This is not possible. You can not tell certain threads to run on certain cores without modifying the code itself. Also the problems with speechdup/speech dispatcher on multi-core systems relate to the fact that multiple threads run concurrently rather than running in a pre-emptive manner. That is to say on a single core only one process runs at a time; with each process scheduled into running one after the other. The code in speechdup/speech dispatcher needs to be rewritten to take into account the possibility of multiple threads running at once, and your only solution to running this stabily on your system is to disable your second core or run and test cvs code. Without testers it will take far longer to debug these problems; and unless you are willing to run a single core you sacrifice stability regardless of whether the code is cvs or not. cvs is not difficult to use; and you simply check out a source tree which you then build. If you are not used to building from source; perhaps it is necessary to wait for the next stable release of these tools that will be stable and aware of smp systems. Regards, Kerry. ----- Original Message ----- From: "Keith Hinton" <keithint38@xxxxxxxxxxxxx> To: <speakup at braille.uwo.ca> Sent: Sunday, June 24, 2007 6:10 PM Subject: Assistance with a dual-core machine. > Hello all on the ilst, > At this time, (although) I am sure that CVS SpeechD-up/Dispatcher sounds > great, I do not wish to test it..and