2 * MESSAGE PASSING INTERFACE TEST CASE SUITE
4 * Copyright IBM Corp. 1995
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8 *above copyright notice and the following paragraphs appear in all copies.
10 * IBM Corp. makes no representation that the test cases comprising this
11 * suite are correct or are an accurate representation of any standard.
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15 * even if IBM Corp. has been advised of the possibility of such damage.
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18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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22 * ***************************************************************************
27 int ibm_test(int rank, int size) {
38 out = malloc(MAXLEN*64*sizeof(int));
39 in = malloc(MAXLEN*sizeof(int));
41 for(j=1;j<=MAXLEN;j*=10){
47 MPI_Scatter(out,j,MPI_INT,in,j,MPI_INT,root,MPI_COMM_WORLD);
50 if(in[k] != k+rank*j) {
51 fprintf(stderr,"task %d bad answer (%d) at index %d k of %d (should be %d)", rank,in[k],k,j,(k+rank*j));
58 MPI_Barrier( MPI_COMM_WORLD );
63 * small test: the root sends a single distinct double to other processes
65 int small_test( int rank, int size ) {
68 int sendcount=1; // one double to each process
73 int root=0; // arbitrary choice
75 // on root, initialize sendbuf
77 sndbuf = malloc( size * sizeof(double));
78 for (i=0; i< size;i++) {
79 sndbuf[i] = (double) i;
83 retval=MPI_Scatter(sndbuf, sendcount, MPI_DOUBLE, &rcvd,recvcount,MPI_DOUBLE,root,MPI_COMM_WORLD);
84 if (retval != MPI_SUCCESS) {
85 fprintf(stderr,"(%s:%d) MPI_Scatter() returned retval=%d\n",__FILE__,__LINE__,retval);
90 if ((double)rank != rcvd) {
91 fprintf(stderr,"[%d] has %lf instead of %d\n",rank,rcvd,rank);
99 int main(int argc, char **argv)
104 MPI_Init(&argc, &argv);
105 MPI_Comm_size(MPI_COMM_WORLD, &size);
106 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
110 printf("** Small Test Result: ... \n");
111 if (! small_test( rank, size ))
112 printf("\t[%d] failed.\n", rank);
114 printf("\t[%d] ok.\n", rank);
117 MPI_Barrier( MPI_COMM_WORLD );
121 printf("** IBM Test Result: ... \n");
122 if (!ibm_test(rank, size))
123 printf("\t[%d] failed.\n", rank);
125 printf("\t[%d] ok.\n", rank);