As far as Hyperthreading goes, It is already available in the P4 Xeon chips. I have personally tested the effectiveness with Prime95, and it does nothing for our testing. The 2 instances ran normally, but each one took twice as long as 1 instance would have. I think the only benefit Hyperthreading adds to any application, is that if a pipeline becomes stalled, another thread can use the 2nd pipeline, where on a standard P4, if one pipeline is stalled, the other has to wait for it.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Eric Hahn Sent: Friday, March 01, 2002 7:17 PM To: [EMAIL PROTECTED] Subject: Mersenne: Hyper-threading Found this article on News.com about the new Pentium 4's coming out next year... code-named Prescott. It mentions a speed of 4GHz... and the use of hyper-threading... Hyper-threading is supposed to allow two applications or application threads to run on one processor at the same time... by allowing one application (or thread) to use parts of the processor it needs... and the second application (or thread) to use others... Esentially this could speed up testing even more... by having one thread of Prime95 use the FPU... while another uses the IAU... The article also mentions AMD's Clawhammer due out the end of this year... able to run 64-bit applications... This could significantly reduce the number of adds/multiplies required for testing.... _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
