Newsgroups: comp.parallel.mpi
From: lusk@donner.mcs.anl.gov (Rusty Lusk)
Subject: Re: MPICH for Linux/ch_shmem anyone?
Organization: Argonne National Laboratory
Date: 20 Feb 1998 15:16:27 GMT
Message-ID: <6ck6ob$acs@milo.mcs.anl.gov>

In article <uepvkigxbn.fsf@heplix.ikp.physik.tu-darmstadt.de>, Thorsten Ohl <ohl@*RemoveTheStars*hep.tu-darmstadt.de> writes:

|> Did anybody succeed in building a working ch_shmem device for MPICH
|> under Linux?  It compiles for me, but the initial mmap(2) call fails
|> with EINVAL.   [I'm still running Linux 2.1.35]

Please direct MPICH questions to mpi-bugs@mcs.anl.gov.  Linux's mmap
is different from mmap on other Unixes, and we have been hoping it
would eventually conform, but so far it hasn't.  A workaround is on
our to-do list, but is not done.  Meanwhile the ch_shmem device
doesn't work on Linux (Use the default, ch_p4 device, which configure will
pick for you automatically).

Rusty Lusk