Newsgroups: comp.parallel.mpi
From: ruda@erebor.ics.muni.cz (Miroslav Ruda)
Subject: Re: shared-memory pentium-based multiprocessor
Organization: ICS, MU
Date: Thu, 16 Jul 1998 08:50:00 GMT
Message-ID: <Ew6J7C.92G@news.muni.cz>

In article <6ogahb$87p$1@csu-b.csuohio.edu>,
 sang@cis.csuohio.edu (Janche Sang) writes:
|> We have a shared-memory 4-PentiumCPU multiprocessor running LINUX.
|> I cannot install MPI if I configure the MPI either using
|>     -device=ch_shmem
|> or
|>     -device=ch_p4 -comm=shared

In MPICH 1.1.1 install.ps I found

  Using shared memory with -comm=shared is not supported on LINUX as it is 
  on other variations of Unix because LINUX does not support the standard 
  features of mmap.

I have same problems with MPICH 1.1.0. I can compile mpich with
-device=ch_shmem, but program coredumps with bad call to mmap.

-- 
                                     Mirek Ruda