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BEGIN:VEVENT
DTSTAMP:20211207T054757Z
LOCATION:227-228
DTSTART;TZID=America/Chicago:20211116T110000
DTEND;TZID=America/Chicago:20211116T113000
UID:submissions.supercomputing.org_SC21_sess149_pap225@linklings.com
SUMMARY:Linux vs. Lightweight Multi-Kernels for High-Performance Computing
 : Experiences at Pre-Exascale
DESCRIPTION:Paper\n\nLinux vs. Lightweight Multi-Kernels for High-Performa
 nce Computing: Experiences at Pre-Exascale\n\nGerofi, Tarumizu, Zhang, Oka
 moto, Takagi...\n\nThe long standing consensus in the High-Performance Com
 puting (HPC) Operating Systems (OS) community is that lightweight kernel-b
 ased OSes (LWKs) have the potential to outperform Linux at extreme scale. 
 To explore if LWKs live up to their expectation we developed IHK/McKernel,
  a lightweight multi-kernel OS designed for HPC, and deployed it on two hi
 gh-end supercomputers to compare its performance against Linux. Oakforest-
 PACS, an Intel Xeon Phi-based supercomputer, runs a moderately tuned Linux
  distribution. Fugaku is based on Fujitsu's A64FX CPU that runs a highly t
 uned Linux environment.\n\nWe discuss some of the recent developments in o
 ur OS and provide a detailed description on the challenges of tuning Fugak
 u's Linux for HPC.  While in a moderately tuned environment McKernel signi
 ficantly outperforms Linux, on Fugaku we observe an average of 4% speedup 
 (across all our experiments), with only a few exceptions where the LWK out
 performs Linux by up to 25%.\n\nTag: Performance, State of the Practice\n\
 nRegistration Category: Tech Program Reg Pass
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