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DTSTART:19700308T020000
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DTSTAMP:20190719T085744Z
LOCATION:HG F 3
DTSTART;TZID=Europe/Stockholm:20190613T144500
DTEND;TZID=Europe/Stockholm:20190613T151500
UID:submissions.pasc-conference.org_PASC19_sess130_msa153@linklings.com
SUMMARY:mpipin: Towards Portable Process Pinning for MPI Applications
DESCRIPTION:Minisymposium\nComputer Science and Applied Mathematics\n\nmpi
 pin: Towards Portable Process Pinning for MPI Applications\n\nGerofi\n\nAs
  architectural complexity of node resources in high-performance computing 
 (HPC) keeps increasing, topology aware process placement becomes utmost im
 portant for efficiently utilizing the underlying hardware. Although most M
 PI implementations provide interfaces to control process placement, existi
 ng APIs are fully implementation specific and non-standard solutions, lead
 ing to non-portable job scripts among different MPI environments. Furtherm
 ore, most of the existing APIs provide overly intricate and often redundan
 t process pinning mechanisms. To address these problems, we are developing
  mpipin, an MPI implementation agnostic process pinning tool that provides
  a simple, intuitive interface for deterministic resource assignment. The 
 talk describes mpipin's API, its topology aware design and implementation.
  Through experiments, we demonstrate its ability to provide identical proc
 ess pinning behaviour in Intel MPI, MVAPICH and Open MPI environments usin
 g the same command line invocation.
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