LAM/MPI logo

LAM/MPI General User's Mailing List Archives

  |   Home   |   Download   |   Documentation   |   FAQ   |   all just in this list

From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2003-05-14 14:46:11


On Mon, 12 May 2003, Rohan Inamdar wrote:

> If my parent group contains only one process and I spawn a single process
> using MPI_Comm_spawn(). How can i determine how much time did spawning take.
>
> If call to MPI_Comm_spawn in above case returns, does it guarantee that
> the process has been spawned and started on the destination machine.

In LAM/MPI, yes.

> Documentation only says that 'MPI_Comm_spawn' is collective over parent
> group.

In LAM, when MPI_Comm_spawn returns, the parent communicator and the child
processes have fully synchronized with each other. The children processes
will exit MPI_Init a short time later.

-- 
{+} Jeff Squyres
{+} jsquyres_at_[hidden]
{+} http://www.lam-mpi.org/