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DTSTAMP:20260202T201259Z
LOCATION:Second Floor Atrium
DTSTART;TZID=America/Chicago:20251121T080000
DTEND;TZID=America/Chicago:20251121T120000
UID:submissions.supercomputing.org_SC25_sess620_post227@linklings.com
SUMMARY:Between the NIC and a Hard Place: Evaluating 400 Gb/s Ethernet for
  HPC Data Transfers
DESCRIPTION:Adelle Ferris, Evelyn Needham, Nikole Grandez, Jesse Martinez,
  and Doug Egan (Los Alamos National Laboratory (LANL))\n\nThe readiness of
  new 400Gbps Ethernet hardware was evaluated for potential production use 
 in high performance computing (HPC) environments over a local area network
  (LAN) and a wide area network (WAN). The approach explored a range of dat
 a movement strategies, including parallelized transfer tools, in which war
 p-speed data transfer (WDT) yielded optimal results. Furthermore, communic
 ation protocols were tested, such as Transmission Control Protocol (TCP) a
 nd remote direct memory access (RDMA) over converged Ethernet (RoCE). Perf
 ormance tests were conducted on bandwidth and latency to understand potent
 ial bottlenecks. Stress tests were run in Message Passing Interface (MPI) 
 and other HPC-relevant environments. The research examined whether a 400Gb
 ps pipeline can be saturated using current tools and methods, both locally
  and across geographically distributed environments. The findings provided
  recommendations for enhancing high-throughput data workflows in HPC setti
 ngs.\n\nTag: Research & ACM SRC Posters\n\nRegistration Category: Technica
 l Program Reg Pass\n\nSession Chairs: Kento Sato (RIKEN Center for Computa
 tional Science (R-CCS)); Anja Gerbes (Georg-August-Universität Göttingen);
  and Chris Schlipalius (Pawsey Supercomputing Research Centre; Commonwealt
 h Scientific and Industrial Research Organisation (CSIRO), Australia)\n\n
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