[OMPI users] problem about mpirun on two nodes

Hi all I encountered a problem about mpirun and SSH when using OMPI 1.10.0 compiled with gcc, running on centos7.2. When I execute mpirun on my 2 node cluster, I get the following errors pasted below. [douraku@master home]$ mpirun -np 12 a.out Permission denied (publickey,gssapi-keyex,gssapi-w

Re: [OMPI users] The effect of --bind-to in the presence of PE=N in --map-by

Thank you, Ralph for the detailed explanation. On Thu, May 19, 2016 at 7:36 PM, Ralph Castain wrote: > No!! A “slot” is purely a bookkeeping construct that schedulers use to > tell you how many procs you can run. It has nothing to do with a core or > any other physical resource. > > It is true t

Re: [OMPI users] Possible (minor) bug?

I just fixed it today - waiting for Nathan to provide one more element before committing > On May 21, 2016, at 1:17 PM, dpchoudh . wrote: > > Hello all > > I have started noticing this message since yesterday on builds from the > master branch. Any simple mpirun command, such as: > > mpirun

[OMPI users] Possible (minor) bug?

Hello all I have started noticing this message since yesterday on builds from the master branch. Any simple mpirun command, such as: mpirun -np 2 -hostfile ~/hostfile -mca btl self,tcp hostname generates a warning/error like this: *Duplicate cmd line entry mca* The hostfile, in my case, is jus

Re: [OMPI users] MPI_Put/Get with many nested derived type

16d9f71d01cc should provide a fix for this issue. George. On Sat, May 21, 2016 at 12:08 PM, Akihiro Tabuchi < tabu...@hpcs.cs.tsukuba.ac.jp> wrote: > Hi Gilles, > > Thanks for your quick response and patch. > > After applying the patch to 1.10.2, the test code and our program which > uses nes

Re: [OMPI users] [slightly off topic] hardware solutions with monetary cost in mind

Best performance per dollar for CPU systems is usually one generation past mid core count single socket system, such as Intel Haswell or Broadwell Core i7. Might get lucky and find eg 12-core Xeon processors cheap now. If you want lots of MPI ranks per dollar, look at Intel Knights Corner Xeon Phi

[OMPI users] fortran problem when mixing "use mpi" and "use mpi_f08" with gfortran 5

Hi, in the last few days I ported my entire fortran mpi code to "use mpif_08". You really did a great job with this interface. However, since HDF5 still uses integers to handle communicators, I have a module where I still use "use mpi", and with gfortran 5.3.0 and openmpi-1.10.2 I got some errors.

Re: [OMPI users] MPI_Put/Get with many nested derived type

Hi Gilles, Thanks for your quick response and patch. After applying the patch to 1.10.2, the test code and our program which uses nested hvector type ran without error. I hope the patch will be applied to future releases. Regards, Akihiro On 2016/05/21 23:15, Gilles Gouaillardet wrote: Here

Re: [OMPI users] MPI_Put/Get with many nested derived type

Here are attached two patches (one for master, one for v1.10) please consider these as experimental ones : - they cannot hurt - they might not always work - they will likely allocate a bit more memory than necessary - if something goes wrong, it will hopefully be caught soon enough in a new assert

Re: [OMPI users] MPI_Put/Get with many nested derived type

Tabuchi-san, thanks for the report. this is indeed a bug i was able to reproduce on my linux laptop (for some unknown reasons, there is no crash on OS X ) ompi_datatype_pack_description_length malloc 88 bytes for the datatype description, but 96 bytes are required. this causes a memory corruptio

[OMPI users] MPI_Put/Get with many nested derived type

Hi, At OpenMPI 1.10.2, MPI_Type_free crashes with a many nested derived type after using MPI_Put/Get with the datatype as target_datatype. The test code is attached. In the code, MPI_Type_free crashes if N_NEST >= 4. This problem occurs at OpenMPI 1.8.5 or later. There is no problem at OpenMPI 1