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 in the form of "addhost" and "addhostfile".
Thanks. Regards, On Thu, Jul 2, 2009 at 12:23 PM, Ralph Castain <r...@open-mpi.org> wrote: > 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- ask for it a long time ago, but not for quite > awhile now. ;-) > > Anyway, I can implement those features pretty easily. Could get to it in > the next few days - otherwise, it will have to wait another week as I will > be out. > > Either way, though, it would only be in the OMPI devel trunk until the next > feature series (1.5) has its first 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 "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 > > and the command line I am using is > > $ mpirun -np 1 -hostfile chfile launcher -hostfile dhfile > > but this is not what I want. > I don't know in advance which and how many remote nodes can be there. > Dynamically nodes may be added and requested to serve the master. So I am > assuming 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, 2009 at 10:49 AM, vipin kumar <vipinkuma...@gmail.com>wrote: > >> 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 "<ip_address>" as its >> value but but I am getting the error >> >> -------------------------------------------------------------------------- >> There are no allocated resources for the application >> slaveprocess >> that match the requested mapping: >> >> >> Verify that you have mapped the allocated resources properly using the >> --host or --hostfile specification. >> -------------------------------------------------------------------------- >> >> I tried with "<hostname>" too. >> but its not working. >> >> It works fine if I give the value "localhost" to "host:" key. It launches >> successfully processes in local machine. >> >> any help will be greatly appreciated. >> >> Regards, >> -- >> Vipin K. >> Research Engineer, >> C-Dot, Bangalore, India >> > > > > -- > Vipin K. > Research Engineer, > C-DOTB, India > _______________________________________________ > 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 > -- Vipin K. Research Engineer, C-DOTB, India
