Hi team:
I have a question about MPI dynamic process manage, I hope you can provide
some help.
First of all, the MPI program running on multiple nodes, the group with
MPI_COMM_WORLD
was splitted into some subgroups by nodes and sub-communicators were created
respectively
so that MPI processes in one node can communicate with each other through these
sub-communicators.
Then using MPI_Comm_spawn("./child", NULL, 1, hostinfo, 0, sub-communicator,
&newcomm, &errs)
to spawn one child process in each node . Children processes were expected to
form a group
and further to create an intra-communicator so that using it some message
passing can be done between these children processes.
The question is how can I achieve that? Or only have to use MPI_Comm_accept
&MPI_Comm_connect to establish
a connection?
best regards!
-------------------------------------
Eric
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