Hi, Am 26.08.2013 um 18:10 schrieb Federico Carotenuto:
> Kind Reuti, > > as you suggested I proceeded to install Openmpi 1.6.5 Good. > and changed the environmental variable MPI_ROOT No, there is no such variable necessary to be set (at least from Open MPI points of view). > to the new folder, should I know source the commands in .bashrc to be sure to > be able to execute the right mpirun and mpiexec (something like source Please check with: which mpicc which mpiexec which you are using. It's also necessary to recompile the application with the new MPI library. -- Reuti > /home/modelstation/Software/openmpi1.6.5/mpirun, where the directory is the > installation directory)? > > Thanks! > > Reuti <re...@staff.uni-marburg.de> ha scritto: > >> Am 26.08.2013 um 14:33 schrieb Federico Carotenuto: >> >>> Kind Reuti, >>> >>> I'm start thinking I've got some compilation issue with MPI: I'm afraid >>> I've got the MPICH 1 coming with the PGI compiler installation, because if >>> I try to run mpiexec the terminal answers with "The program 'mpiexec' can >>> be found in the following packages: *lam-runtime *mpich2 *openmpi-bin >>> *openmpi1.6-bin. Try: sudo apt-get install <selected package>". >>> >>> I've also tried to modify the machinefile that comes by default under >>> /opt/pgi/linux86-64/13.4/mpi/mpich/share/machinefile.LINUX adding the line >>> "modelstation:8", but still mpirun prompts for the password 8 times. >> >> This was normal at that time: one rsh/ssh per parallel instance. Nowadays >> Open MPI and MPICH2/3 will use only one `rsh`/`ssh` per host and start all >> other parallel tasks as thread (i.e: on a local machine they don't need a >> local `rsh` or `ssh` at all). Although you could either adjust `rsh` to >> disregard passwords (deprecated) or route `rsh` to `ssh` and enable >> passphraseless login: >> >> MPICH(1) is outdated (released 2005) and I suggested already to Portland to >> exclude it from the package. IMO this adds more confusion than it help. >> >> Hence, please install a recent version of Open MPI or MPICH2/3 and then we >> can look into it again on the appropriate list. >> >> -- Reuti >> >> PS: The above mentioned LAM/MPI is outdated too. >> >> >>> Thanks for your help and patience >>> >>> >>> Reuti <re...@staff.uni-marburg.de> ha scritto: >>> >>>> Am 26.08.2013 um 12:53 schrieb Federico Carotenuto: >>>> >>>>> Kind Reuti, >>>>> >>>>> Thanks for your quick reply! >>>>> >>>>> >>>>> I'm afraid I didn't set a machinefile...that may be the problem: I'm >>>>> fairly new to MPI and SSH and I'm still quite confused even after reading >>>>> some tutorials. >>>> >>>> There is a default. But you can also specify it on the command line to >>>> test it: >>>> >>>> mpiexec -host modelstation -np 2 mpihello >>>> >>>> -- Reuti >>>> >>>> >>>>> My etc/hosts contains: 127.0.0.1 localhost and 127.0.1.1 modelstation >>>>> (modelstation is the machine name I was mentioning in the previous mail) >>>>> >>>>> if I type hostname the terminal returns modelstation >>>>> >>>>> Cheers >>>>> >>>>> >>>>> >>>>> Reuti <re...@staff.uni-marburg.de> ha scritto: >>>>> >>>>>> Am 26.08.2013 um 12:15 schrieb Federico Carotenuto: >>>>>> >>>>>>> I'm currently having this issue with mpirun: I want to launch a program >>>>>>> only on the cores of the local machine, but every time I run an mpi >>>>>>> program it says that the host 127.0.0.1 <local_machine_name> with it's >>>>>>> associated key is unkown and asks me if I want to add it to the list of >>>>>>> ssh known hosts. >>>>>>> >>>>>>> By chowing/chmodding the .ssh file I was able to permanently add this >>>>>>> "host" to the list of known hosts, but my problem is that every program >>>>>>> that I try to run ask me to insert a password (the actual local user >>>>>>> password) n times where n is equal to the -np parameter (i.e.: if I run >>>>>>> the program on 8 cores I receive 8 successive password pronts). >>>>>>> >>>>>>> If I insert the password everything runs fine, but it's quite annoying >>>>>>> and I wish to bypass such step: is there a way to have mpirun memorize >>>>>>> the password? Or make him understand that the 8 nodes are actually 8 >>>>>>> cores on the local machine and not 8 different hosts? >>>>>> >>>>>> Which hostname do you specify in your machinefile? >>>>>> Which hostnames are set in /etc/hosts for your local machine? >>>>>> What is the output of `hostname`? Does it match the one in the >>>>>> machinefile? >>>>>> >>>>>> For systemd there is a new command `hostnamectl --static set-hostname >>>>>> [NAME]` to set it. >>>>>> >>>>>> -- Reuti >>>>>> _______________________________________________ >>>>>> users mailing list >>>>>> us...@open-mpi.org >>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users >>>>>> >>>>> >>>>> >>>>> >>>>> ---------------------------------------------------------------- >>>>> This message was sent using IMP, the Internet Messaging Program. >>>>> >>>>> _______________________________________________ >>>>> 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 >>>> >>> >>> >>> >>> ---------------------------------------------------------------- >>> This message was sent using IMP, the Internet Messaging Program. >>> >>> _______________________________________________ >>> 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 >> > > > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program. > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
