[gpfsug-discuss] nsdperf crash testing RDMA between Power BE and Intel nodes

[Scott D]

I have run nsdperf with RDMA enabled against an ESS ppc-64 server without
any problems. I don't have access to that system at the moment, and it was
running a fairly old (4.1.x) version of GPFS, not that that should matter
for nsdperf unless that source code has changed since 4.1.

Scott Denham
Staff Engineer
Cray, Inc

On Tue, Oct 24, 2017 at 11:49 AM, Uwe Falke <UWEFALKE at de.ibm.com> wrote:

> Hi,
> I am about to run nsdperf for testing the IB fabric in a new system
> comprising ESS (BE) and Intel-based nodes.
> nsdperf crashes reliably when invoking ESS nodes and x86-64 nodes in one
> test using RDMA:
>
> client          server          RDMA
> x86-64          ppc-64          on              crash
> ppc-64          x86-64          on              crash
> x86-64          ppc-64          off             success
> x86-64          x86-64          on              success
> ppc-64          ppc-64          on              success
>
> That implies that the nsdperf RDMA test might struggle with BE vs LE.
> However, I learned from a talk given at a GPFS workshop in Germany in 2015
> that RDMA works between Power-BE and Intel boxes. Has anyone made similar
> or contrary experiences? Is it an nsdperf issue or more general (I have
> not yet attempted any GPFS mount)?
>
>
>
> Mit freundlichen Grüßen / Kind regards
>
>
> Dr. Uwe Falke
>
> IT Specialist
> High Performance Computing Services / Integrated Technology Services /
> Data Center Services
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