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difx:difxmpi [2010/05/23 09:35]
walterbrisken
difx:difxmpi [2015/10/21 10:08] (current)
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 ==== Message Passing Interface (MPI) Issues ==== ==== Message Passing Interface (MPI) Issues ====
  
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 == OpenMPI == == OpenMPI ==
  
-A vast majority of known DiFX installations use OpenMPI (available at [[:www.openmpi.org|www.openmpi.org]]).  OpenMPI is in active development by many major corporations, research institutes, and universities.  It rather simply compiles and installs, making use of the GNU configuration tools.  OpenMPI makes use of a "modular component architecture" where various subsystems (schedulers, transport layer, ...) can each be tuned at run-time for a particular application.  Some mpirun options that have been employed by users of DiFX include+A vast majority of known DiFX installations use OpenMPI (available at [[configcode|www.openmpi.org]]).  OpenMPI is in active development by many major corporations, research institutes, and universities.  It rather simply compiles and installs, making use of the GNU configuration tools.  OpenMPI makes use of a "modular component architecture" where various subsystems (schedulers, transport layer, ...) can each be tuned at run-time for a particular application.  Some mpirun options that have been employed by users of DiFX include
  
   * ''--mca btl ^udapl,openib''   This option turns off support for Infiniband and hence prevents a warning message from appearing in cases where infiniband is not available.  This should be excluded from systems that actually want to use Infiniband.   * ''--mca btl ^udapl,openib''   This option turns off support for Infiniband and hence prevents a warning message from appearing in cases where infiniband is not available.  This should be excluded from systems that actually want to use Infiniband.
difx/difxmpi.txt · Last modified: 2015/10/21 10:08 (external edit)