Hello, On 04/08/2013 04:08 PM, Thomas Jahns wrote: > a colleague of mine has investigated a difficult problem we traced to OpenMPI > giving incorrectly delivered data on some struct datatypes which use specific > offsets (on the stack in our case but the problem can be reproduced when using > specifically chosen slices of an array). Our library is used to aggregate > several MPI communications in a generic and transparent manner and therefore > we > need to be able to handle any combination of properly aligned offsets and > component types. > > The attached example program contains the necessary steps to reproduce the > problem: > > 1. create the struct types in question > 2. send/recv the data > 3. compare to reference (said comparison works on several MPICH2 versions)
our IT service provider has applied the patch to openmpi 1.6.4 and the C test-case I provided now works but the original code which uses a bigger number of struct dataypes still fails. Has anyone already discovered a potential problem with the fix provided in r28319? I'm asking because developing the C test case is quite some amount of work and is not easily reproducible with every Fortran compiler because it depends on the stack layout. Regards, Thomas -- Thomas Jahns DKRZ GmbH, Department: Application software Deutsches Klimarechenzentrum Bundesstraße 45a D-20146 Hamburg Phone: +49-40-460094-151 Fax: +49-40-460094-270 Email: Thomas Jahns <ja...@dkrz.de>
smime.p7s
Description: S/MIME Cryptographic Signature
