[Beowulf] MPICH2: Handle Limit?

R Hamann rhamann at uccs.edu
Thu Feb 3 02:56:13 EST 2005


I've been having some strange problems with a program using the MPICH2 
library.  When I added some new datatypes for ghost cell exchange, the 
program would hang.  I figured out that any number of handles over 84 
would cause this.  Fortunately, I could delete some handles that I no 
longer needed, but it still seemed strange.  Are my calculations 
correct that for each process there is an 84 handle limit? or am I 
seeing some other problem?

Ron
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