Split Collective I/O

MPI_File_write_all_begin(fh, buf, count, datatype);

for (i=0; i򒮨 i++) {

/* perform computation */

}

MPI_File_write_all_end(fh, buf, &status);

• A restricted form of nonblocking collective I/O

• Only one active nonblocking collective operation allowed at a time on a file handle

• Therefore, no request object necessary

Previous slide

Next slide

Back to first slide

View graphic version