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DTSTART:19700308T020000
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DTSTAMP:20210402T160558Z
LOCATION:Track 4
DTSTART;TZID=America/New_York:20201112T171500
DTEND;TZID=America/New_York:20201112T174000
UID:submissions.supercomputing.org_SC20_sess210_ws_indis106@linklings.com
SUMMARY:An Evaluation of Ethernet Performance for Scientific Workloads
DESCRIPTION:SCinet, Workshop\n\nAn Evaluation of Ethernet Performance for 
 Scientific Workloads\n\nKenny, Wilke, Ulmer, Baker, Knight...\n\nPriority-
 based Flow Control (PFC), RDMA over Converged Ethernet (RoCE) and Enhanced
  Transmission Selection (ETS) are three enhancements to Ethernet networks 
 which allow increased performance and may make Ethernet attractive for sys
 tems supporting a diverse scientific workload. We constructed a 96-node te
 stbed cluster with a 100 Gb/s Ethernet network configured as a tapered fat
  tree. Tests representing important network operating conditions were comp
 leted and we provide an analysis of these performance results. RoCE runnin
 g over a PFC-enabled network was found to significantly increase performan
 ce for both bandwidth-sensitive and latency-sensitive applications when co
 mpared to TCP. Additionally, a case study of interfering applications show
 ed that ETS can prevent starvation of network traffic for latency-sensitiv
 e applications running on congested networks. We did not encounter any not
 able performance limitations for our Ethernet testbed, but we found that p
 ractical disadvantages still tip the balance towards traditional HPC netwo
 rks unless a system design is driven by additional external requirements.\
 n\nTag: Big Data, Data Analytics, Compression, and Management, Datacenter,
  Networks, Performance/Productivity Measurement and Evaluation, SCinet, So
 ftware-defined networking\n\nRegistration Category: Workshop Reg Pass
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