[gpfsug-discuss] does AFM support NFS via RDMA

Billich Heinrich Rainer (PSI) heiner.billich at psi.ch
Tue Jul 11 10:36:39 BST 2017


Hello,

We run AFM using NFS as transport between home and cache. Using IP-over-Infiniband we see a throughput between 1 and 2 GB/s. This is not bad but far from what a native IB link provides – 6GB/s . Does AFM’s nfs client on gateway nodes support NFS using RDMA? I would like to try.  Or should we try to tune nfs and the IP stack – I wonder if anybody got throughput above 2 GB/s using IPoIB and FDR between two nodes?

We can’t use a native gpfs multicluster mount – this links home and cache much too strong: If home fails cache will unmount the cache fileset – this is what I get from the manuals. 

We run spectrum scale 4.2.2/4.2.3 on Redhat 7.

Thank you,

Heiner Billich

--
Paul Scherrer Institut
Heiner Billich
WHGA 106
CH 5232  Villigen
056 310 36 02
 




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