1) Questions and Answers : Windows : Poor CPU Performance on HT systems ?? (Xeon HT) (Message 92548) Posted 29 Mar 2005 by OhmegaStar Post: Well, Yes I think so too - but i've also seen other xeon class machines with much higher benchmarks - (i still find the numbers low).. see this example; -------------------- http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=36273 CPU type GenuineIntel Intel(R) Xeon(TM) CPU 3.06GHz Number of CPUs 4 Measured floating point speed 2998.48 million ops/sec Measured integer speed 8998.8 million ops/sec -------------------- -------------------- http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=138525 CPU type GenuineIntel Intel(R) Xeon(TM) CPU 3.06GHz Number of CPUs 4 Measured floating point speed 2979.01 million ops/sec Measured integer speed 8978.74 million ops/sec -------------------- I really wonder.... maybe i should just try to turn off HT and see... /Henrik

2) Questions and Answers : Windows : Poor CPU Performance on HT systems ?? (Xeon HT) (Message 92525) Posted 29 Mar 2005 by OhmegaStar Post: Hi All, I have a workstation which crunch for me all the time, i'm however puzzled of the relative poor numbers htese pretty hefty cpus are getting from the cpu benchmark; ------------------ CPU type GenuineIntel Intel(R) Xeon(TM) CPU 3.06GHz Number of CPUs 4 (thats 2 hyperthreaded cpus) Measured floating point speed 1363.35 million ops/sec Measured integer speed 1123.04 million ops/sec ------------------ I think thats pretty low numbers... heres what a non ht p4 is getting; ----------------- CPU type GenuineIntel Intel(R) Pentium(R) 4 CPU 2.53GHz Number of CPUs 1 Measured floating point speed 1328.72 million ops/sec Measured integer speed 2703.29 million ops/sec ----------------- Whats happening - is boinc setin not ht compliant / optimized - or does it just not runn well on xeon cpus ?? do i need to disable the ht feature of my xeon processors ?? /Henrik

 
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