Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: Re: [OMPI users] SM btl slows down bandwidth?
From: Ron Brightwell (rbbrigh_at_[hidden])
Date: 2008-08-13 11:46:34


> [...]
>
> MPICH2 manages to get about 5GB/s in shared memory performance on the
> Xeon 5420 system.

Does the sm btl use a memcpy with non-temporal stores like MPICH2?
This can be a big win for bandwidth benchmarks that don't actually
touch their receive buffers at all...

-Ron