int big_file_mpi_create(BigFile * bf, char * basename, MPI_Comm comm) {
if(comm == MPI_COMM_NULL) return 0;
int rank;
MPI_Comm_rank(comm, &rank);
int rt = big_file_create(bf, basename);
MPI_Barrier(comm);
return rt;
}
int main(int argc, char * argv[]) {
int opt;
while(-1 != (opt = getopt(argc, argv, "t:n:N:"))) {
switch(opt){
case 'N':
Nfile = atoi(optarg);
break;
case 't':
dtype = optarg;
break;
case 'n':
nmemb = atoi(optarg);
break;
default:
usage();
}
}
if(argc - optind < 3) {
usage();
}
argv += optind - 1;
BigFile bf = {0};
BigBlock bb = {0};
if(0 != big_file_create(&bf, argv[1])) {
fprintf(stderr, "failed to create file : %s\n", big_file_get_error_message());
return -1;
}
int Nfile;
int Ninput = argc - optind - 2;
size_t size[Nfile];
size_t total = 0;
int i;
for(i = 0; i < Ninput; i ++) {
struct stat st;
stat(argv[i + 3], &st);
total += st.st_size / dtype_itemsize(dtype) / nmemb;
}
for(i = 0; i < Nfile; i ++) {
}
if(0 != big_file_create_block(&bf, &bb, argv[2], dtype, nmemb, Nfile, fsize)) {
fprintf(stderr, "failed to create block: %s\n", big_file_get_error_message());
return -1;
}
for(i = 0; i < Nfile; i ++) {
FILE * fp = fopen
}
big_file_close(&bf);
return 0;
}
