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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)