Bug#833425: Aw: Re: Bug#833425: mpi-defaults: switch to openmpi on hppa architecture

[Alastair McKinstry]

Hi all,


On 04/08/2016 11:02, Helge Deller wrote:
> Hi Mattia,
>
>> On Thu, Aug 04, 2016 at 09:34:35AM +0200, Helge Deller wrote:
>>> mpi-defaults depends on libmpich-dev for the hppa architecture (like m68k and sh4).
>>> All other architectures use libopenmpi-dev.
>>> Is there a reason for that?
>> reason is that at that time openmpi was not available on those
>> architecture.
> Ok. I assumed that.
OpenMPI recently moved to using gcc atomics where available, which means
we no longer need to ship patches for each architecture. So I expect
OpenMPI to work on all archs before stretch.

>> Besides, do we know whether openmpi works correctly on those
>> architectures?  Since recently we have mpi-testsuite, but as you can see
>> the situation is not nice:
>> https://buildd.debian.org/status/package.php?p=mpi-testsuite
> Oops, at least hppa is not more broken than others :-)
Note, I'm currently working on OpenMPI 2.0.0 and hoping to get it into
Stretch.
This will involve a transition:

https://release.debian.org/transitions/html/auto-openmpi.html

Thanks for pointing to the mpi-testsuite results. I  wasn't aware they
are do bad. I'll investigate.
OpenMPI 1.10.3 is "mostly ok" according to:
https://buildd.debian.org/status/package.php?p=openmpi&suite=unstable

I've openmpi2 in experimental:
https://buildd.debian.org/status/package.php?p=openmpi&suite=experimental

I'm working with upstream and hoping to add symbol versioning, as the
regular soname changes are quite problematic.
> Currently I've stopped all hppa buildds and plan to upgrade them to gcc6
> before starting them again. And, I've started a test build of boost1.6.1
> to check if the mpi-defaults change will help. I expect a result during
> the next few hours. I'll let you know of the outcome.
>
> Helge
>
Alastair, as OpenMPI maintainer.

-- 
Alastair McKinstry, <alastair at sceal.ie>, <mckinstry at debian.org>, https://diaspora.sceal.ie/u/amckinstry
Misentropy: doubting that the Universe is becoming more disordered.