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Thread: multithreaded MPI with infiniband (mvapich2?)
multithreaded MPI with infiniband (mvapich2?)
user name
 2008-01-02 19:58:16 

  


  

    Hi all (again) -

I just came to the realization that OpenMPI does not support a multithreaded model with infiniband.  I am looking into the openib-mvapich2, as mvapich appears to support both infiniband and multithreading simultaneously.  Unfortunately, I'm getting a blockage saying that it can't be used with the openib-userspace package.


Does anyone know of an easy way to resolve this? ; 
Thanks!
  Brian


  

  
  
   
     
    

  

    Re:  multithreaded MPI with infiniband
(mvapich2?) 
  


  

     country flaguser name
United States		
     2008-01-03 12:19:35
  


  

    
"Brian Budge" writes:
> 
> Hi all (again) -
> 
> I just came to the realization that OpenMPI does not
support a multithreaded
> model with infiniband.  I am looking into the
openib-mvapich2, as mvapich
> appears to support both infiniband and multithreading
simultaneously.
> Unfortunately, I'm getting a blockage saying that it
can't be used with the
> openib-userspace package.
> 
> Does anyone know of an easy way to resolve this?

My bad.
Fixed it.  Update your overlay.  You might have to
re-emerge
openib-userspace.  If so, sorry for the inconvenience.

-Bryan

-- 
gentoo-clustergentoo.org mailing list




  


  

    
  

  
  
   
     
    

  

    Re:  multithreaded MPI with infiniband
(mvapich2?)
  


  

     user name

     2008-01-03 12:28:53
  


  

    

  


  

    Hi Bryan -

Something strange is happening.  with --pretend, it seems that the blockage is gone, however, without it, I still get blockage:

burn openib-userspace # USE=rdma emerge -uDpv openib-mvapich2


These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N    ] sys-cluster/openib-mvapich2-1.0.1  USE="rdma threads -debug -large-cluster -medium-cluster" 0 kB [1]


Total: 1 package (1 new), Size of downloads: 0 kB
Portage tree and overlays:
 [0] /usr/portage
 [1] /usr/portage/local/layman/science
burn openib-userspace # USE=rdma emerge openib-mvapich2
Calculating dependencies... done!

[ebuild  N    ] sys-cluster/openib-mvapich2-1.0.1  USE="rdma threads -debug -large-cluster -medium-cluster" 
[blocks B     ] sys-cluster/openib-mvapich2 (is blocking sys-cluster/openib-userspace-1.2.5.1-r1
)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

For more information about Blocked Packages, please refer to the following
section of the Gentoo Linux x86 Handbook (architecture is irrelevant):


http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked

Sorry to be such a pain!
  Brian


On Jan 3, 2008 10:19 AM, Bryan Green < bryan.d.greennasa.gov">bryan.d.greennasa.gov&gt; wrote:


"Brian Budge"; writes:
&gt;
> Hi all (again) -
>
>; I just came to the realization that OpenMPI does not support a multithreaded
> model with infiniband.  I am looking into the openib-mvapich2, as mvapich

> appears to support both infiniband and multithreading simultaneously.
> Unfortunately, I'm getting a blockage saying that it can't be used with the
> openib-userspace package.
&gt;
> Does anyone know of an easy way to resolve this?


My bad.
Fixed it.  Update your overlay.  You might have to re-emerge
openib-userspace.  If so, sorry for the inconvenience.

-Bryan

--
 gentoo-clustergentoo.org">
gentoo-clustergentoo.org mailing list




  

  
  
   
     
    






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