[Beowulf] Fwd: RHEL7 kernel update for L1TF vulnerability breaks RDMA

Peter Kjellström cap at nsc.liu.se
Tue Sep 11 05:35:20 PDT 2018

On Tue, 11 Sep 2018 14:12:06 +0100
John Hearns via Beowulf <beowulf at beowulf.org> wrote:

> That raises a good point. Someone was asking recently about RDAM
> availability on AWS.
> Other storage setups, eg SpectrumScale operate over RDMA
> What is a sure-fire test for 'ís RDMA working"
> I bet there is a simple utility and I will kick myself.. but worth

One of the simpler ways that include an actual connection (needed to
hit this bug) is ib_write_bw. It needs to be run between two hosts

To be specific, this tests (part of) verbs. Applications may depend on
other upper level protocols YMMV...


Sent from my Android device with K-9 Mail. Please excuse my brevity.
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