Re: [OMPI users] readv failed How to debug?

John, by "user", i meant MPI user (e.g. your application) as opposed to "OpenMPI developer's bug" As previously explained, the coll/tuned module is known to be broken in some cases (e.g. different but compatible signatures), so the --mca coll ^tuned option simply disables this module, so

Re: [OMPI users] readv failed How to debug?

Thanks, Jeff. I'll let you know what happens. Best.John On 2/16/16 10:19 AM, Jeff Squyres (jsquyres) wrote: -Original Message- From: JR Cary Reply: Open MPI Users Date: February 16, 2016 at 9:39:23 AM To: us...@open-mpi.org

Re: [OMPI users] readv failed How to debug?

-Original Message- From: JR Cary Reply: Open MPI Users Date: February 16, 2016 at 9:39:23 AM To: us...@open-mpi.org Subject:  Re: [OMPI users] readv failed How to debug? > Thanks, Gilles, > > Yes, this binary was built a few

Re: [OMPI users] difference between OpenMPI - intel MPI -- how to understand where\why

Which one is producing correct (or at least reasonable) results? Are both results correct? Do you have ways of assessing correctness of your results? On February 16, 2016 at 5:19:16 AM, Diego Avesani (diego.aves...@gmail.com) wrote: Dear all, I have written an fortran-MPI code.

Re: [OMPI users] readv failed How to debug?

Hi Jeff, Thanks. Did you see my followup? The code is all written the same, e.g. SPMD. And it is just when I use a binary built at my institution and run it at another. ThxJohn On 2/16/16 6:35 AM, Jeff Squyres (jsquyres) wrote: John -- +1 on what Gilles said. The initial error says

Re: [OMPI users] readv failed How to debug?

Thanks, Gilles, Yes, this binary was built a few years ago. You mention a user error, but do you mean developer error? I.e., it would have to be in the code? What does "--mca coll ^tuned" do? ThxJohn On 2/15/16 4:03 PM, Gilles Gouaillardet wrote: John, the readv error is likely a

Re: [OMPI users] readv failed How to debug?

John -- +1 on what Gilles said. The initial error says that a broadcast message was truncated.  This likely indicates that someone is calling MPI_Bcast with a different size than its peers (it *could* indicate what Giles mentioned about different-but-supposed-to-be-compatible-datatypes, but

Re: [OMPI users] difference between OpenMPI - intel MPI -- how to understand where\why

On February 16, 2016 at 5:19:16 AM, Diego Avesani (diego.aves...@gmail.com) wrote: > Dear all, > > I have written an fortran-MPI code. > Usually, I compile it in MPI or in openMPI according to the cluster where > it runs. > Unfortunately, I get complitly a different result and I do not know

[OMPI users] difference between OpenMPI - intel MPI -- how to understand where\why

Dear all, I have written an fortran-MPI code. Usually, I compile it in MPI or in openMPI according to the cluster where it runs. Unfortunately, I get complitly a different result and I do not know why. Where could I look? Do you know why? Thanks Diego