xref: /petsc/src/vec/is/sf/tutorials/ex3.c (revision c4762a1b19cd2af06abeed90e8f9d34fb975dd94) 
1*c4762a1bSJed Brown static const char help[] = "Test freeing of MPI types in PetscSF\n\n";
2*c4762a1bSJed Brown 
3*c4762a1bSJed Brown #include <petscvec.h>
4*c4762a1bSJed Brown #include <petscsf.h>
5*c4762a1bSJed Brown #include <petscviewer.h>
6*c4762a1bSJed Brown 
7*c4762a1bSJed Brown int main(int argc, char **argv)
8*c4762a1bSJed Brown {
9*c4762a1bSJed Brown   PetscInt    ierr;
10*c4762a1bSJed Brown   PetscSF     sf;
11*c4762a1bSJed Brown   Vec         A,Aout;
12*c4762a1bSJed Brown   PetscScalar *bufA;
13*c4762a1bSJed Brown   PetscScalar *bufAout;
14*c4762a1bSJed Brown   PetscMPIInt rank, size;
15*c4762a1bSJed Brown   PetscInt    nroots, nleaves;
16*c4762a1bSJed Brown   PetscInt    i;
17*c4762a1bSJed Brown   PetscInt    *ilocal;
18*c4762a1bSJed Brown   PetscSFNode *iremote;
19*c4762a1bSJed Brown   PetscBool   test_dupped_type;
20*c4762a1bSJed Brown   MPI_Datatype contig;
21*c4762a1bSJed Brown 
22*c4762a1bSJed Brown   ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr;
23*c4762a1bSJed Brown   ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr);
24*c4762a1bSJed Brown   ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr);
25*c4762a1bSJed Brown 
26*c4762a1bSJed Brown   if (size != 1) SETERRQ(PETSC_COMM_WORLD, PETSC_ERR_USER, "Only coded for one MPI process");
27*c4762a1bSJed Brown 
28*c4762a1bSJed Brown   ierr             = PetscOptionsBegin(PETSC_COMM_WORLD,"","PetscSF type freeing options","none");CHKERRQ(ierr);
29*c4762a1bSJed Brown   test_dupped_type = PETSC_FALSE;
30*c4762a1bSJed Brown   ierr             = PetscOptionsBool("-test_dupped_type", "Test dupped input type","",test_dupped_type,&test_dupped_type,NULL);CHKERRQ(ierr);
31*c4762a1bSJed Brown   ierr             = PetscOptionsEnd();CHKERRQ(ierr);
32*c4762a1bSJed Brown 
33*c4762a1bSJed Brown   ierr = PetscSFCreate(PETSC_COMM_WORLD,&sf);CHKERRQ(ierr);
34*c4762a1bSJed Brown   ierr = PetscSFSetFromOptions(sf);CHKERRQ(ierr);
35*c4762a1bSJed Brown 
36*c4762a1bSJed Brown   nleaves = 1;
37*c4762a1bSJed Brown   nroots = 1;
38*c4762a1bSJed Brown   ierr = PetscMalloc1(nleaves,&ilocal);CHKERRQ(ierr);
39*c4762a1bSJed Brown 
40*c4762a1bSJed Brown   for (i = 0; i<nleaves; i++) {
41*c4762a1bSJed Brown     ilocal[i] = i;
42*c4762a1bSJed Brown   }
43*c4762a1bSJed Brown 
44*c4762a1bSJed Brown   ierr = PetscMalloc1(nleaves,&iremote);CHKERRQ(ierr);
45*c4762a1bSJed Brown   iremote[0].rank = 0;
46*c4762a1bSJed Brown   iremote[0].index = 0;
47*c4762a1bSJed Brown   ierr = PetscSFSetGraph(sf,nroots,nleaves,ilocal,PETSC_OWN_POINTER,iremote,PETSC_OWN_POINTER);CHKERRQ(ierr);
48*c4762a1bSJed Brown   ierr = PetscSFSetUp(sf);CHKERRQ(ierr);
49*c4762a1bSJed Brown   ierr = PetscSFView(sf,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
50*c4762a1bSJed Brown   ierr = VecCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr);
51*c4762a1bSJed Brown   ierr = VecSetSizes(A,4,PETSC_DETERMINE);CHKERRQ(ierr);
52*c4762a1bSJed Brown   ierr = VecSetFromOptions(A);CHKERRQ(ierr);
53*c4762a1bSJed Brown   ierr = VecSetUp(A);CHKERRQ(ierr);
54*c4762a1bSJed Brown 
55*c4762a1bSJed Brown   ierr = VecDuplicate(A,&Aout);CHKERRQ(ierr);
56*c4762a1bSJed Brown   ierr = VecGetArray(A,&bufA);CHKERRQ(ierr);
57*c4762a1bSJed Brown   for (i=0; i<4; i++) {
58*c4762a1bSJed Brown     bufA[i] = (PetscScalar)i;
59*c4762a1bSJed Brown   }
60*c4762a1bSJed Brown   ierr = VecRestoreArray(A,&bufA);CHKERRQ(ierr);
61*c4762a1bSJed Brown 
62*c4762a1bSJed Brown   ierr = VecGetArrayRead(A,(const PetscScalar**)&bufA);CHKERRQ(ierr);
