CCL:G: AMD Phenom vs. Intel Quad Q6600

 Sent to CCL by: zhendong zhao [zzhao:-:olemiss.edu]
 Hi,
 In brief, gaussian G03 E01 does not support phenom CPU currently. Please
 read gaussian company notice on AMD phenom CPU. I already had the bad
 experience on phenom 9850.
 I made some unofficial comments on it. I just run simple benchmark
 tests, so please DO NOT use my comments to make your final decision.
 G03 parallel calculations are impossible on Phenom CPU now, the OS will
 hang/dead-lock when you run G03 parallel calculations. The benchmark on
 a single core CPU G03 calculation is still not promising for phenom,
 almost as fast as Q6600.
 I do not think phenom CPU is as fast as Intel Q6600 for gamess. I
 compared running gamess on phenom 9850 with Q6600, the result is not
 promising for AMD phenom. I use gcc and blas-goto to do the test.
 BTW, I am not sure whether the known TLB bug in AMD quad core CPU is
 fixed or not, even it is supposed already fixed. The bug will make
 troubles when you are doing parallel calculations.
 Linux runs stable on AMD phenom CPUs, the unstabilities is from
 parallel calculations.
 Warning, My benchmark tests are too simple, please DO NOT use it as your
 final decision.
 Best regards,
 ZZ
 On Wed, 18 Jun 2008 16:20:49 -0400 "Ol Ga eurisco1,+,pochta.ru"
 <owner-chemistry!^!ccl.net> wrote:
 >
 > Sent to CCL by: "Ol  Ga" [eurisco1**pochta.ru]
 > Hello all,
 >
 > Does anybody know some tests about performance of running Gaussian
 > calculation on 4-core CPUs : AMD Phenom vs. Intel Quad Q6600 via
 > shared memory?
 >
 > Any comments are highly appreciated.
 > Thank you very much in advance.
 >
 > Ol Ga
 >
 >
 >
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