Don't know which SSI project you are referring to... I only know the OpenSSI project, and I was one of the first who subscribed to its mailing list (since 2001).
http://openssi.org/cgi-bin/view?page=openssi.html I don't think those OpenSSI clusters are designed for tens of thousands of nodes, and not sure if it scales well to even a thousand nodes -- so IMO they have limited use for HPC clusters. Rayson On Thu, Aug 25, 2011 at 11:45 AM, Durga Choudhury <dpcho...@gmail.com> wrote: > Also, in 2005 there was an attempt to implement SSI (Single System > Image) functionality to the then-current 2.6.10 kernel. The proposal > was very detailed and covered most of the bases of task creation, PID > allocation etc across a loosely tied cluster (without using fancy > hardware such as RDMA fabric). Anybody knows if it was ever > implemented? Any pointers in this direction? > > Thanks and regards > Durga > > > On Thu, Aug 25, 2011 at 11:08 AM, Rayson Ho <raysonlo...@gmail.com> wrote: >> Srinivas, >> >> There's also Kernel-Level Checkpointing vs. User-Level Checkpointing - >> if you can checkpoint an MPI task and restart it on a new node, then >> this is also "process migration". >> >> Of course, doing a checkpoint & restart can be slower than pure >> in-kernel process migration, but the advantage is that you don't need >> any kernel support, and can in fact do all of it in user-space. >> >> Rayson >> >> >> On Thu, Aug 25, 2011 at 10:26 AM, Ralph Castain <r...@open-mpi.org> wrote: >>> It also depends on what part of migration interests you - are you wanting >>> to look at the MPI part of the problem (reconnecting MPI transports, >>> ensuring messages are not lost, etc.) or the RTE part of the problem (where >>> to restart processes, detecting failures, etc.)? >>> >>> >>> On Aug 24, 2011, at 7:04 AM, Jeff Squyres wrote: >>> >>>> Be aware that process migration is a pretty complex issue. >>>> >>>> Josh is probably the best one to answer your question directly, but he's >>>> out today. >>>> >>>> >>>> On Aug 24, 2011, at 5:45 AM, srinivas kundaram wrote: >>>> >>>>> I am final year grad student looking for my final year project in >>>>> OpenMPI.We are group of 4 students. >>>>> I wanted to know about the "Process Migration" process of MPI processes >>>>> in OpenMPI. >>>>> Can anyone suggest me any ideas for project related to process migration >>>>> in OenMPI or other topics in Systems. >>>>> >>>>> >>>>> >>>>> regards, >>>>> Srinivas Kundaram >>>>> srinu1...@gmail.com >>>>> +91-8149399160 >>>>> _______________________________________________ >>>>> users mailing list >>>>> us...@open-mpi.org >>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users >>>> >>>> >>>> -- >>>> Jeff Squyres >>>> jsquy...@cisco.com >>>> For corporate legal information go to: >>>> http://www.cisco.com/web/about/doing_business/legal/cri/ >>>> >>>> >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org >>>> http://www.open-mpi.org/mailman/listinfo.cgi/users >>> >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> http://www.open-mpi.org/mailman/listinfo.cgi/users >>> >> >> >> >> -- >> Rayson >> >> ================================================== >> Open Grid Scheduler - The Official Open Source Grid Engine >> http://gridscheduler.sourceforge.net/ >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- Rayson ================================================== Open Grid Scheduler - The Official Open Source Grid Engine http://gridscheduler.sourceforge.net/
