Hi Howard,
Thanks for your quick reply and your suggestions. I exported both
variables as you suggested but neither has any impact. The error message
stays the same with both env variables set. Is there any other way to
get more information from OpenMPI?
Sorry for not mentioning my OS. I'm running on a Linux Mint 18.1 with
stock kernel 4.8.0-36.
Joseph
On 02/18/2017 05:18 PM, Howard Pritchard wrote:
Hi Joseph
What OS are you using when running the test?
Could you try running with
export OMPI_mca_osc=^pt2pt
and
export OMPI_mca_osc_base_verbose=10
This error message was put in to this OMPI release because this part
of the code has known problems when used multi threaded.
Joseph Schuchart <schuch...@hlrs.de <mailto:schuch...@hlrs.de>>
schrieb am Sa. 18. Feb. 2017 um 04:02:
All,
I am seeing a fatal error with OpenMPI 2.0.2 if requesting support for
MPI_THREAD_MULTIPLE and afterwards creating a window using
MPI_Win_create. I am attaching a small reproducer. The output I get is
the following:
```
MPI_THREAD_MULTIPLE supported: yes
MPI_THREAD_MULTIPLE supported: yes
MPI_THREAD_MULTIPLE supported: yes
MPI_THREAD_MULTIPLE supported: yes
--------------------------------------------------------------------------
The OSC pt2pt component does not support MPI_THREAD_MULTIPLE in this
release.
Workarounds are to run on a single node, or to use a system with
an RDMA
capable network such as Infiniband.
--------------------------------------------------------------------------
[beryl:10705] *** An error occurred in MPI_Win_create
[beryl:10705] *** reported by process [2149974017,2]
[beryl:10705] *** on communicator MPI_COMM_WORLD
[beryl:10705] *** MPI_ERR_WIN: invalid window
[beryl:10705] *** MPI_ERRORS_ARE_FATAL (processes in this communicator
will now abort,
[beryl:10705] *** and potentially your MPI job)
[beryl:10698] 3 more processes have sent help message
help-osc-pt2pt.txt
/ mpi-thread-multiple-not-supported
[beryl:10698] Set MCA parameter "orte_base_help_aggregate" to 0 to see
all help / error messages
[beryl:10698] 3 more processes have sent help message
help-mpi-errors.txt / mpi_errors_are_fatal
```
I am running on a single node (my laptop). Both OpenMPI and the
application were compiled using GCC 5.3.0. Naturally, there is no
support for Infiniband available. Should I signal OpenMPI that I am
indeed running on a single node? If so, how can I do that? Can't
this be
detected by OpenMPI automatically? The test succeeds if I only request
MPI_THREAD_SINGLE.
OpenMPI 2.0.2 has been configured using only
--enable-mpi-thread-multiple and --prefix configure parameters. I am
attaching the output of ompi_info.
Please let me know if you need any additional information.
Cheers,
Joseph
--
Dipl.-Inf. Joseph Schuchart
High Performance Computing Center Stuttgart (HLRS)
Nobelstr. 19
D-70569 Stuttgart
Tel.: +49(0)711-68565890
Fax: +49(0)711-6856832
E-Mail: schuch...@hlrs.de <mailto:schuch...@hlrs.de>
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--
Dipl.-Inf. Joseph Schuchart
High Performance Computing Center Stuttgart (HLRS)
Nobelstr. 19
D-70569 Stuttgart
Tel.: +49(0)711-68565890
Fax: +49(0)711-6856832
E-Mail: schuch...@hlrs.de
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users mailing list
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