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UID:submissions.supercomputing.org_SC25_sess620_post130@linklings.com
SUMMARY:SRAP: Sender-Side Receiver-Aware Port Selection for High-Speed Mul
 ti-Flow TCP
DESCRIPTION:Shingo Hattori and Osamu Tatebe (University of Tsukuba)\n\nAch
 ieving 400 Gbps requires aggregating multiple flows across cores rather th
 an pushing single-flow limits. However, with 16×25 Gbps TCP flows, random 
 ephemeral ports cause receiver-side packet steering (RSS) to concentrate f
 lows on single CPU cores, degrading throughput from 25 Gbps to below 5 Gbp
 s.\n\nUnlike receiver-side solutions that suffer from cache misses and sta
 te migration overhead, SRAP transparently controls source ports at senders
 , ensuring collision-free mapping without runtime remapping costs or appli
 cation modification.\n\nWith 16×25 Gbps flows, random assignment achieves 
 optimal distribution with probability 1.04\%, causing throughput to vary f
 rom 44.8 to 395 Gbps, while our approach consistently delivers 23.3-25 Gbp
 s per flow with guaranteed 1:1 flow-to-core mapping.\n\nTag: Research & AC
 M SRC Posters\n\nRegistration Category: Technical Program Reg Pass\n\nSess
 ion Chairs: Kento Sato (RIKEN Center for Computational Science (R-CCS)); A
 nja Gerbes (Georg-August-Universität Göttingen); and Chris Schlipalius (Pa
 wsey Supercomputing Research Centre; Commonwealth Scientific and Industria
 l Research Organisation (CSIRO), Australia)\n\n
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