[Bug 949044] Re: Basic openmpi hello world fails on arm

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** Tags added: patch

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https://bugs.launchpad.net/bugs/949044

Title:
  Basic openmpi hello world fails on arm

Status in “openmpi” package in Ubuntu:
  Triaged

Bug description:
  Steps to reproduce:

  1) apt-get install gcc libopenmpi-dev openmpi-bin
  2) mpicc -o helloworld helloworld.c  # helloworld.c attached
  3) mpirun -np 2 helloworld

  Expected behaviour: hello world output and then the program should exit
  Actual behaviour: hang with 100% CPU usage

  Reproduced on oneiric armel, precise armhf and precise armel.

  Workaround: use libopenmpi1.5-dev and openmpi1.5-bin in precise which
  works fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: libopenmpi-dev 1.4.3-2.1ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-1407.10-omap4 3.2.6
  Uname: Linux 3.2.0-1407-omap4 armv7l
  ApportVersion: 1.94-0ubuntu2
  Architecture: armhf
  Date: Wed Mar  7 15:14:15 2012
  ProcEnviron:
   LANGUAGE=en_US:
   TERM=xterm
   LC_COLLATE=C
   LANG=en_GB
   SHELL=/bin/bash
  SourcePackage: openmpi
  UpgradeStatus: No upgrade log present (probably fresh install)

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