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DTSTAMP:20260629T045211Z
UID:57f24b70-7405-4169-a5cd-1a93d81c52ad
DTSTART:20151210T093000Z
DTEND:20151211T173000Z
DESCRIPTION:Please note:  This course takes place in Oxford.\n\nAlthough t
 he course uses ARCHER as a platform for the exercises\, and mainly uses th
 e MPI-IO library and the Lustre parallel filesystem for specific examples\
 , most of the IO concepts and performance considerations are applicable to
  almost any parallel system.\n\nOne of the greatest challenges to running 
 parallel applications onlarge numbers of processors is how to handle file 
 IO: standard IO routinesare not designed with parallelism in mind. Paralle
 l file systems such as Lustre are optimised for large data transfers\, and
  performance can be far from optimal if many files are opened at once.\n\n
 The IO part of the MPI standard gives programmers access to efficient para
 llel IO in a portable fashion. However\, there are a large number of diffe
 rent routines available and some can be difficult to use in practice. Desp
 ite its apparent complexity\, MPI-IO adopts a very straightforward high-le
 vel model. If used correctly\, almost all the complexities of aggregating 
 data from multiple processes can be dealt with automatically by the librar
 y.\n\nThe first day of the course will cover the MPI-IO standard\, develop
 ing IO routines for a regular domain decomposition example. It will also b
 riefly cover higher-level standards such as HDF5 and NetCDF.\n\nThe second
  day will concentrate on ARCHER\, covering how to configure the Lustre fil
 e system for best performance and how to tune the Cray MPI-IO library. Cas
 e studies from real codes will also be presented.\n\nPrerequisites: The co
 urse assumes a good understanding of basic MPI programming in Fortran\, C 
 or C++. Knowledge of MPI derived datatypes would be useful but not essenti
 al.\n\nhttps://events.prace-ri.eu/event/445/
SUMMARY:Efficient Parallel IO on ARCHER @ EPCC at Oxford
URL;VALUE=URI:https://events.prace-ri.eu/event/445/
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