[Beowulf] IPoIB failure

Christopher Samuel samuel at unimelb.edu.au
Tue Jan 27 14:24:39 PST 2015

On 24/01/15 01:29, Lennart Karlsson wrote:

> This reminds me of when we upgraded to SL-6.6 (approximately the same as
> CentOS-6.6 and RHEL-6.6).
> The new kernel we got, could not handle our IPoIB for storage traffic,
> which broke down within a few hours.

Interesting, we use GPFS over IPoIB and upgraded to RHEL 6.6 in early
November and haven't seen any issues at all (and with a lot of
bioinfomatics users we'd notice problems pretty quickly).

Is your IB running in connected mode or datagram mode?

We're in connected mode everywhere because of our BG/Q.

All the best,
 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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