Hello Jeff First of all About your replay: ³ I'm surprised that we have not yet put this info in our FAQ -- I'll make a note to do so... ³
I sent support at Mailing list on date: 2008-08-21 12:43:40 Subject: [OMPI users] Memory allocation with PGI compiler About ptmalloc: I have a cluster of 16 nodes DualCPU DualCore AMD RAM 16 GB with InfiniBand CISCO HCA and switch InfiniBand. It uses Linux RH Enterprise 4 64 bit , OpenMPI 1.2.7, PGI 7.1-4 and openib-1.2-7. Hence it means that the option disable-ptmalloc2 is catastrophic in the above configuration. Can you help me about this issue in memory allocation in Openmpi 1.2.7 and PGI. I tested also with PGI 7.2 with same effects. Thans in advance On 11/10/08 14:03, "Jeff Squyres" <jsquy...@cisco.com> wrote: > I'm surprised that we have not yet put this info in our FAQ -- I'll > make a note to do so... > > ptmalloc2 is a memory allocator that is only relevant for OpenFabrics > networks. If you're not using OpenFabrics, then you don't need it, > and you can safely disable ptmalloc2. FWIW, we have changed the > default behavior in the upcoming Open MPI v1.3 to include include > ptmalloc2 by default. > > > > On Oct 10, 2008, at 11:18 AM, Francesco Iannone wrote: > >> Dear openmpi users >> >> I have compiled oenmpi.1.2.7 with PGI 7.1-4 compilers with configure >> option ³--disable-ptmalloc2-opt-sbrk² , to fix a segmentation fault >> in sysMALLOC function of ³opal/mca/memory/ptmalloc2/malloc.c². >> >> Anybody knows what it means to compile with this option ? >> >> thanks >> >> >> Dr. Francesco Iannone >> Associazione EURATOM-ENEA sulla Fusione >> C.R. ENEA Frascati >> Via E. Fermi 45 >> 00044 Frascati (Roma) Italy >> phone 00-39-06-9400-5124 >> fax 00-39-06-9400-5524 >> mailto:francesco.iann...@frascati.enea.it >> http://www.afs.enea.it/iannone >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > Dr. Francesco Iannone Associazione EURATOM-ENEA sulla Fusione C.R. ENEA Frascati Via E. Fermi 45 00044 Frascati (Roma) Italy phone 00-39-06-9400-5124 fax 00-39-06-9400-5524 mailto:francesco.iann...@frascati.enea.it http://www.afs.enea.it/iannone
