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Search: Posts Made By: Oleg V.Cat
Forum: Software 2008-11-03, 08:07
Replies: 38
Views: 2,646
Posted By Oleg V.Cat
No ;). 4*XeonMP shoud be CPU 0,2,4,6 (or 1,3,5,7)...

No ;). 4*XeonMP shoud be CPU 0,2,4,6 (or 1,3,5,7) for best performance and lower CPU usage (ThreadsPerTest=1). In this case I have ~0.048s per iteration (all timings are for LL with FFT1280K) with...
Forum: Software 2008-11-02, 17:44
Replies: 18
Views: 1,299
Posted By Oleg V.Cat
Strange, but it's real for my cheap desktop...

Strange, but it's real for my cheap desktop E2160*1.8Ghz. In one worker with one CPU thread I have iteration time approx ~0.090, with two - ~0.055 when CPU is free and ~0.090 in heavy loaded. In...
Forum: Information & Answers 2008-11-02, 17:22
Replies: 7
Views: 1,102
Posted By Oleg V.Cat
I have picture (see attach) like this on 4X Intel...

I have picture (see attach) like this on 4X Intel Xeon MP. (I think, 2xhyperthreading, but not sure). In all cases, task manager show 8CPU, and in this configuration 8 threads from 4 workers try to...
Forum: Information & Answers 2008-11-02, 10:39
Replies: 7
Views: 1,102
Posted By Oleg V.Cat
And if I want to use more than one CPU thread per...

And if I want to use more than one CPU thread per worker?
Forum: Software 2008-11-02, 10:28
Replies: 18
Views: 1,299
Posted By Oleg V.Cat
Having 2 worker threads on double core CPU - that...

Having 2 worker threads on double core CPU - that is a bad idea, especially if you have desktop machine. You can put 2 CPU threads on one worker thread, and get ~50%-70% grater performance.

...
Forum: Software 2008-10-31, 06:20
Replies: 38
Views: 2,646
Posted By Oleg V.Cat
I can say, that sometimes "Smart affinity" is...

I can say, that sometimes "Smart affinity" is very stupid. I do not have problems on single CPU double Core, bur, for example on 4*XeonMP if I put "4 workers 2 threads each" - two of workers go on...
Forum: Software 2008-10-30, 17:14
Replies: 5
Views: 1,446
Posted By Oleg V.Cat
Is it possible to set Affinity for multithreading...

Is it possible to set Affinity for multithreading processing? For example,. “set 3 threads in one worker on logical CPU 0,3 and 5”?

I try to put “Affinity=0,3,5”, but this does not work.
...
Forum: Information & Answers 2008-10-27, 03:48
Replies: 6
Views: 1,125
Posted By Oleg V.Cat
Yep, I re-read the definition. Prime numbers must...

Yep, I re-read the definition. Prime numbers must have two different dividers, not one :smile:.



Oh, no... I am not so addicted to primes :smile:
Forum: Information & Answers 2008-10-26, 10:24
Replies: 6
Views: 1,125
Posted By Oleg V.Cat
Hmmm... Loks like that are just two 10...

Hmmm...

Loks like that are just two 10 digits prime numbers, which are under the following rules:

First digit is a prime.
First 2 digits form a prime
...
First n-1 digits form a prime.
...
Forum: Software 2008-10-26, 08:41
Replies: 280
Views: 28,272
Posted By Oleg V.Cat
I was trying today to migrate from V24 .14 to...

I was trying today to migrate from V24 .14 to V25.7 (Windows-32 versions) on one of my computers. I download version from http://www.mersenne.org/ftp_root/gimps/p95v257.zip (EXE dates 05.10.2008),...
Forum: Lounge 2008-10-26, 08:07
Replies: 5
Views: 1,333
Posted By Oleg V.Cat
Вопрос аналогичный вопросу предидущего ответчика...

Вопрос аналогичный вопросу предидущего ответчика 8)
Showing results 1 to 11 of 11

 
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