-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 14 May 2008 17:14 pm, James Sutherland wrote:
Okay, then I am interpreting things correctly, and my internal timer seems to be consistent with the output of the "time" command that you refer to. To restate, the sum of "real" and "system" time is the pertinent measure. The results you posted then indicate that there is no speedup associated with increasing the number of threads. I am now seeing the same thing...
No, the "real" time is the pertinent measure. I'm saying the program took 4.991s to complete with 2 threads and 9.668s to complete with 1 thread. You might be less confused if you increase the number of loops in operator() so the program is slow enough you can measure the execution time by watching a clock. - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIK1hd5vihyNWuA4URAiKqAJ4zLf0bhnC1cbjsCcxwCskHhU9ZqACeIE6S 79NY0j69nLY1gSTqN68doQg= =DAhJ -----END PGP SIGNATURE-----