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From: Dirk Eddelbuettel (edd_at_[hidden])
Date: 2007-08-01 22:31:30

Dear Open MPI developers,

We (as in the Debian maintainer for Open MPI) got this bug report from
Uwe who sees mpi apps segfault on Debian systems with the FreeBSD
kernel. Is there anybody here familiar with any BSD peculiarties that
may play a role?

Any input would be greatly appreciated!


Three out of two people have difficulties with fractions.

attached mail follows:

Package: openmpi-bin
Version: 1.2.3-1
Severity: important
Tags: patch
User: glibc-bsd-devel_at_[hidden]
Usertags: kfreebsd


openmpi segfaults on kFreeBSD, I'm not sure where the problem lies.

My openmpi is built from source on i386 kFreeBSD using the patch from

$ cat a.c
#include <stdio.h>
#include <mpi.h>

int main(int argc, char *argv[])
        unsigned int rank;

        MPI_Init(&argc, &argv);
        MPI_Comm_rank(MPI_COMM_WORLD, &rank);
        printf("Hello world, I'm process %d\n", rank);
$ mpicc a.c
$ mpirun -np 1 ./a.out
[debian:10755] *** Process received signal ***
[debian:10755] Signal: Segmentation fault (11)
[debian:10755] Signal code: (1)
[debian:10755] Failing at address: (nil)
[debian:10755] [ 0] /lib/i686/cmov/ [0x28170c9c]
[debian:10755] [ 1] [0xbfbfffb4]
[debian:10755] [ 2] /lib/ [0x28060aa0]
[debian:10755] [ 3] /lib/ [0x2805c7ab]
[debian:10755] [ 4] /lib/ [0x280600ee]
[debian:10755] [ 5] /lib/i686/cmov/ [0x28120b99]
[debian:10755] [ 6] /lib/ [0x2805c7ab]
[debian:10755] [ 7] /lib/i686/cmov/ [0x2812124c]
[debian:10755] [ 8] /lib/i686/cmov/ [0x28120ad1]
[debian:10755] [ 9] /usr/lib/ [0x280daaf2]
[debian:10755] [10] /usr/lib/ [0x280d901b]
[debian:10755] [11] /usr/lib/ [0x280d924a]
[debian:10755] [12] /usr/lib/ [0x280d9a79]
[debian:10755] [13] /usr/lib/ [0x280d9ed6]
[debian:10755] [14] /usr/lib/ [0x280e09e1]
[debian:10755] [15] /usr/lib/ [0x280e145b]
[debian:10755] [16] /usr/lib/ [0x280e1e1d]
[debian:10755] [17] /usr/lib/ [0x28097b6d]
[debian:10755] [18] /usr/lib/ [0x28088d28]
[debian:10755] [19] /usr/lib/ [0x2808c2ff]
[debian:10755] [20] /usr/lib/ [0x280889c0]
[debian:10755] [21] mpirun(orterun+0x141) [0x804a185]
[debian:10755] [22] mpirun(main+0x1e) [0x804a036]
[debian:10755] [23] /lib/i686/cmov/ [0x2819197b]
[debian:10755] [24] mpirun [0x8049fa1]
[debian:10755] *** End of error message ***
Segmentation fault (core dumped)

Please let me know if/how I can provide more information.

Thanks, Uwe.

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