I am writing a code module that plugs into a larger application
framework. That framework loads my code module as a shared object.
So I do not control how the first process gets started, but I still want
it to be able to start and participate in an MPI group.
Here's roughly what I want to happen ( I think):
framework app running (not under my control)
-> framework loads mycode.so shared object into its process
-> mycode.so starts mpi programs on several hosts (e.g.
via system call to mpiexec )
-> initial mycode.so process participates in the group he
just started (e.g. he shows up in MPI_Comm_group, can use MPI_Send,
MPI_Recv, etc. )
Can this be done?
I am running under Centos 5.2