Hi I guess "task-farming" could give you a certain amount of the kind of fault-tolerance you want. (i.e. a master process distributes tasks to idle slave processors - however, this will only work if the slave processes don't need to communicate with each other)
Jody On Mon, Aug 3, 2009 at 1:24 PM, vipin kumar<vipinkuma...@gmail.com> wrote: > Hi all, > > Thanks Durga for your reply. > > Jeff, once you wrote code for Mandelbrot set to demonstrate fault tolerance > in LAM-MPI. i. e. killing any slave process doesn't > affect others. Exact behaviour I am looking for in Open MPI. I attempted, > but no luck. Can you please tell how to write such programs in Open MPI. > > Thanks in advance. > > Regards, > On Thu, Jul 9, 2009 at 8:30 PM, Durga Choudhury <dpcho...@gmail.com> wrote: >> >> Although I have perhaps the least experience on the topic in this >> list, I will take a shot; more experienced people, please correct me: >> >> MPI standards specify communication mechanism, not fault tolerance at >> any level. You may achieve network tolerance at the IP level by >> implementing 'equal cost multipath' routes (which means two equally >> capable NIC cards connecting to the same destination and modifying the >> kernel routing table to use both cards; the kernel will dynamically >> load balance.). At the MAC level, you can achieve the same effect by >> trunking multiple network cards. >> >> You can achieve process level fault tolerance by a checkpointing >> scheme such as BLCR, which has been tested to work with OpenMPI (and >> other processes as well) >> >> Durga >> >> On Thu, Jul 9, 2009 at 4:57 AM, vipin kumar<vipinkuma...@gmail.com> wrote: >> > >> > Hi all, >> > >> > I want to know whether open mpi supports Network and process fault >> > tolerance >> > or not? If there is any example demonstrating these features that will >> > be >> > best. >> > >> > Regards, >> > -- >> > Vipin K. >> > Research Engineer, >> > C-DOTB, India >> > >> > _______________________________________________ >> > 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 > > > > -- > Vipin K. > Research Engineer, > C-DOTB, India > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
