Profile explicit communication to the nearest neighbor lab. It illustrates the use of labSend, labReceive, and labSendReceive, showing both the slow (incorrect) and the fast (optimal) way of implementing this algorithm. The problem is explored using the parallel profiler.

Solve an embarrassingly parallel problem with uneven work distribution using for drange. The for drange splits iterations equally. As a result it can do suboptimal load balancing, which is visible using the parallel profiler. The procedures described here are also applicable to other work distribution problems.

Profile the implicit communication that occurs when using an unevenly distributed array.