1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
3 * (C) 2014 by Argonne National Laboratory.
4 * See COPYRIGHT in top-level directory.
12 #define DATA_SIZE 324*4
17 static void handle_error(int errcode, const char *str)
19 char msg[MPI_MAX_ERROR_STRING];
21 MPI_Error_string(errcode, msg, &resultlen);
22 fprintf(stderr, "%s: %s\n", str, msg);
23 MPI_Abort(MPI_COMM_WORLD, 1);
26 #define CHECK(fn) { int errcode; errcode = (fn); if (errcode != MPI_SUCCESS) handle_error(errcode, #fn); }
28 int main(int argc, char **argv)
31 MPI_Datatype file_type, mem_type;
34 int data_size = DATA_SIZE;
35 int i, j, k, nr_errors = 0;
36 MPI_Aint disp[BLK_COUNT];
38 char *filename = (char*)"unnamed.dat";
42 MPI_Init(&argc, &argv);
43 disp[0] = (MPI_Aint) (PAD);
44 disp[1] = (MPI_Aint) (data_size * 1 + PAD);
45 disp[2] = (MPI_Aint) (data_size * 2 + PAD);
47 data = malloc(data_size);
48 verify = malloc(data_size * BLK_COUNT + HEADER + PAD);
49 for (i = 0; i < data_size / sizeof(int); i++)
52 MPI_Type_create_hindexed_block(BLK_COUNT, data_size, disp, MPI_BYTE, &file_type);
53 MPI_Type_commit(&file_type);
55 MPI_Type_create_hvector(BLK_COUNT, data_size, 0, MPI_BYTE, &mem_type);
56 MPI_Type_commit(&mem_type);
61 CHECK(MPI_File_open(MPI_COMM_WORLD, filename,
62 MPI_MODE_RDWR | MPI_MODE_CREATE | MPI_MODE_DELETE_ON_CLOSE,
63 MPI_INFO_NULL, &fh) != 0);
65 CHECK(MPI_File_set_view(fh, HEADER, MPI_BYTE, file_type, "native", MPI_INFO_NULL));
67 /* write everything */
68 CHECK(MPI_File_iwrite_at_all(fh, 0, data, 1, mem_type, &request));
69 MPI_Wait(&request, &status);
72 CHECK(MPI_File_set_view(fh, 0, MPI_BYTE, MPI_BYTE, "native", MPI_INFO_NULL));
73 CHECK(MPI_File_iread_at_all(fh, 0,
74 verify, (HEADER + PAD + BLK_COUNT * DATA_SIZE) / sizeof(int),
76 MPI_Wait(&request, &status);
78 /* header and block padding should have no data */
79 for (i = 0; i < (HEADER + PAD) / sizeof(int); i++) {
82 fprintf(stderr, "expected 0, read %d\n", verify[i]);
85 /* blocks are replicated */
86 for (j = 0; j < BLK_COUNT; j++) {
87 for (k = 0; k < (DATA_SIZE / sizeof(int)); k++) {
88 if (verify[(HEADER + PAD) / sizeof(int) + k + j * (DATA_SIZE / sizeof(int))]
91 fprintf(stderr, "expcted %d, read %d\n", data[k],
92 verify[(HEADER + PAD) / sizeof(int) + k + j * (DATA_SIZE / sizeof(int))]);
100 MPI_Type_free(&mem_type);
101 MPI_Type_free(&file_type);
104 printf(" No Errors\n");