Starting Parallel Tasks

After you set breakpoints, you can start all of the parallel tasks with the Process Window's Group > Go command.

Note:   No parallel tasks will reach the first line of code in your main routine until all parallel tasks start.

You should be very cautious in placing breakpoints at or before a line that calls MPI_Init() or MPL_Init() because timeouts can occur during initialization. Once you allow the parallel processes to proceed into the MPI_Init() or MPL_Init() call, you should allow all of the parallel processes to proceed through it within a short time. For more information on this, see Avoid unwanted timeouts.