[gpfsug-discuss] 100G RoCEE and Spectrum Scale Performance

Douglas Duckworth dod2014 at med.cornell.edu
Tue Mar 6 18:23:41 GMT 2018


Hi

We are currently running Spectrum Scale over FDR Infiniband.  We plan on
upgrading to EDR since I have not really encountered documentation saying
to abandon the lower-latency advantage found in Infiniband.  Our workloads
generally benefit from lower latency.

It looks like, ignoring GPFS, EDR still has higher throughput and lower
latency when compared to 100G RoCEE.

http://sc16.supercomputing.org/sc-archive/tech_poster/poster_files/post149s2-file3.pdf

However, I wanted to get feedback on how GPFS performs with 100G Ethernet
instead of FDR.

Thanks very much!

Doug

Thanks,

Douglas Duckworth, MSc, LFCS
HPC System Administrator
Scientific Computing Unit
Physiology and Biophysics
Weill Cornell Medicine
E: doug at med.cornell.edu
O: 212-746-6305
F: 212-746-8690
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