FWIW, I tried this sample program on OMPI 1.6.x and 1.7.x, and it worked for me
on NFS.
On Nov 7, 2013, at 12:45 PM, Jeff Hammond wrote:
> That's a relatively old version of OMPI. Maybe try the latest
> release? That's always the safe bet since the issue might have been
> fixed already.
>
> I
Hi Steven, Dmytry
Not sure if this web page is still valid or totally out of date,
but there it goes anyway, in the hopes that it may help:
http://www.mcs.anl.gov/research/projects/mpi/mpich1-old/docs/install/node38.htm
On the other hand, one expert seems to dismiss NFS
for paralllel IO:
http:
That's a relatively old version of OMPI. Maybe try the latest
release? That's always the safe bet since the issue might have been
fixed already.
I recall that OMPI uses ROMIO so you might try to reproduce with MPICH
so you can report it to the people that wrote the MPI-IO code. Of
course, this mi
Not sure if this is related, but:
I've seen a case of performance degradation on NFS and Lustre when
writing NetCDF files. The reason was that the file was filled with a
loop writing one 4-byte record at once. Performance became close to
local hard drive, when I simply introduced buffering of reco
On Wed, Nov 16, 2011 at 03:52:05PM +, Kharche, Sanjay wrote:
>
> Dear All
>
> I am sure this issue has been discussed before on the forum, but I will
> appreciate your comments.
>
> I have a package that tries to do parallel file output using MPI_File_Write:
>
> /* Write to file. */
> mp
