sir i m still not able to trace all the hosts following error shows
[mpiuser@f2 programrun]$ mpiexec -np 4 ./cpi.c problem with execution of ./cpi.c on f2: [Errno 13] Permission denied problem with execution of ./cpi.c on f2: [Errno 13] Permission denied On Tue, Apr 19, 2011 at 8:25 PM, Ralph Castain <r...@open-mpi.org> wrote: > You have to tell mpiexec what nodes you want to use for your application. > This is typically done either on the command line or in a file. For now, you > could just do this: > > mpiexec -host node1,node2,node3 -np N ./my_app > > where node1,node2,node3,... are the names or IP addresses of the nodes you > want to run on, and N is the number of total processes you want executed. > > > On Apr 19, 2011, at 8:47 AM, mohd naseem wrote: > > > sorry sir, > > i am unable to understand what u are saying ? becoz i am a new user of mpi. > > please tell me details about it and command also > > thanks > > > > On Tue, Apr 19, 2011 at 2:32 PM, Reuti <re...@staff.uni-marburg.de> wrote: > >> Good, then please supply a hostfile with the names of the machines you >> want to run for a particular run and give it as option to `mpiexec`. See >> options -np and -machinefile. >> >> -- Reuti >> >> >> Am 19.04.2011 um 06:38 schrieb mohd naseem: >> >> > sir >> > when i give mpiexec hostname command. >> > it only give one hostname. rest are not shown. >> > >> > >> > >> > >> > >> > >> > On Mon, Apr 18, 2011 at 7:46 PM, Reuti <re...@staff.uni-marburg.de> >> wrote: >> > Am 18.04.2011 um 15:40 schrieb chenjie gu: >> > >> > > I am a green hand on Openmpi, I have the following Openmpi structure, >> however it has problem when running across multiple nodes. >> > > I am trying to build a Bewolf Cluster between 6 nodes of our serve (HP >> Proliant G460 G7), I have installed the Openmpi on one node (assuming at >> /mirror), >> > > ./configure --prefix=/mirror/openmpi CC=icc CXX=icpc F77=ifort >> FC=ifort >> > > make all install >> > > >> > > using NFS, the directory of /mirror was successfully exported to the >> rest of 5 nodes. Now as I test the Openmpi, it runs very well on a single >> node, >> > > however it hangs across multiple nodes. >> > > >> > > Now one possible reason as I know is that Openmpi uses TCP to exchange >> data between different nodes, so I am worried about >> > > whether there are firewalls between each nodes, which can be factory >> integrated at somewhere(switch/NIC). Could anyone give me some >> > > information on this point? >> > >> > It's not only about MPI communcation. Before you need some means to >> allow the startup of the local orte daemons on each machine by >> passphraseless ssh-keys or better hostbased authentication >> http://arc.liv.ac.uk/SGE/howto/hostbased-ssh.html , or enable `rsh` on >> the machines and tell Open MPI to use it. Is: >> > >> > mpiexec hostname >> > >> > giving you a list of the involved machines? >> > >> > -- Reuti >> > >> > >> > > Thanks a lot, >> > > Regards, >> > > ArchyGU >> > > Nanyang Technological University >> > > _______________________________________________ >> > > 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 >> > > _______________________________________________ > 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 >
