_COMM_WORLD,filename,FILE_MODE_READ,&viewer);
44: MatSetFromOptions(B);
45: MatLoad(B,viewer);
46: PetscViewerDestroy(&viewer);
47: MatGetSize(B,&m,&n);
48: MatGetOwnershipRange(B,&Istart,&Iend);
49: } else {
50: /* Create 1-D Laplacian matrix */
51: PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL);
52: PetscOptionsGetInt(NULL,NULL,"-n",&n,&flg);
53: if (!flg) n = m;
54: MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,m,n);
55: MatSetFromOptions(B);
56: MatSetUp(B);
57: MatGetOwnershipRange(B,&Istart,&Iend);
58: for (i=Istart;i<Iend;i++) {
59: if (i>0 && i-1<n) MatSetValue(B,i,i-1,-1.0,INSERT_VALUES);
60: if (i+1<n) MatSetValue(B,i,i+1,-1.0,INSERT_VALUES);
61: if (i<n) MatSetValue(B,i,i,2.0,INSERT_VALUES);
62: }
63: MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);
64: MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);
65: }
67: PetscPrintf(PETSC_COMM_WORLD,"Test BVMatMult (m=%" PetscInt_FMT ", n=%" PetscInt_FMT ", k=%" PetscInt_FMT ").\n",m,n,k);
68: MatCreateVecs(B,&t,&r);
70: /* Create BV object X */
71: BVCreate(PETSC_COMM_WORLD,&X);
72: PetscObjectSetName((PetscObject)X,"X");
73: BVSetSizesFromVec(X,t,k);
74: BVSetMatMultMethod(X,BV_MATMULT_VECS);
75: BVSetFromOptions(X);
76: BVGetMatMultMethod(X,&vmm);
77: PetscPrintf(PETSC_COMM_WORLD,"Using method: %s\n",BVMatMultTypes[vmm]);
79: /* Set up viewer */
80: PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&view);
81: if (verbose) PetscViewerPushFormat(view,PETSC_VIEWER_ASCII_MATLAB);
83: /* Fill X entries */
84: for (j=0;j<k;j++) {
85: BVGetColumn(X,j,&v);
86: VecSet(v,0.0);
87: for (i=Istart;i<PetscMin(j+1,Iend);i++) VecSetValue(v,i,1.0,INSERT_VALUES);
88: VecAssemblyBegin(v);
89: VecAssemblyEnd(v);
90: BVRestoreColumn(X,j,&v);
91: }
92: if (verbose) {
93: MatView(B,view);
94: BVView(X,view);
95: }
97: /* Create BV object Y */
98: BVCreate(PETSC_COMM_WORLD,&Y);
99: PetscObjectSetName((PetscObject)Y,"Y");
100: BVSetSizesFromVec(Y,r,k+4);
101: BVSetMatMultMethod(Y,BV_MATMULT_VECS);
102: BVSetFromOptions(Y);
103: BVSetActiveColumns(Y,2,k+2);
105: /* Test BVMatMult */
106: for (i=0;i<rep;i++) BVMatMult(X,B,Y);
107: if (verbose) BVView(Y,view);
109: if (fromfile) {
110: /* Test BVMatMultTranspose */
111: BVDuplicate(X,&Z);
112: BVSetRandom(Z);
113: for (i=0;i<rep;i++) BVMatMultTranspose(Z,B,Y);
114: if (verbose) {
115: BVView(Z,view);
116: BVView(Y,view);
117: }
118: BVDestroy(&Z);
119: BVMatMultTransposeColumn(Y,B,2);
120: if (verbose) BVView(Y,view);
121: }
123: /* Test BVGetMat/RestoreMat */
124: BVGetMat(Y,&Ymat);
125: PetscObjectSetName((PetscObject)Ymat,"Ymat");
126: if (verbose) MatView(Ymat,view);
127: BVRestoreMat(Y,&Ymat);
129: if (!fromfile) {
130: /* Create BV object Z */
131: BVDuplicateResize(Y,k,&Z);
132: PetscObjectSetName((PetscObject)Z,"Z");
134: /* Fill Z entries */
