On Sep 9, 2009, at 10:20 AM, ah...clem wrote:
> i never have other apps open when the computations are in > progress. i compared a QS/933 to a QS/1GDP and found that on > computations that required several hours to complete, the 933MHz was > (within 0.5%) exactly 93.3% as fast as the dual 1 gig. the dual > processors feature made absolutely no difference. That's because the applications in question do not use multiple CPU's. INstall Menu Meters on oyur mac and monitor CPU use, you will notice that one CPU maxes out while the other does virtually nothing. gaussian does not support multiple CPUs on OS X, only Unix/Linux (which is dumb because OS X IS Unix, but this isn't the first time I've run into these chem software vendors who thing Mac == OS 9) :<http://www.gaussian.com/g_prod/g09.htm > spartan Wavefront's web site makes no mention whether or not they use multiple CPU's, but it's pretty clear from your discussion, that it doesn't. Compare encoding a DVD in iDVD on one and then the other, or ripping a CD in iTunes on one then the other. You will find that those operations run nearly twice as fast on the dual 1G than they do on the 933. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs --~--~---------~--~----~------------~-------~--~----~ You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -~----------~----~----~----~------~----~------~--~---
