I don't think we have such an environment variable -- are you sure you're using Open MPI?
The only reference to MPI_TYPE_MAX I see in the OMPI source tree is in the ROMIO README file: ----- * When using ROMIO with SGI MPI, you may sometimes get an error message from SGI MPI: ``MPI has run out of internal datatype entries. Please set the environment variable MPI_TYPE_MAX for additional space.'' If you get this error message, add this line to your .cshrc file: setenv MPI_TYPE_MAX 65536 Use a larger number if you still get the error message. ----- On Apr 8, 2010, at 4:27 PM, Cole, Derek E wrote: > Hi All, > > I keep getting an error about running out of MPI_TYPE_MAX and needing to set > the environment variable higher. What is this, and why is it happening? All > of the types and groups, etc that I create during my programs run are freed > at the appropriate times. Making this number 10x bigger gets me about 10x > more iterations..and I heard someone say to just set it to a huge number, but > I hate doing stuff like that blindly. > > Derek > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/