ok, but just to be able to construct a test case, basically what you are
doing is
MPI_File_write_all_begin (fh, NULL, 0, some datatype);
MPI_File_write_all_end (fh, NULL, &status),
is this correct?
Thanks
Edgar
On 7/8/2016 12:19 PM, Eric Chamberland wrote:
Hi,
On 08/07/16 12:52 PM, Edgar Gabriel wrote:
The default MPI I/O library has changed in the 2.x release to OMPIO for
ok, I am now doing I/O on my own hard drive... but I can test over NFS
easily. For Lustre, I will have to produce a reduced example out of our
test suite...
most file systems. I can look into that problem, any chance to get
access to the testsuite that you mentioned?
Yikes! Sounds interesting, but difficult to realize... Our in-house
code is not public... :/
I however proposed (to myself) to add a nightly compilation of openmpi
(see http://www.open-mpi.org/community/lists/users/2016/06/29515.php) so
I can report problems before releases are made...
Anyway, I will work on the little script to automate the
MPI+PETSc+InHouseCode combination so I get give you a feedback as soon
as you will propose me to test a patch...
Hoping this will be enough convenient for you...
Thanks!
Eric
Thanks
Edgar
On 7/8/2016 11:32 AM, Eric Chamberland wrote:
Hi,
I am testing for the first time the 2.X release candidate.
I have a segmentation violation using MPI_File_write_all_end(MPI_File
fh, const void *buf, MPI_Status *status)
The "special" thing, may be that in the faulty test cases, there are
processes that haven't written anything, so they a a zero length buffer,
so the second parameter (buf) passed is a null pointer.
Until now, it was a valid call, has it changed?
Thanks,
Eric
FWIW: We are using our test suite (~2000 nightly tests) successfully
with openmpi-1.{6,8,10}.* and MPICH since many years...
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--
Edgar Gabriel
Associate Professor
Parallel Software Technologies Lab http://pstl.cs.uh.edu
Department of Computer Science University of Houston
Philip G. Hoffman Hall, Room 524 Houston, TX-77204, USA
Tel: +1 (713) 743-3857 Fax: +1 (713) 743-3335
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