i'd like to know if someone had a chance to check at the issue I reported.
thanks and happy new year !
On 12/21/2010 10:58 AM, Eloi Gaudry wrote:
> 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 memory consumption (2GB: 65336*256*128) on the
> process with rank 0 (only).
> this memory seems to be initialized and in use as the resident memory
> indicator matches the virtual one. at the time of observation, a call
> to MPI_Init has been done, but no communication (user side) has been
> 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
> - 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. the
> cluster is based on eight-core nodes using mellanox hca.
> thanks for your help,
Senior Product Development Engineer
Free Field Technologies
Company Website: http://www.fft.be
Direct Phone Number: +32 10 495 147