folloeing 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 [mpiuser@f2 programrun]$ mpdboot -n 2 -v totalnum=2 numhosts=1 there are not enough hosts on which to start all processes
On Wed, Apr 20, 2011 at 7:51 PM, mohd naseem <naseemshak...@gmail.com>wrote: > 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 >> > >
