You need to compile your cpi.c to get an executable. This is not an MPI issue. :-)
Also, mpdboot is part of a different MPI implementation named MPICH; you don't need to run mpdboot with Open MPI. If you have further questions about MPICH, you'll need to ping them on their mailing list -- we aren't able to answer MPICH questions here, sorry! (background: MPI = a book. It's a specification. There's a bunch of different implementations of that specification available; Open MPI is one [great] one. :-) MPICH is another. There are also others.) On Apr 20, 2011, at 10:24 AM, mohd naseem wrote: > 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 > > > _______________________________________________ > 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/