63*c4762a1bSJed Brown   ierr = VecGetArray(Aout,&bufAout);CHKERRQ(ierr);
64*c4762a1bSJed Brown 
65*c4762a1bSJed Brown   ierr = MPI_Type_contiguous(4, MPIU_SCALAR, &contig);CHKERRQ(ierr);
66*c4762a1bSJed Brown   ierr = MPI_Type_commit(&contig);CHKERRQ(ierr);
67*c4762a1bSJed Brown 
68*c4762a1bSJed Brown   if (test_dupped_type) {
69*c4762a1bSJed Brown     MPI_Datatype tmp;
70*c4762a1bSJed Brown     ierr = MPI_Type_dup(contig, &tmp);CHKERRQ(ierr);
71*c4762a1bSJed Brown     ierr = MPI_Type_free(&contig);CHKERRQ(ierr);
72*c4762a1bSJed Brown     contig = tmp;
73*c4762a1bSJed Brown   }
74*c4762a1bSJed Brown   for (i=0;i<10000;i++) {
75*c4762a1bSJed Brown     ierr = PetscSFBcastBegin(sf,contig,bufA,bufAout);CHKERRQ(ierr);
76*c4762a1bSJed Brown     ierr = PetscSFBcastEnd(sf,contig,bufA,bufAout);CHKERRQ(ierr);
77*c4762a1bSJed Brown   }
78*c4762a1bSJed Brown   ierr = VecRestoreArrayRead(A,(const PetscScalar**)&bufA);CHKERRQ(ierr);
79*c4762a1bSJed Brown   ierr = VecRestoreArray(Aout,&bufAout);CHKERRQ(ierr);
80*c4762a1bSJed Brown 
81*c4762a1bSJed Brown   ierr = VecView(Aout,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
82*c4762a1bSJed Brown   ierr = VecDestroy(&A);CHKERRQ(ierr);
83*c4762a1bSJed Brown   ierr = VecDestroy(&Aout);CHKERRQ(ierr);
84*c4762a1bSJed Brown   ierr = PetscSFDestroy(&sf);CHKERRQ(ierr);
85*c4762a1bSJed Brown   ierr = MPI_Type_free(&contig);CHKERRQ(ierr);
86*c4762a1bSJed Brown   ierr = PetscFinalize();
87*c4762a1bSJed Brown   return ierr;
88*c4762a1bSJed Brown }
89*c4762a1bSJed Brown 
90*c4762a1bSJed Brown /*TEST
91*c4762a1bSJed Brown 
92*c4762a1bSJed Brown    test:
93*c4762a1bSJed Brown       suffix: basic
94*c4762a1bSJed Brown       args: -sf_type basic
95*c4762a1bSJed Brown 
96*c4762a1bSJed Brown    test:
97*c4762a1bSJed Brown       suffix: basic_dupped
98*c4762a1bSJed Brown       args: -test_dupped_type -sf_type basic
99*c4762a1bSJed Brown 
100*c4762a1bSJed Brown    test:
101*c4762a1bSJed Brown       suffix: window
102*c4762a1bSJed Brown       filter: grep -v "type" | grep -v "sort"
103*c4762a1bSJed Brown       args: -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create allocate dynamic}}
104*c4762a1bSJed Brown       requires: define(PETSC_HAVE_MPI_ONE_SIDED)
105*c4762a1bSJed Brown 
106*c4762a1bSJed Brown    test:
107*c4762a1bSJed Brown       suffix: window_dupped
108*c4762a1bSJed Brown       filter: grep -v "type" | grep -v "sort"
109*c4762a1bSJed Brown       args: -test_dupped_type -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create allocate dynamic}}
110*c4762a1bSJed Brown       requires: define(PETSC_HAVE_MPI_ONE_SIDED)
111*c4762a1bSJed Brown 
112*c4762a1bSJed Brown    test:
113*c4762a1bSJed Brown       suffix: window_shared
114*c4762a1bSJed Brown       output_file: output/ex3_window.out
115*c4762a1bSJed Brown       filter: grep -v "type" | grep -v "sort"
116*c4762a1bSJed Brown       args: -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor shared
117*c4762a1bSJed Brown       requires: define(PETSC_HAVE_MPI_PROCESS_SHARED_MEMORY) define(PETSC_HAVE_MPI_ONE_SIDED)
118*c4762a1bSJed Brown 
119*c4762a1bSJed Brown    test:
120*c4762a1bSJed Brown       suffix: window_dupped_shared
121*c4762a1bSJed Brown       output_file: output/ex3_window_dupped.out
122*c4762a1bSJed Brown       filter: grep -v "type" | grep -v "sort"
123*c4762a1bSJed Brown       args: -test_dupped_type -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor shared
124*c4762a1bSJed Brown       requires: define(PETSC_HAVE_MPI_PROCESS_SHARED_MEMORY) define(PETSC_HAVE_MPI_ONE_SIDED)
125*c4762a1bSJed Brown 
126*c4762a1bSJed Brown TEST*/
127