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) {
37 for(j=1,root=0;j<=MAXLEN;j*=10,root=(root+1)%size) {
39 for(i=0;i<j*size;i++) out[i] = i;
41 MPI_Scatter(out,j,MPI_INT,in,j,MPI_INT,root,MPI_COMM_WORLD);
44 if(in[k] != k+rank*j) {
45 fprintf(stderr,"task %d bad answer (%d) at index %d k of %d (should be %d)", rank,in[k],k,j,(k+rank*j));
51 MPI_Barrier( MPI_COMM_WORLD );
55 * small test: the root sends a single distinct double to other processes
57 int small_test( int rank, int size ) {
64 int root=0; // arbitrary choice
66 // on root, initialize sendbuf
68 sndbuf = malloc( sendcount*sizeof(double));
69 for (i=0; i<sendcount;i++) {
70 sndbuf[i] = (double) rank;
74 MPI_Scatter(sndbuf, sendcount, MPI_DOUBLE, &rcvd,recvcount,MPI_DOUBLE,root,MPI_COMM_WORLD);
81 int main(int argc, char **argv)
86 MPI_Init(&argc, &argv);
87 MPI_Comm_size(MPI_COMM_WORLD, &size);
88 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
93 printf("** Small Test Result: ... \n");
94 small_test( rank, size );
98 printf("** IBM Test Result: ... \n");
99 /* if (!ibm_test(rank, size))
100 printf("\t[%d] failed.\n", rank);
102 printf("\t[%d] ok.\n", rank);