I am new to mpi, so I'm sorry for any silly questions. My idea was to try to use dual core machine as two nodes. I have a limited access to a cluster, so this was just for "testing" purposes. My default hostfile contains usual comments and this two nodes:
node0 node1 I thought that each processor is a node for MPI purpose. Im not sure what do you mean with "mpirun cmd line"? Regards, Mario On Sat, Apr 17, 2010 at 1:54 AM, Ralph Castain <r...@open-mpi.org> wrote: > > On Apr 16, 2010, at 5:08 PM, Mario Ogrizek wrote: > > I checked the default MCA param file, and found it was there that was > (automatically) specified as a relative path, so i changed it. > So now, it works, altho, still something is not right. > Seems like its creating 4 times only 1 process. > Not sure if it has to do something with my hostfile, it contains: > > node0 > node1 > > I am running this on a simple dualcore machine, so i specified it as a > localhost with two nodes. > > > I don't understand this comment - a dual core machine would still be a > single node. Just happens to have two processors in it. > > Could you send the contents of your hostfile and your mpirun cmd line? > > > Regards, > > Mario > > On Sat, Apr 17, 2010 at 12:52 AM, Mario Ogrizek > <mario.guard...@gmail.com>wrote: > >> I understand, so, its looking for a >> working_dir/usr/local/etc/openmpi-default-hostfile >> I managed to run a hello world program from the console, while my wd was >> just "/" and it worked, altho strangely... >> example for 4 procs: >> >> Hello MPI World From process 0: Num processes: 1 >> Hello MPI World From process 0: Num processes: 1 >> Hello MPI World From process 0: Num processes: 1 >> Hello MPI World From process 0: Num processes: 1 >> >> So, you are saying i allways have to be in "/" to run mpi programs, or >> there is a way for mpi to search absolute path? >> It seems pretty inconvinient this way. >> I think v 1.2 didnt have this limitation. >> >> Does this have to do anything with LD_LIBRARY_PATH? >> >> Regards, >> >> Mario >> >> On Fri, Apr 16, 2010 at 7:46 PM, Ralph Castain <r...@open-mpi.org> wrote: >> >>> How did you specify it? Command line? Default MCA param file? >>> >>> On Apr 16, 2010, at 11:44 AM, Mario Ogrizek wrote: >>> >>> Any idea how to solve this? >>> >>> On Fri, Apr 16, 2010 at 7:40 PM, Timur Magomedov < >>> timur.magome...@developonbox.ru> wrote: >>> >>>> Hello. >>>> It looks that you hostfile path should >>>> be /usr/local/etc/openmpi-default-hostfile not >>>> usr/local/etc/openmpi-default-hostfile but somehow Open MPI gets the >>>> second path. >>>> >>>> В Птн, 16/04/2010 в 19:10 +0200, Mario Ogrizek пишет: >>>> > Well, im not sure why should i name it /openmpi-default-hostfile >>>> > Especially, because mpirun v1.2 executes without any errors. >>>> > But, i made a copy named /openmpi-default-hostfile, and still, the >>>> > same result. >>>> > >>>> > This is the whole error message for a simple hello world program: >>>> > >>>> > >>>> > Open RTE was unable to open the hostfile: >>>> > usr/local/etc/openmpi-default-hostfile >>>> > Check to make sure the path and filename are correct. >>>> > >>>> -------------------------------------------------------------------------- >>>> > [Mario.local:04300] [[114,0],0] ORTE_ERROR_LOG: Not found in file >>>> > base/ras_base_allocate.c at line 186 >>>> > [Mario.local:04300] [[114,0],0] ORTE_ERROR_LOG: Not found in file >>>> > base/plm_base_launch_support.c at line 72 >>>> > [Mario.local:04300] [[114,0],0] ORTE_ERROR_LOG: Not found in file >>>> > plm_rsh_module.c at line 990 >>>> > >>>> -------------------------------------------------------------------------- >>>> > A daemon (pid unknown) died unexpectedly on signal 1 while attempting >>>> > to >>>> > launch so we are aborting. >>>> > >>>> > >>>> > There may be more information reported by the environment (see above). >>>> > >>>> > >>>> > This may be because the daemon was unable to find all the needed >>>> > shared >>>> > libraries on the remote node. You may set your LD_LIBRARY_PATH to have >>>> > the >>>> > location of the shared libraries on the remote nodes and this will >>>> > automatically be forwarded to the remote nodes. >>>> > >>>> -------------------------------------------------------------------------- >>>> > >>>> -------------------------------------------------------------------------- >>>> > mpirun noticed that the job aborted, but has no info as to the process >>>> > that caused that situation. >>>> > >>>> -------------------------------------------------------------------------- >>>> > mpirun: clean termination accomplished >>>> > >>>> > >>>> > >>>> > >>>> > ps. PTP is a parallel tools platform plugin for eclipse >>>> > >>>> > >>>> > Regards, >>>> > >>>> > >>>> > Mario >>>> > >>>> > _______________________________________________ >>>> > users mailing list >>>> > us...@open-mpi.org >>>> > http://www.open-mpi.org/mailman/listinfo.cgi/users >>>> >>>> >>>> -- >>>> Kind regards, >>>> Timur Magomedov >>>> Senior C++ Developer >>>> DevelopOnBox LLC / Zodiac Interactive >>>> http://www.zodiac.tv/ >>>> >>>> _______________________________________________ >>>> 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 >
