"nstress" tests run on P5 and P6 systems

[wloszczowa]

Hi,

I have run nmem / nram tests on two systems:

1) IBM,9133-55A, 2xP5@2097 MHz, 5120 MB RAM, AIX 5300-07-02-0806
2) IBM,8203-E4A, 2xP6@4204 MHz, 7808 MB RAM, AIX 5300-08-04-0844

Other characteristics of the systems can be found here:

Link:

http://img237.imageshack.us/img237/6017/ibmsystemsnk4.png

Systems were not used during tests (no application, users, etc.)

a results of running nmem and nram are here:

Link:

http://img101.imageshack.us/img101/3255/powerea1.png

Please help me interprete nmem and nram results. Does more ops/sec on P5 system mean that the memory access on Power5 is faster then on P6?


kind regards,
W.

 

[wloszczowa]

any idea?

As I have no Power6 model 550 so I can't compare nmem results with Power system 520... I see there is L3 cache on 550. Anyone did maybe tests on 550?

http://img262.imageshack.us/img262/1589/520vs550op9.png

http://www.ibm.com/developerworks/wikis/display/WikiPtype/nstress

thank you in advance,
Tom.