Hello Petsc Developers, I have a predominantly Petsc application but for simplicity it uses a very few MPI_AllReduce calls. I am finding that the MPI_AllReduce operations are sometimes causing problems (appears to be semaphore time outs) if the interprocess communication is slow. I never have any problem with the Petsc operations. Is it reasonable that Petsc would be more robust that MPI_AllReduce?
Also, is the VecScatterCreateToAll set of operations the best way to replace the MPI_AllReduce? Thanks for any advice, Rob -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111108/a7bc28b3/attachment.htm>
