Does it vary exactly according to your receive_queues specification? On Apr 19, 2011, at 9:03 AM, Eloi Gaudry wrote:
> hello, > > i would like to get your input on this: > when launching a parallel computation on 128 nodes using openib and the "-mca > btl_openib_receive_queues P,65536,256,192,128" option, i observe a rather > large resident memory consumption (2GB: 65336*256*128) on the process with > rank 0 (and only this process) just after a call to MPI_Init. > > i'd like to know why the other processes doesn't behave the same: > - other processes located on the same nodes don't use that amount of memory > - all others processes (i.e. located on any other nodes) neither > > i'm using OpenMPI-1.4.2, built with gcc-4.3.4 and '--enable-cxx-exceptions > --with-pic --with-threads=posix' options. > > thanks for your help, > éloi > > -- > Eloi Gaudry > Senior Product Development Engineer > > Free Field Technologies > Company Website: http://www.fft.be > Direct Phone Number: +32 10 495 147 > > _______________________________________________ > 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/
