Re: IPoIB performance

From: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
To: "Atchley, Scott" <atchleyes-1Heg1YXhbW8@public.gmane.org>
Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: IPoIB performance
Date: Wed, 5 Sep 2012 20:26:20 +0000	[thread overview]
Message-ID: <00000139981cb155-9e2c4747-af8f-4fe2-8c61-a6f40339dcf9-000000@email.amazonses.com> (raw)
In-Reply-To: <F90894CF-B55C-4AF7-845C-279FDF44351E-1Heg1YXhbW8@public.gmane.org>

On Wed, 5 Sep 2012, Atchley, Scott wrote:

> > Hmmm... You are running an old kernel. What version of OFED do you
> > use?
>
> Hah, if you think my kernel is old, you should see my userland
> (RHEL5.5). ;-)

My condolences.

> Does the version of OFED impact the kernel modules? I am using the
> modules that came with the kernel. I don't believe that libibverbs or
> librdmacm are used by the kernel's socket stack. That said, I am using
> source builds with tags libibverbs-1.1.6 and v1.0.16 (librdmacm).

OFED includes kernel modules which provides the drivers that you need.
Installing a new OFED release on RH5 is possible and would give you up to
date drivers. Check with RH: They may have them somewhere easy to install
for your version of RH.

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