clone 253422 -1 retitle 253422 mpirun is inconvenient on SMP systems retitle -1 mpirun is inconvenient on OpenMosix clusters thanks
On Thu, 2005-03-24 at 09:08 +0100, Josselin Mouette wrote: > Le jeudi 24 mars 2005 à 05:27 +0900, Adam C Powell IV a écrit : > > > There is a patch available at http://squishy.monkeysoft.net/mpich/ to > > > use mosrun instead of rsh. However, it isn't even necessary: mpirun > > > should just understand --all-local and, when getting this option, spawn > > > all processes locally instead of using rsh. OpenMosix then makes all > > > processes migrate. > > > > There is a ch_shmem transport option in mpich which might suit your > > needs. Please try building this option, by taking the mpich package and > > editing debian/rules line 30, replacing: > > --with-device=ch_p4 > > with: > > --with-device=ch_shmem > > > > If this works, then after the next bugfix release gets into testing, I > > will upload a new version which builds an additional set of -shmem > > packages to finally close this bug. But since that will go into the NEW > > queue, it will probably take quite a while to get into the archive... > > I don't have an OpenMosix cluster handy to test that anymore, but I > think this isn't suitable for OpenMosix, as processes that share memory > can't be migrated. For best performance, I believe a backend using pipes > or local sockets should be used. I see. Well, I've just cloned this bug, and will close the SMP bug when the ch_shmem transport is included, and leave the OpenMosix bug open until there is a suitable transport. Thank you, -Adam -- GPG fingerprint: D54D 1AEE B11C CE9B A02B C5DD 526F 01E8 564E E4B6 Welcome to the best software in the world today cafe! http://www.take6.com/albums/greatesthits.html
