[mpich-discuss] Infiniband support on Windows

[Jayesh Krishna]

Hi,
 
>> 1) Does the latest Windows version of MPICH-2 support IB channel
selection ? ...
 
  No. The latest version of MPICH2 does not have support for IB. Support
for IB on windows is slated for a future release.
 
>> 2) Does this MPICH-2 support "One Sided Communication" with  ...
 
  It should. However since MPICH2 on windows does not have support for IB
we currently don't take advantage of the RDMA features of IB.
 
  If you want to use IB you have two options,
 
# Use MSMPI (Microsoft's MPI -
http://msdn.microsoft.com/en-us/library/bb524831(VS.85).aspx)
# Use Intel's MPI (use rdma channel -
http://software.intel.com/en-us/intel-mpi-library/)
 
(PS: Both Intel's MPI and Microsoft's MPI are derived from MPICH2)
 
Regards,
Jayesh


  _____  

From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Balasingam, Sashi
Sent: Thursday, July 02, 2009 11:52 AM
To: mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] Infiniband support on Windows



I am migrating an application that currently uses MVAPICH on Linux, to
MPICH2 on Windows 2008 Server. The system has multiple nodes connected by
a Infiniband (IB) network (using Mellanox HCA). 

Got few quick questions - 

1) Does the latest Windows version of MPICH-2 support IB channel selection
?... if so, does the setting "mpiexec -env MPICH2_CHANNEL ib ...." is all
that's required to get that working (I already have the IB drivers
installed)


2) Does this MPICH-2 support "One Sided Communication" with  "Passive"
target synchronization ( using MPI_lock( ), MPI_unlock( ) calls ), and if
so, does it take advantage of the RDMA feature of IB ?

Thanks in advance, 
Sashi 

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