Actual source code: test7.c

slepc-3.18.2 2023-01-26
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  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*/