I noticed you never checked the return code from your MPI_File_read
statement. If you had used your own mpi() function, it would state
something like this:
MPI_FILE_READ(116): Cannot read from a file opened with amode MPI_MODE_WRONLY
-david
| Hi, i have this program, that write the rank of a p
Hello Luís,
You opened the file with write-only mode which causes the subsequent read
to fail - although I do not know why the error checking fails to see that.
If you change MPI_MODE_WRONLY to MPI_MODE_RDWR then your code works fine.
-david
--
David Gunter
HPC-3: Parallel Tools Team
Los Alamos
Pathscale supports -O3 (at least as of the 3.1 line). Here are some
suggestions from the 3.2 Users Manual you may also want to try.
-david
If there are numerical problems with -O3 -OPT:Ofast, then try either of the
following:
-O3 -OPT:Ofast:ro=1
-O3 -OPT:Ofast:div_split=OFF
Note that ro
