Thanks, George This would be an invaluable reference to me.
Best regards Durga On Sun, Nov 15, 2009 at 6:53 PM, George Bosilca <bosi...@eecs.utk.edu> wrote: > Durga, > > You can find the answer to your questions in > http://www.netlib.org/netlib/utk/people/JackDongarra/PAPERS/scop3.pdf. > > george. > > > On Nov 15, 2009, at 14:39 , Durga Choudhury wrote: > >> I apologize for dragging in this conversation in a different >> direction, but I'd be very interested to know why the behavior with >> the Playstation is different from other architectures. The PS3 box has >> a single gigabit ethernet and no exapansion ports, so I'd assume it's >> behavior would be no different than, e.g. a regular PC using the TCP >> BTL. Perhaps it has something to do with the Cell BE architecture, >> then. What was the reasoning behind this decision? >> >> I am keen to know about such 'hybrid' parallel programming paradigm, >> e.g. using Cell BE or NUMA or CUDA on top of an MPI (or even a grid >> topology). I'd appreciate any pointers to any material in this >> regards. >> >> Durga >> >> On Sun, Nov 15, 2009 at 4:48 PM, George Bosilca <bosi...@eecs.utk.edu> >> wrote: >>> >>> By default only one socket per peer per physical network is opened. >>> However, >>> Open MPI has the possibility to open multiple socket per peer per >>> network, >>> based on some experiments with the Playstation (where having multiple >>> socket >>> allow for more bandwidth). The MCA parameter that allows such behavior is >>> btl_tcp_links. >>> >>> george. >>> >>> On Nov 13, 2009, at 17:59 , Charles Salvia wrote: >>> >>>> When using TCP, how many sockets does each process open per >>>> peer-process? >>>> Does each process open a single socket to connect to each peer-process, >>>> or >>>> does it use TWO sockets, one for sending, one for receiving? >>>> >>>> Thanks, >>>> >>>> -Charles Salvia >>>> _______________________________________________ >>>> 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 >>> >> >> _______________________________________________ >> 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 >
