[ofa-general] NFS-RDMA (OFED1.4) with standard distributions ?

[Ciesielski, Frederic (EMEA HPC&OSLO CC)]

That's great, thanks.

I ran some tests with the 2.6.27 kernel as server and client, and basically it works fine.

I could not find yet any situation where NFS-RDMA would outperform NFS/IPoIB, at least when you compare apples to apples (same clients, same server, same protocol, and not just write to/read from the caches), and it even seems to have severe performance issues for reading with files larger than the memory size of the client and the server.
Hopefully this will improve when more users will be able to give valuable feedback...

Fred.

-----Original Message-----
From: Jeff Becker [mailto:Jeffrey.C.Becker at nasa.gov]
Sent: Saturday, 08 November, 2008 22:35
To: Ciesielski, Frederic (EMEA HPC&OSLO CC)
Cc: general at lists.openfabrics.org
Subject: Re: [ofa-general] NFS-RDMA (OFED1.4) with standard distributions ?

Ciesielski, Frederic (EMEA HPC&OSLO CC) wrote:
> Is there any chance that the new NFS-RDMA features coming with OFED
> 1.4 work with standard and current distributions, like RHEL5, SLES10 ?
Not yet, but I'm working on it. I intend for NFSRDMA to work on 2.6.27 and 2.6.26 for OFED 1.4. The RHEL5 and SLES10 backports will likely be done for OFED 1.4.1. Thanks.

-jeff

> Did anybody test this, or would pretend it is supposed to work ?
>
> I mean without building a 2.6.27 or equivalent kernel on top of it,
> keeping almost full support from the vendors.
>
> Enhanced kernel modules may not be sufficient to work around the
> limitations of old kernels...
>
>
>
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