Re: [OMPI users] Some Newbie questions

Hi, I am not expert, I am user like you but I think I can help you, Q. After installing OpenMPI on each machine ,do i need to run a service/daemon on each machine? Ans. No, not at all, Open MPI takes care of that for you. Q. How does peers in MPI environment communicate ? Ans. Using

[OMPI users] Spawning processes through MPI::Intracomm::Spawn_multiple

Hi all, I am trying to spawn dynamically processes in remote as well as local machine using MPI::Intracomm::Spawn_multiple. I am using MPI::Info object to tell where to launch processes using "host" key and "" as its value but but I am getting the error

Re: [OMPI users] Some Newbie questions

po) , and I didn't see the option > "--preload-binary" , is it because the lower version? > > Bets regards, > umanga. > > > > vipin kumar wrote: > > Hi, > I am not expert, I am user like you but I think I can help you, > > Q. After installing OpenMPI on each ma

Re: [OMPI users] Spawning processes through MPI::Intracomm::Spawn_multiple

ing that I have only local machine where I will invoke launcher program. When one remote node gets added launcher program will launch one "slave" in local machine and one "rslave" in remote machine. Is there any other way to do this. Thanks. Regards, On Mon, Jun 29,

Re: [OMPI users] Spawning processes through MPI::Intracomm::Spawn_multiple

st release. Haven't set the date for that, > though it will likely be this summer. > > Ralph > > On Jul 2, 2009, at 12:45 AM, vipin kumar wrote: > > Hi all, > > I got the solution but its not flexible. I have to provide two host files > "chfile" and "

Re: [OMPI users] Spawning processes through MPI::Intracomm::Spawn_multiple

command to use those features. Thanks, Regards, On Thu, Jul 2, 2009 at 12:46 PM, vipin kumar <vipinkuma...@gmail.com> wrote: > Hi Ralph, > > I am thankful to your reply regarding the matter, however to carry forward > with my activities it would be of great help if I can know whe

[OMPI users] fault tolerance in open mpi

Hi all, I want to know whether open mpi supports Network and process fault tolerance or not? If there is any example demonstrating these features that will be best. Regards, -- Vipin K. Research Engineer, C-DOTB, India

Re: [OMPI users] Spawning processes through MPI::Intracomm::Spawn_multiple

-host mike" will result in foo being > launched on mike, without mpirun having previous knowledge of "mike". > > You'll have to wait to try it, though, until another problem in comm_spawn > on the trunk gets fixed - hopefully, real soon (someone is working on it). > >

[OMPI users] Network connection check

Hi all, Is there any way to check network connection using HostName in OpenMPI ? Thanks and Regards, -- Vipin K. Research Engineer, C-DOTB, India

Re: [OMPI users] Network connection check

neral identification purposes. That may be the same (or not) from the > resolved name that comes back for a given IP interface. > > What are you trying to check, exactly? > > > > On Jul 16, 2009, at 1:56 AM, vipin kumar wrote: > > Hi all, >> >> Is there any

Re: [OMPI users] Network connection check

> > Are you asking to find out this information before issuing "mpirun"? Open > MPI does assume that the nodes you are trying to use are reachable. > > NO, Scenario is a pair of processes are running one in "master" node say "masterprocess" and one in "slave" node say "slaveprocess". When

Re: [OMPI users] Network connection check

On Thu, Jul 23, 2009 at 3:03 PM, Ralph Castain wrote: > It depends on which network fails. If you lose all TCP connectivity, Open > MPI should abort the job as the out-of-band system will detect the loss of > connection. If you only lose the MPI connection (whether TCP or some

Re: [OMPI users] Network connection check

Thank you all Jeff, Jody, Prentice and Bogdan for your invaluable clarification, solution and suggestion, Open MPI should return a failure if TCP connectivity is lost, even with a > non-blocking point-to-point operation. The failure should be returned in > the call to MPI_TEST (and friends).

Re: [OMPI users] Network connection check

> You don't specify and based on your description I infer that you are not > using a batch/queueing system, but just a rsh/ssh based start-up mechanism. You are absolutely correct. I am using rsh/ssh based start-up mechanism. A batch/queueing system might be able to tell you whether a remote

Re: [OMPI users] fault tolerance in open mpi

MPI (and > other processes as well) > > Durga > > On Thu, Jul 9, 2009 at 4:57 AM, vipin kumar<vipinkuma...@gmail.com> wrote: > > > > Hi all, > > > > I want to know whether open mpi supports Network and process fault > tolerance > >

Re: [OMPI users] Bus Error (7) on PS3 running HPL (OpenMPI 1.2.8)

may be because of insufficient storage space...???( I mean hard disk space.) On Thu, Aug 6, 2009 at 11:23 PM, Jeff Squyres wrote: > Any chance you could re-try the experiment with Open MPI 1.3.3? > > > On Aug 4, 2009, at 11:10 AM, Hoelzlwimmer Andreas -

Re: [OMPI users] how to SPMD on openmpi

Hi Ankur, try this command, $ mpirun -np 2 -host firstHostIp,secondHostIp a.out for details read manual page for "mpirun". $ man mpirun Regards, On Wed, Sep 30, 2009 at 3:22 PM, ankur pachauri wrote: > Dear all, > > I have been able

Re: [OMPI users] fault tolerance in open mpi

-mca rmaps resilient > > We will be sure to email the list once this work becomes more stable and > available. > > -- Josh > > > On Sep 18, 2009, at 2:56 AM, vipin kumar wrote: > > Hi Josh, >> >> It is good to hear from you that work is in progress towards resilie

Re: [OMPI users] fault tolerance in open mpi

mpi.org> wrote: > Disconnect is a -collective- operation. Both parent and child have to call > it. Your child process is "hanging" while it waits for the parent. > > On Dec 21, 2009, at 1:37 AM, vipin kumar wrote: > > Hello folks, > > As I explained my problem earl

Re: [OMPI users] fault tolerance in open mpi

alph Castain <r...@open-mpi.org> wrote: > That's just OMPI's default behavior - as Josh said, we are working towards > allowing other behaviors, but for now, this is what we have. > > > On Dec 23, 2009, at 5:40 AM, vipin kumar wrote: > >> Thank you Ralph, >> >>