xref: /petsc/src/mat/tests/ex243.c (revision d24d420451aab1d024a728b511d7b61b40627436) 
1*d24d4204SJose E. Roman static char help[] = "Test conversion of ScaLAPACK matrices.\n\n";
2*d24d4204SJose E. Roman 
3*d24d4204SJose E. Roman #include <petscmat.h>
4*d24d4204SJose E. Roman 
5*d24d4204SJose E. Roman int main(int argc, char** argv)
6*d24d4204SJose E. Roman {
7*d24d4204SJose E. Roman   Mat            A,A_scalapack;
8*d24d4204SJose E. Roman   PetscInt       i,j,M=10,N=5,nloc,mloc,nrows,ncols;
9*d24d4204SJose E. Roman   PetscErrorCode ierr;
10*d24d4204SJose E. Roman   PetscMPIInt    rank,size;
11*d24d4204SJose E. Roman   IS             isrows,iscols;
12*d24d4204SJose E. Roman   const PetscInt *rows,*cols;
13*d24d4204SJose E. Roman   PetscScalar    *v;
14*d24d4204SJose E. Roman   MatType        type;
15*d24d4204SJose E. Roman   PetscBool      isDense,isAIJ,flg;
16*d24d4204SJose E. Roman 
17*d24d4204SJose E. Roman   ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
18*d24d4204SJose E. Roman   ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr);
19*d24d4204SJose E. Roman   ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr);
20*d24d4204SJose E. Roman   ierr = PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL);CHKERRQ(ierr);
21*d24d4204SJose E. Roman   ierr = PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL);CHKERRQ(ierr);
22*d24d4204SJose E. Roman 
23*d24d4204SJose E. Roman   /* Create a matrix */
24*d24d4204SJose E. Roman   ierr = MatCreate(PETSC_COMM_WORLD, &A);CHKERRQ(ierr);
25*d24d4204SJose E. Roman   mloc = PETSC_DECIDE;
26*d24d4204SJose E. Roman   ierr = PetscSplitOwnershipEqual(PETSC_COMM_WORLD,&mloc,&M);CHKERRQ(ierr);
27*d24d4204SJose E. Roman   nloc = PETSC_DECIDE;
28*d24d4204SJose E. Roman   ierr = PetscSplitOwnershipEqual(PETSC_COMM_WORLD,&nloc,&N);CHKERRQ(ierr);
29*d24d4204SJose E. Roman   ierr = MatSetSizes(A,mloc,nloc,M,N);CHKERRQ(ierr);
30*d24d4204SJose E. Roman   ierr = MatSetType(A,MATDENSE);CHKERRQ(ierr);
31*d24d4204SJose E. Roman   ierr = MatSetFromOptions(A);CHKERRQ(ierr);
32*d24d4204SJose E. Roman   ierr = MatSetUp(A);CHKERRQ(ierr);
33*d24d4204SJose E. Roman 
34*d24d4204SJose E. Roman   /* Set local matrix entries */
35*d24d4204SJose E. Roman   ierr = MatGetOwnershipIS(A,&isrows,&iscols);CHKERRQ(ierr);
36*d24d4204SJose E. Roman   ierr = ISGetLocalSize(isrows,&nrows);CHKERRQ(ierr);
37*d24d4204SJose E. Roman   ierr = ISGetIndices(isrows,&rows);CHKERRQ(ierr);
38*d24d4204SJose E. Roman   ierr = ISGetLocalSize(iscols,&ncols);CHKERRQ(ierr);
39*d24d4204SJose E. Roman   ierr = ISGetIndices(iscols,&cols);CHKERRQ(ierr);
40*d24d4204SJose E. Roman   ierr = PetscMalloc1(nrows*ncols,&v);CHKERRQ(ierr);
41*d24d4204SJose E. Roman 
42*d24d4204SJose E. Roman   for (i=0; i<nrows; i++) {
43*d24d4204SJose E. Roman     for (j=0; j<ncols; j++) {
44*d24d4204SJose E. Roman       if (size == 1) {
45*d24d4204SJose E. Roman         v[i*ncols+j] = (PetscScalar)(i+j);
46*d24d4204SJose E. Roman       } else {
47*d24d4204SJose E. Roman         v[i*ncols+j] = (PetscScalar)rank+j*0.1;
48*d24d4204SJose E. Roman       }
49*d24d4204SJose E. Roman     }
50*d24d4204SJose E. Roman   }
51*d24d4204SJose E. Roman   ierr = MatSetValues(A,nrows,rows,ncols,cols,v,INSERT_VALUES);CHKERRQ(ierr);
52*d24d4204SJose E. Roman   ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
53*d24d4204SJose E. Roman   ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
