[Beowulf] How to know if infiniband network works?
samuel at unimelb.edu.au
Wed Aug 2 16:13:36 PDT 2017
On 03/08/17 02:44, Faraz Hussain wrote:
> I have inherited a 20-node cluster that supposedly has an infiniband
> network. I am testing some mpi applications and am seeing no performance
> improvement with multiple nodes.
As you are using Open-MPI you should be able to tell it to only use IB
(and fail if it cannot) by doing this before running the application:
Out of interest, are you running it via a batch system of some sort?
All the best,
Christopher Samuel Senior Systems Administrator
Melbourne Bioinformatics - The University of Melbourne
Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
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