2009/9/10 Alan Woodland <awoodl...@debian.org>: > 2009/9/10 Manuel Prinz <man...@debian.org>: >> Hi Alan! >> >> Am Donnerstag, den 10.09.2009, 00:33 +0100 schrieb Alan Woodland: >>> BLCR is now in main. It would be nice if openmpi were built using this >>> where it is available. >>> >>> I've attached a short patch adding options to configure, and build-depends >> >> Thanks a lot for the patch! >> >> I did think about adding it but BLCR was not packaged yet. I will add it >> in the next upload. >> >> Unfortunately, I do not have any possibility to test Open MPI with BLCR >> at the moment. Can you confirm it works as expected? > > I checked it configured and built last night on my machine, but I've > not had a chance to test any functionality properly yet.
Ok, I've had a bit more of a fiddle with it now. Several things have come up :) Firstly a dependency on libcr0 is now generated automatically for libopenmpi1.3, which is technically accurate, but not really strictly needed. If libcr0 isn't installed mpirun still works exactly as before anyway. The only time you notice that libcr0 isn't installed is when you pass the "-am ft-enable-cr" flag to mpirun which causes it to try and dlopen() the library that is really linked against libcr0. Secondly it seems that we're going to need to install ompi-checkpoint and ompi-restart in order for this to be useful. This could be done a number of ways I think: 1) add to debian/openmpi-bin.install (Simple, gets the extra utilities even on platforms blcr doesn't support though. Might not be a bad thing anyway if they're useful for the 'self' checkpoint mechanism anyway?) 2) add a conditional in install-arch and arrange for them to only be installed on amd64,i386,ppc,armel where BLCR builds and works currently 3) add an extra package (e.g. openmpi-checkpoint, build it only on supported arches. Suggest/recommend this package, probably from openmpi-bin? This solution also fits nicely with what I said earlier about not needing libcr0 unless you actually want to use blcr checkpoints, because we could suppress the automatic dependency for libcr0 and manually add it to this package instead, so avoiding forcing all openmpi users to install libcr0 unless they actually care about checkpoints) What are your thoughts on this? I'll try and convert the I've got into a repeatable, automated test and then add it to this bug report in a bit too. Alan -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
