On 04/07/2010 05:37 PM, Robert Hanson wrote: > On Wed, Apr 7, 2010 at 8:26 AM, Charles Shubert <cshub...@mit.edu> wrote: > >> I'm confused by the 2400% CPU usage claimed below. Does this imply that >> 24 cores of a multicore machine are running at 100%? >> >> I have not been able to get Jmol to run on more than one core of my Mac 8 >> core machine. In looking at the source code for Jmol 11.8.not_too_long_ago >> there seems to be a spot in the script interpreter to launch multiple >> threads which could exploit a multicore machine, but seems to launch only >> one thread to run the script itself. The code for this >> version's interpreter doesn't seem thread safe at first blush, so it doesn't >> seem like it is possible to get more than 100% CPU usage there. >> >> So, my questions are: >> >> - Does Jmol 12 exploit Java multi-threading? >> > > no > So how do you explain the obvious multi-threading during file loading?
While loading 1m4x the multi-threading pulses are rather short at the beginning (1-2 sec) and then 10 sec or more single-threading, but increasing up to about 30 sec later. Regards, Rolf ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Jmol-users mailing list Jmol-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jmol-users
