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#1
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Prime 95 not loading cpu 100%
I'm straightening out a friend's new system with a Kuma cpu. I was
astonished to find that prime95's torture test doesn't load up a core 100% -- not even close. Any ideas? -- Ed Light Better World News TV Channel: http://realnews.com Bring the Troops Home: http://bringthemhomenow.org http://antiwar.com Iraq Veterans Against the War: http://ivaw.org http://couragetoresist.org Send spam to the FTC at Thanks, robots. |
#2
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Prime 95 not loading cpu 100%
Ed Light wrote:
I'm straightening out a friend's new system with a Kuma cpu. I was astonished to find that prime95's torture test doesn't load up a core 100% -- not even close. Any ideas? The program could do "small" or "large" FFTs. A large one, won't fit in CPU cache, so there are lots of memory accesses as a result. A small one, might fit within the CPU cache, so there would be reduced memory activity. The small one should run at 100%. The reason for using large FFTs or blend, is so the memory gets tested. The reason for using small FFTs, is to heat up the processor, for those cases that you want to verify the cooling. There are likely programs better than Prime95, for heating. So it isn't a record setter in that respect. In terms of memory settings, some AMD processors have options like "linked" or "unlinked". "Unlinked" allows dual channel memory, to be used as two separate memory banks, and for multithreaded or multiple program usage, it might be a better setting. "Unlinked" may even be the default. You could play with that, or generally with memory frequency or timing, to try to do better than you are right now. ( Some mention of Kuma here. There is L3, so this is a more recent architecture dual core.) http://en.wikipedia.org/wiki/Athlon_....2865nm_SOI.29 Paul |
#3
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Prime 95 not loading cpu 100%
Thanks, Paul. I have more questions but may not be back until the end of the month. -- Ed Light Better World News TV Channel: http://realnews.com Bring the Troops Home: http://bringthemhomenow.org http://antiwar.com Iraq Veterans Against the War: http://ivaw.org http://couragetoresist.org Send spam to the FTC at Thanks, robots. |
#4
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Prime 95 not loading cpu 100%
I'm back.
Haven't played with the Kuma again yet. My Athlon 64 PC was stolen and I've built a P31/Pentium E5200, for the 3 PCI, 3 PCI-E X1, and PCI-E 16. Lots of slots. On it, I've found that you should copy prime95 to another folder, start both prime 95's, and set each to 1 of the cores using the p95 Affinity setting. Then it works ok. -- Ed Light Better World News TV Channel: http://realnews.com Bring the Troops Home: http://bringthemhomenow.org http://antiwar.com Iraq Veterans Against the War: http://ivaw.org http://couragetoresist.org Send spam to the FTC at Thanks, robots. |
#5
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Prime 95 not loading cpu 100%
Ed Light wrote:
I'm back. Haven't played with the Kuma again yet. My Athlon 64 PC was stolen and I've built a P31/Pentium E5200, for the 3 PCI, 3 PCI-E X1, and PCI-E 16. Lots of slots. On it, I've found that you should copy prime95 to another folder, start both prime 95's, and set each to 1 of the cores using the p95 Affinity setting. Then it works ok. I haven't really seen a problem here, and using something like this seemed to be OK. http://majorgeeks.com/Prime95_d4363.html Paul |
#6
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Prime 95 not loading cpu 100%
Paul wrote:
I haven't really seen a problem here, and using something like this seemed to be OK. http://majorgeeks.com/Prime95_d4363.html I'm enjoying the dual core version now. -- Ed Light Better World News TV Channel: http://realnews.com Bring the Troops Home: http://bringthemhomenow.org http://antiwar.com Iraq Veterans Against the War: http://ivaw.org http://couragetoresist.org Send spam to the FTC at Thanks, robots. |
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