From: Jose Vicente Espi (jvespi_at_gmail_dot_com)
Date: Thu Jul 23 2009 - 12:54:58 PDT
Hello, I'm testing performance of UPC communications in an UDP network, comparing it with MPI ping pong bandwith/latency test. But I didn't get the results that I expected, based in the tests made in http://gasnet.cs.berkeley.edu/performance/. I'm probably doing something wrong, functions used for transferring data are upc_memput and upc_memget. Only with message sizes smaller than 512 bytes I get a little better performance than MPI. For larger message sizes performance become worse. Have you got an example of code for measuring performance of UPC vs MPI in ping pong bandwith test? Thanks in advance. Jose Vicente.