mfakto: an OpenCL program for Mersenne prefactoring

[Bdot]

I've loaded the windows bits of mfakto 0.13 to http://mersenneforum.org/mfakto/mfakto-0.13/, linux bits follow tomorrow.

Please run the selftest first as usual (-st), and don't forget to send benchmark info to James. Using a single instance with GPU sieve enabled, this can be any normal run.

Have fun and find many factors!

[Manpowre]

Originally Posted by Bdot

I've loaded the windows bits of mfakto 0.13 to http://mersenneforum.org/mfakto/mfakto-0.13/, linux bits follow tomorrow.

Please run the selftest first as usual (-st), and don't forget to send benchmark info to James. Using a single instance with GPU sieve enabled, this can be any normal run.

Have fun and find many factors!

Awesome, tried it with tests, and started trial factoring with this version, and its even faster.,. 25ghz days more on the 6970 card.

Excellent work.

Im impressed.

[kracker]

Originally Posted by Bdot

At 1200MHz (reference default is 1000MHz), this card has about 148% of your 7770@1100MHz (def 1000), or 98% of my 7850@1050MHz (def 860).
This is within 5% of the theoretical #-of-cores x clockspeed comparison.

The stock clocks of the 7770 and 7790 are same, 1000 MHz. I overclocked mine to 1100 MHz.

Originally Posted by Bdot

I've loaded the windows bits of mfakto 0.13 to http://mersenneforum.org/mfakto/mfakto-0.13/, linux bits follow tomorrow.

Please run the selftest first as usual (-st), and don't forget to send benchmark info to James. Using a single instance with GPU sieve enabled, this can be any normal run.

Have fun and find many factors!

Thanks !

[Bdot]

Originally Posted by Bdot

I've loaded the windows bits of mfakto 0.13 to http://mersenneforum.org/mfakto/mfakto-0.13/, linux bits follow tomorrow.

Linux bits are there as well now.

Originally Posted by kracker

The stock clocks of the 7770 and 7790 are same, 1000 MHz. I overclocked mine to 1100 MHz.

Yes, that's what I meant to say. And 7790@1200MHz is 148% of 7770@1100MHz.

[Manpowre]

Originally Posted by Bdot

Yes, that's what I meant to say. And 7790@1200MHz is 148% of 7770@1100MHz.

just to compare porportions, what is the Ghz days on these cards ?

[Bdot]

Originally Posted by Manpowre

just to compare porportions, what is the Ghz days on these cards ?

The 7790@1200MHz should be at ~230 GHz-days/day for factoring between 2⁷⁰ and 2⁷³. From 2⁷³ to 2⁸² it should be around 205 GHz-days/day. The 7770@1100MHz is ~²/₃ of that.

[Manpowre]

Originally Posted by Bdot

The 7790@1200MHz should be at ~230 GHz-days/day for factoring between 2⁷⁰ and 2⁷³. From 2⁷³ to 2⁸² it should be around 205 GHz-days/day. The 7770@1100MHz is ~²/₃ of that.

Thats similar to 6970..

[Bdot]

Originally Posted by Manpowre

Thats similar to 6970..

I think, 6970 should still be 10 or 15% ahead - at stock clock it should reach ~260/230 GHz-days/day for tests below/above 2⁷³, respectively. Is that about what you see?

Note that the mentioned 7790 results are 20% overclocked.

[Manpowre]

Originally Posted by Bdot

I think, 6970 should still be 10 or 15% ahead - at stock clock it should reach ~260/230 GHz-days/day for tests below/above 2⁷³, respectively. Is that about what you see?

Note that the mentioned 7790 results are 20% overclocked.

Yes, I see 235ghz days to 230ghz days in the console.. stock clock.
card is too hot to overclock, the fan for some reason doesnt go above 35%.,. not sure why.. I prob need to get another 3pin connector to test tonight..

[Axelsson]

How could you do that to me! Release a new wersion and calling it stable without letting me bash it for a while...

Anyhow, I have downloaded it and I ran the self test... look what i found!

Selftest statistics                          
  number of tests           287351
  successful tests          287351

selftest PASSED!

Not even I could break this version.... yet...

Great work! Thanks!

/Göran

[Bdot]

There's still time to bash it ... just keep trying

Did you all send a benchmark run to James?