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-   -   mfaktc: a CUDA program for Mersenne prefactoring (https://www.mersenneforum.org/showthread.php?t=12827)

kracker 2013-01-06 19:11

Awesome! :victor:

Chuck 2013-01-06 19:13

OK I've got it going. If I wanted to reduce the load on the GPU a little bit to cut down on the temperature, are there any settings in mfaktc.ini which would accomplish this?

Great job on this big improvement.

Chuck

kladner 2013-01-06 20:05

Many thanks to all who helped make this possible, either through coding or testing. Most especially, thank you Oliver and George! This is a happy day!

Aramis Wyler 2013-01-06 20:20

Very exciting!
 
repost, eh.

Chuck 2013-01-06 20:22

1 Attachment(s)
Here's my first completed result.

kracker 2013-01-06 20:25

[QUOTE=Chuck;323850]Here's my first completed result.[/QUOTE]

What gpu? 580?

Chuck 2013-01-06 20:35

[QUOTE=kracker;323851]What gpu? 580?[/QUOTE]

Yes; GTX580 @ 797 MHz

Aramis Wyler 2013-01-06 20:38

Exciting day indeed! The processing time for the numbers I'm working on went from ~50 minutes (each, of 4) to ~11 minutes on my gtx 480, So total throughput went up just a bit, I only have to maintain 1 instance/worktodo file, and the cpu is completely unbound now. Starting prime95 on 3 (of 4) cpu cores didn't seem to affect the throughput of the new mfaktc.

I'm curious about the seive though, as on the cpu bound versions it would roll from ~32k down to the minimum (5k) and now it sits solid at 82485.

swl551 2013-01-06 21:26

[QUOTE=Chuck;323843]OK I've got it going. If I wanted to reduce the load on the GPU a little bit to cut down on the temperature, are there any settings in mfaktc.ini which would accomplish this?

Great job on this big improvement.

Chuck[/QUOTE]

Try reducing your Core Clock mhz and maybe your voltage (if you lower clocks enough). Less mhz = less heat.

firejuggler 2013-01-06 22:08

It's working, thanks .

Chuck 2013-01-06 22:26

[QUOTE=swl551;323860]Try reducing your Core Clock mhz and maybe your voltage (if you lower clocks enough). Less mhz = less heat.[/QUOTE]

OK that was helpful. I had never fooled with the voltage adjustment and I did some checking on the net to see how low other people went with the card remaining stable.


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