Package: lam4
Version: 7.1.1-3
Severity: normal

When an lam MPI program crashes on our AMD64 multiprocessor machine (dual
core dual opteron), lamclean or even lamhalt and lamboot fail to fully clear
shared memory semaphores, as can be seen with ipcs. Eventually, shared
memory is exhausted and lam fails to run on N processors, although it may
still run on N-1 processors. It is necessary to use ipcrm to clear the
semaphores before lam works properly again. It would be desirable that
lamclean or lamboot should be able to do this without ipcrm or running some
cleanup script.

Not sure if this is an upstream problem - I only have a Debian
multi-processor machine available to test.

Thanks.

Cliburn

-- System Information:
Debian Release: 3.1
  APT prefers stable
  APT policy: (500, 'stable'), (50, 'unstable'), (50, 'testing')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.12-1-amd64-k8-smp
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)

Versions of packages lam4 depends on:
ii  debianutils                 2.8.4        Miscellaneous utilities specific t
ii  dpkg                        1.10.28      Package maintenance system for Deb
ii  libc6                       2.3.2.ds1-22 GNU C Library: Shared libraries an
ii  libgcc1                     1:3.4.3-13   GCC support library
ii  libstdc++5                  1:3.3.5-13   The GNU Standard C++ Library v3

Versions of packages lam4 recommends:
ii  lam-runtime                   7.1.1-3    LAM runtime environment for execut

-- no debconf information


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