135: for (j=0;j<k;j++) {
136: BVGetColumn(Z,j,&v);
137: VecSet(v,0.0);
138: if (!Istart) VecSetValue(v,0,1.0,ADD_VALUES);
139: if (j<n && j>=Istart && j<Iend) VecSetValue(v,j,1.0,ADD_VALUES);
140: if (j+1<n && j>=Istart && j<Iend) VecSetValue(v,j+1,-1.0,ADD_VALUES);
141: VecAssemblyBegin(v);
142: VecAssemblyEnd(v);
143: BVRestoreColumn(Z,j,&v);
144: }
145: if (verbose) BVView(Z,view);
147: /* Save a copy of Z */
148: BVDuplicate(Z,&Zcopy);
149: BVCopy(Z,Zcopy);
151: /* Test BVMult, check result of previous operations */
152: BVMult(Z,-1.0,1.0,Y,NULL);
153: BVNorm(Z,NORM_FROBENIUS,&norm);
154: PetscPrintf(PETSC_COMM_WORLD,"Norm of error: %g\n",(double)norm);
155: }
157: /* Test BVMatMultColumn, multiply Y(:,2), result in Y(:,3) */
158: if (m==n) {
159: BVMatMultColumn(Y,B,2);
160: if (verbose) BVView(Y,view);
162: if (!fromfile) {
163: /* Test BVGetArray, modify Z to match Y */
164: BVCopy(Zcopy,Z);
165: BVGetArray(Z,&pZ);
166: if (Istart==0) {
168: pZ[Iend] = 5.0; /* modify 3 first entries of second column */
169: pZ[Iend+1] = -4.0;
170: pZ[Iend+2] = 1.0;
171: }
172: BVRestoreArray(Z,&pZ);
173: if (verbose) BVView(Z,view);
175: /* Check result again with BVMult */
176: BVMult(Z,-1.0,1.0,Y,NULL);
177: BVNorm(Z,NORM_FROBENIUS,&norm);
178: PetscPrintf(PETSC_COMM_WORLD,"Norm of error: %g\n",(double)norm);
179: }
180: }
182: BVDestroy(&Z);
183: BVDestroy(&Zcopy);
184: BVDestroy(&X);
185: BVDestroy(&Y);
186: MatDestroy(&B);
187: VecDestroy(&t);
188: VecDestroy(&r);
189: SlepcFinalize();
190: return 0;
191: }
193: /*TEST
195: testset:
196: output_file: output/test7_1.out
197: filter: grep -v "Using method"
198: test:
199: suffix: 1
200: args: -bv_type {{vecs contiguous svec mat}shared output} -bv_matmult vecs
201: test:
202: suffix: 1_cuda
203: args: -bv_type svec -mat_type aijcusparse -bv_matmult vecs
204: requires: cuda
205: test:
206: suffix: 1_mat
207: args: -bv_type {{vecs contiguous svec mat}shared output} -bv_matmult mat
209: testset:
210: output_file: output/test7_2.out
211: filter: grep -v "Using method"
212: args: -m 34 -n 38 -k 9
213: nsize: 2
214: test:
215: suffix: 2
216: args: -bv_type {{vecs contiguous svec mat}shared output} -bv_matmult vecs
217: test:
218: suffix: 2_cuda
219: args: -bv_type svec -mat_type aijcusparse -bv_matmult vecs
220: requires: cuda
221: test:
222: suffix: 2_mat
223: args: -bv_type {{vecs contiguous svec mat}shared output} -bv_matmult mat
225: testset:
226: output_file: output/test7_3.out
227: filter: grep -v "Using method"
228: args: -file ${SLEPC_DIR}/share/slepc/datafiles/matrices/bfw62a.petsc -bv_reproducible_random
229: requires: double !complex !defined(PETSC_USE_64BIT_INDICES)
230: nsize: 2
231: test:
232: suffix: 3
233: args: -bv_type {{vecs contiguous svec mat}shared output} -bv_matmult {{vecs mat}}
235: TEST*/