54*d24d4204SJose E. Roman 
55*d24d4204SJose E. Roman   /* Test MatSetValues() by converting A to A_scalapack */
56*d24d4204SJose E. Roman   ierr = MatGetType(A,&type);CHKERRQ(ierr);
57*d24d4204SJose E. Roman   if (size == 1) {
58*d24d4204SJose E. Roman     ierr = PetscObjectTypeCompare((PetscObject)A,MATSEQDENSE,&isDense);CHKERRQ(ierr);
59*d24d4204SJose E. Roman     ierr = PetscObjectTypeCompare((PetscObject)A,MATSEQAIJ,&isAIJ);CHKERRQ(ierr);
60*d24d4204SJose E. Roman   } else {
61*d24d4204SJose E. Roman     ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIDENSE,&isDense);CHKERRQ(ierr);
62*d24d4204SJose E. Roman     ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIAIJ,&isAIJ);CHKERRQ(ierr);
63*d24d4204SJose E. Roman   }
64*d24d4204SJose E. Roman 
65*d24d4204SJose E. Roman   if (isDense || isAIJ) {
66*d24d4204SJose E. Roman     Mat Aexplicit;
67*d24d4204SJose E. Roman     ierr = MatConvert(A,MATSCALAPACK,MAT_INITIAL_MATRIX,&A_scalapack);CHKERRQ(ierr);
68*d24d4204SJose E. Roman     ierr = MatComputeOperator(A_scalapack,isAIJ?MATAIJ:MATDENSE,&Aexplicit);CHKERRQ(ierr);
69*d24d4204SJose E. Roman     ierr = MatMultEqual(Aexplicit,A_scalapack,5,&flg);CHKERRQ(ierr);
70*d24d4204SJose E. Roman     if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Aexplicit != A_scalapack.");
71*d24d4204SJose E. Roman     ierr = MatDestroy(&Aexplicit);CHKERRQ(ierr);
72*d24d4204SJose E. Roman 
73*d24d4204SJose E. Roman     /* Test MAT_REUSE_MATRIX which is only supported for inplace conversion */
74*d24d4204SJose E. Roman     ierr = MatConvert(A,MATSCALAPACK,MAT_INPLACE_MATRIX,&A);CHKERRQ(ierr);
75*d24d4204SJose E. Roman     ierr = MatMultEqual(A_scalapack,A,5,&flg);CHKERRQ(ierr);
76*d24d4204SJose E. Roman     if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_PLIB,"A_scalapack != A.");
77*d24d4204SJose E. Roman     ierr = MatDestroy(&A_scalapack);CHKERRQ(ierr);
78*d24d4204SJose E. Roman   }
79*d24d4204SJose E. Roman 
80*d24d4204SJose E. Roman   ierr = ISRestoreIndices(isrows,&rows);CHKERRQ(ierr);
81*d24d4204SJose E. Roman   ierr = ISRestoreIndices(iscols,&cols);CHKERRQ(ierr);
82*d24d4204SJose E. Roman   ierr = ISDestroy(&isrows);CHKERRQ(ierr);
83*d24d4204SJose E. Roman   ierr = ISDestroy(&iscols);CHKERRQ(ierr);
84*d24d4204SJose E. Roman   ierr = PetscFree(v);CHKERRQ(ierr);
85*d24d4204SJose E. Roman   ierr = MatDestroy(&A);CHKERRQ(ierr);
86*d24d4204SJose E. Roman   ierr = PetscFinalize();
87*d24d4204SJose E. Roman   return ierr;
88*d24d4204SJose E. Roman }
89*d24d4204SJose E. Roman 
90*d24d4204SJose E. Roman 
91*d24d4204SJose E. Roman /*TEST
92*d24d4204SJose E. Roman 
93*d24d4204SJose E. Roman    build:
94*d24d4204SJose E. Roman       requires: scalapack
95*d24d4204SJose E. Roman 
96*d24d4204SJose E. Roman    test:
97*d24d4204SJose E. Roman       nsize: 6
98*d24d4204SJose E. Roman 
99*d24d4204SJose E. Roman    test:
100*d24d4204SJose E. Roman       suffix: 2
101*d24d4204SJose E. Roman       nsize: 6
102*d24d4204SJose E. Roman       args: -mat_type aij
103*d24d4204SJose E. Roman       output_file: output/ex243_1.out
104*d24d4204SJose E. Roman 
105*d24d4204SJose E. Roman    test:
106*d24d4204SJose E. Roman       suffix: 3
107*d24d4204SJose E. Roman       nsize: 6
108*d24d4204SJose E. Roman       args: -mat_type scalapack
109*d24d4204SJose E. Roman       output_file: output/ex243_1.out
110*d24d4204SJose E. Roman 
111*d24d4204SJose E. Roman TEST*/
112