On 14 November 2008 at 23:12, Steve M. Robbins wrote: | Howdy, | | | On Thu, Oct 30, 2008 at 07:48:19PM -0400, Adam C Powell IV wrote: | > [Copying -beowulf as there's likely some interest there as well.] | > | > On Thu, 2008-10-30 at 15:21 +0100, Manuel Prinz wrote: | | > > When building against OpenMPI, there are a few choices: | > > | > > 1. Do not build packages using OpenMPI on the unsupported arches. | > > 2. Build against OpenMPI on the supported ones, fall back to LAM on the | > > unsupported ones. | | [ ... ] | | > As for -lam where there's no openmpi, I only know of petsc and babel.
[ For r-cran-rmpi, I also fall back to using LAM where Open MPI is missing. Perusing NEW today, I saw that Adam falls back to MPICH for the new Arpack. May be a better fall-back, but I personally have used LAM and no MPICH before Open MPI. I guess at some point we need to consolidate out MPI efforts. ] | I have subsequently adopted this approach for minc, which uses MPI via | hdf5. I will likely adopt it for boost, too, unless someone has a | better idea. | | While reading this thread, however, I had an idle thought. Could we | prepare an "mpi-default-dev" or "sensible-mpi-dev" package for us to | build-depend on? This would be something like the gcc-defaults | package and simply depend on the appropriate -dev pacakges (OpenMPI on | some architectures, LAM on the rest). | | The idea is to put the messy details about which architectures support | OpenMPI and which use LAM in one place. Sounds good to me, and I am cc'ing the pkg-openmpi list. I won't have spare cycles to work on it, but it strikes as a fundamentally sound suggestion. And while we're at it, it may also make sense to try to come to a consensus of our MPI 'preferences' within Debian. I.e. which one should be the default and own the 'highest' alternatives level. Also, I think we had to give up on some alternatives usage because Open MPI had files the others didn't. I am a little fuzzy on the details but if there is interest, Manuel can probably fill in any details. Dirk -- Three out of two people have difficulties with fractions. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]