RAM

2003-11-01, 10:01

I've one question, I have a good machine @ home, it's a P4 2.4GHz@2.6GHz 578MHz FSB a good HD 7200RPM 80GB, and 256MB RIMM-RDRAMM PC1066

.
Now I'm testing my secund number, the first wasn't prime. My secund number is bigger then the first. The number I'm testing is about M33'522'000, no need to be presicely. I'm now testing stage2 and the time showing on my screen are loke this 5sec 4sec 5sec 3sec 4sec 0.1sec 0.3sec 0.2sec 5sec 3sec 4sec and so on. 3 or 4 are very big and 3 or 4 very small, then again big ones and so on. And on stage2 my HD has mutch to work, ut only if I let run Prime95. Could it be that I've to less Memory for that number, or what's the matter that my HD got so mutch to do?
I hope someone can help me and I hope that somone understand what I wrote.

GP2 · 2003-11-01, 13:28

Stage 2 of P-1 testing uses a lot of memory, especially for an exponent in the 33M range. Your computer only has 256MB, it seems that it's doing a lot of swapping.

Look at the file local.ini: what do the lines "DayMemory" and "NightMemory" say? You may need to reduce these and restart Prime95.

2003-11-01, 14:25

I took a look into lokal.ini and that's what I taped in: 229MB day and night. that's the maximum I can enter in the programm.

But why should I reduce that?

Secund question, if I get a Numer, what Prime95 does exactli during tha time testing. most of the things I wnow, like factoring up to 2^68, and the LL in the end, but what does stage1 and stage2 do? is there a link where I can find these informations? Because I don't understand why stage2 needs so mutch memory.

Thanks for all answers

GP2 · 2003-11-01, 15:15

If your computer only has 256MB memory, and you allow Prime95 to use up to 229MB during stage 2 of P-1 testing, that only leaves 27MB for the operating system... not enough.

The fact that your hard drive is doing so much work means that the operating system is doing a lot of swapping, which is not good.

I'd suggest you reduce it to 128MB.

Stage 1 and stage 2 refer to P-1 factoring. Go to http://www.mersenne.org/math.htm, P-1 factoring is described about halfway down the page.

2003-11-01, 15:45

I reduced the aviabel memory for Prime95 like you sayed, and now all works really fast. thanks for your tip, it was really good

. Prime95 now works 10 times that fast as befor. so I now need the same time to calculate up to 100% as I used to get to 9% :surprised.

2003-11-01, 10:01	#1
Brainhacker12 21500₈ Posts	RAM I've one question, I have a good machine @ home, it's a P4 2.4GHz@2.6GHz 578MHz FSB a good HD 7200RPM 80GB, and 256MB RIMM-RDRAMM PC1066 . Now I'm testing my secund number, the first wasn't prime. My secund number is bigger then the first. The number I'm testing is about M33'522'000, no need to be presicely. I'm now testing stage2 and the time showing on my screen are loke this 5sec 4sec 5sec 3sec 4sec 0.1sec 0.3sec 0.2sec 5sec 3sec 4sec and so on. 3 or 4 are very big and 3 or 4 very small, then again big ones and so on. And on stage2 my HD has mutch to work, ut only if I let run Prime95. Could it be that I've to less Memory for that number, or what's the matter that my HD got so mutch to do? I hope someone can help me and I hope that somone understand what I wrote. Last fiddled with by Brainhacker12 on 2003-11-01 at 10:08

2003-11-01, 15:15	#4
GP2 Sep 2003 2·5·7·37 Posts	If your computer only has 256MB memory, and you allow Prime95 to use up to 229MB during stage 2 of P-1 testing, that only leaves 27MB for the operating system... not enough. The fact that your hard drive is doing so much work means that the operating system is doing a lot of swapping, which is not good. I'd suggest you reduce it to 128MB. Stage 1 and stage 2 refer to P-1 factoring. Go to http://www.mersenne.org/math.htm, P-1 factoring is described about halfway down the page. Last fiddled with by GP2 on 2003-11-01 at 15:18

2003-11-01, 15:45	#5
Brainhacker12 6,737 Posts	I reduced the aviabel memory for Prime95 like you sayed, and now all works really fast. thanks for your tip, it was really good . Prime95 now works 10 times that fast as befor. so I now need the same time to calculate up to 100% as I used to get to 9% :surprised. Last fiddled with by Brainhacker12 on 2003-11-01 at 15:49

2003-11-01, 13:28	#2
GP2 Sep 2003 2×5×7×37 Posts	Stage 2 of P-1 testing uses a lot of memory, especially for an exponent in the 33M range. Your computer only has 256MB, it seems that it's doing a lot of swapping. Look at the file local.ini: what do the lines "DayMemory" and "NightMemory" say? You may need to reduce these and restart Prime95.

2003-11-01, 14:25	#3
Brainhacker12 3²·577 Posts	I took a look into lokal.ini and that's what I taped in: 229MB day and night. that's the maximum I can enter in the programm. But why should I reduce that? Secund question, if I get a Numer, what Prime95 does exactli during tha time testing. most of the things I wnow, like factoring up to 2^68, and the LL in the end, but what does stage1 and stage2 do? is there a link where I can find these informations? Because I don't understand why stage2 needs so mutch memory. Thanks for all answers