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

2009-07-15 Thread vipin kumar
Hi Ralph, Thanks a lot for your effort and giving us freedom to choose hosts dynamically. I am really excited to see such great feature working in my programs. again thank you very much :) Regards, On Tue, Jul 14, 2009 at 8:11 PM, Ralph Castain wrote: > Hi Vipin > I have added support for thes

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

2009-07-14 Thread Ralph Castain
Hi Vipin I have added support for these features to the OMPI trunk repository. They are only accessible via MPI_Comm_spawn or MPI_Comm_spawn_multiple, specified as MPI Info keys "add-host" and "add-hostfile". Check the man pages for those functions to see how they are used. Quick summar

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

2009-07-02 Thread vipin kumar
Hi Ralph, To add few more points to my queries, as you said earlier "addhost" and "addhostfile" features will come soon. So can you please tell how we are going to use those features, will there be any API for that to calll from inside the program or we have to execute command to use those featur

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

2009-07-02 Thread vipin kumar
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 where OpenMpi/mpirun holds the contents of "hostfile" so that I can dynamically add/alter the values till such a feature is officially included in OpenMpi

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

2009-07-02 Thread Ralph Castain
At the moment, the answer is "no". :-/ However, we do have a "ticket" in our plans to add a "addhost" and "addhostfile" capability to the system. I haven't implemented it yet because of other priorities and the fact that nobody has asked for it before now. Well...actually, people -did- as

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

2009-07-02 Thread vipin kumar
Hi all, I got the solution but its not flexible. I have to provide two host files "chfile" and "dhfile". Contents of host files are as follows $ cat chfile #This file contains all slaves as well as master node localhost 200.40.70.193 $cat dhfile #This file contains all slave nodes 200.40.70.193

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

2009-06-29 Thread vipin kumar
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 --