HW11 - Plot Problem 1

[Dan Negrut]

Attach here your log-log plot.

Problem1Plot.png (50.27 KiB) Viewed 13949 times

Green is for Broadcast
Blue is for plain Send()/Recv()

Error bars represent the standard deviation from a sample size of 10 at each array size.

results.png (13.1 KiB) Viewed 13937 times

Comparison of group communication methods over a range of data transfer sizes.

MPI_Bcast() vs MPI_Send()/MPI_Recv() pairs for group communication.

GroupPlot.png (132.93 KiB) Viewed 13936 times

Point-to-point Send/Receive vs. MPI_Bcast

Used 1 node and 8 ppn on euler25. All data points are the average of six runs.

HW11_q1.png (39.56 KiB) Viewed 13897 times

Here's the plot of my run times for the MPI_broadcast function vs. a hand written for loop with send and receive calls. I used 2 nodes with 8 ppn.
John

Assignment11Plot.PNG (20.38 KiB) Viewed 13896 times

I used 4*4 nodes

Youming Yang

Plot 1 attached.

Plot attached.
-Travis

-Chuck

HW11_Problem1.png (18.11 KiB) Viewed 13853 times

Attached

Problem 1 :