thank you for the report and the code, I will look into this. What file
system is that occurring on?
Until I find the problem, note that you could switch to back to the
previous parallel I/O implementation (romio) by providing that as a
parameter to your mpirun command, e.g.
mpirun --mca io
I am using MPI_FILE_WRITE_AT to print out the timings of subroutines in a big
Fortran code. I have noticed since upgrading to Open MPI 2.1.1 that sometimes
the file to be written is corrupted. Each MPI process is supposed to write out
a character string that is 159 characters in length, plus a
