[Pkg-openmpi-maintainers] Bug#845594: openmpi-bin: MPI_Comm_spawn fails if blt_tcp_if_include is set to lo

[Thibaut Paumard]

Hi,

I have made a couple of additional tests.

I have run
 mpirun --mca btl_tcp_if_include lo --mca btl tcp,self -np 2 \
        --mca plm_rsh_agent /bin/true slave
under a variety of environments. I get a surprising result: it works in
a sid chroot in some circumstances.

Results:

- plain jessie, networking on:                   PASS
- plain jessie, networking off:                  PASS
- jessie VirtualBox, networking on:              PASS
- jessie VirtualBox, networking off:             PASS
- jessie chroot (jessie host), networking on:    PASS
- jessie chroot (jessie host), networking off:   PASS

- unstable chroot (jessie host), networking on:  PASS
- unstable chroot (jessie host), networking off: FAIL
- unstable VirtualBox:                           FAIL

I attach the error log from the attempt "unstable chroot (jessie host),
networking off".


Kind regards, Thibaut.

Le 25/11/2016 à 08:51, Thibaut Paumard a écrit :
> Control: retitle 845594 "openmpi: lo interface broken in the tcp btl"
> 
> Hi,
> 
> Actually the regression can also be demonstrated without using
> MPI_Comm_spawn with:
>  mpirun -np 2 --mca btl_tcp_if_include lo --mca btl tcp,self ./slave
> 
> The above command runs fine under jessie (openmpi 1.6.5-9.1) but fails
> under sid.
> 
> For the record my test environment is a production machine for jessie
> and a virtualbox virtual machine for sid.
> 
> Kind regards, Thibaut.
> 

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