Ralph,
you can reproduce this with master by manually creating a cpuset with
less cores than available,
and invoke mpirun with -bind-to core from within the cpuset.
i made PR 904 https://github.com/open-mpi/ompi/pull/904
Brice,
can you please double check the hwloc_bitmap_isincluded invokati
The usual way to override the C compiler is to invoke configure like this:
./configure CC=nameofcc
Regards, Thomas
smime.p7s
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Thanks Gilles!!
On Wed, Sep 16, 2015 at 9:21 PM, Gilles Gouaillardet
wrote:
> Ralph,
>
> you can reproduce this with master by manually creating a cpuset with less
> cores than available,
> and invoke mpirun with -bind-to core from within the cpuset.
>
> i made PR 904 https://github.com/open-mp
Hi all,
I’m currently trying to use MPI within a Python extension (written in C++). I
was able to compile the extension and import it correctly, but as soon as I run
the function, which contains the MPI code, I get the following error:
```
[aia256:15841] mca: base: component_find: unable to ope
Short version:
The easiest way to do this is to configure your Open MPI installation with
--disable-dlopen.
More detail:
Open MPI uses a bunch of plugins for its functionality. When you dlopen libmpi
in a private namespace (like Python does), and then libmpi tries to dlopen its
plugins, the
FYI, you can also see what they have done in mpi4py to by-pass this
problem.
I would actually highly recommend you to use mpi4py rather than
implementing this from scratch your-self ;)
2015-09-17 15:21 GMT+00:00 Jeff Squyres (jsquyres) :
> Short version:
>
> The easiest way to do this is to confi
Thanks for the quick answer!
I have a few questions now:
1. Are there any downsides of using —disable-dlopen?
2. Are there any other options? We might not be able to change MPI
installation, when this is running on a supercomputer.
Joel
On 17 Sep 2015, at 17:21, Jeff Squyres (jsquyres) wrote:
On Sep 17, 2015, at 11:44 AM, Joel Hermanns wrote:
>
> Thanks for the quick answer!
Be sure to see Nick's answer, too -- mpi4py is a nice package.
> I have a few questions now:
>
> 1. Are there any downsides of using —disable-dlopen?
You won't be able to add or remove plugins in the filesyste
Hi all,
I wanted to setup a 3-node ring network, each connects to the other 2 using
2 Ethernet ports directly without a switch/router.
The interface configurations could be found in the following picture.
https://www.dropbox.com/s/g75i51rrjs51b21/mpi-graph%20-%20New%20Page.png?dl=0
I've used *i
> FYI, you can also see what they have done in mpi4py to by-pass this problem.
Could you elaborate on this or give me some pointer to other resources?
> I would actually highly recommend you to use mpi4py rather than implementing
> this from scratch your-self ;)
I fully agree that it is a bad
On 17 September 2015 at 18:56, Jeff Squyres (jsquyres)
wrote:
> On Sep 17, 2015, at 11:44 AM, Joel Hermanns wrote:
>>
>> Thanks for the quick answer!
>
> Be sure to see Nick's answer, too -- mpi4py is a nice package.
>
>> I have a few questions now:
>>
>> 1. Are there any downsides of using —disa
Depending on your exact usage and the data contained in the CDF-5 files I
guess netcdf4-python would work for reading the files (if the underlying
netcdf library is compiled against pnetcdf).
However, this will not immediately yield mpi features. Yet, reading
different segments of files could be ma
Shang,
can you please run
mpirun --version
i cannot find the ompi version you are running based on the git hash you
reported
as a temporary workaround, you can do minimal tcp routing :
on the three nodes
1) run
sysctl -w net.ipv4.ip_forward=1
2) route the other nodes interface not on the same
Hi Team
I am trying to use the MPI to do some test and study on the C/R enabled
debugging. Professor Josh Hursey said that the feature never made it into a
release so it was only ever available on the trunk, However , since that time
the C/R functionality has fallen into disrepair. It is mos
I believe that the 1.6 series was the last to support C/R - you can find it
on our web site.
http://www.open-mpi.org/software/ompi/v1.6/
HTH
Ralph
On Thu, Sep 17, 2015 at 6:42 PM, gzzh...@buaa.edu.cn
wrote:
> Hi Team
> I am trying to use the MPI to do some test and study on the C/R enabled
>
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