The last mention I see of this problem was 10 months ago. It is starting to bug me that when I find big factors with mfaktc I get tiny ECM credit. Is there some trick I need to know to submit factors and get the appropriate credit?

submitted
M980261 no factor from 2^62 to 2^63, We4: 096B068C
M864917 no factor from 2^62 to 2^63, We4: 086205CA
M2831687 has a factor: 419541074737331003927 [TF:68:69:mfaktc 0.18 barrett79_mul32]
found 1 factor for M2831687 from 2^68 to 2^69 [mfaktc 0.18 barrett79_mul32]

response
No factor lines found: 2
Processing result: M980261 no factor from 2^62 to 2^63, We4: 096B068C
CPU credit is 1.0014 GHz-days.
Processing result: M864917 no factor from 2^62 to 2^63, We4: 086205CA
CPU credit is 1.1350 GHz-days.
Mfaktc no factor lines found: 0
Mfakto no factor lines found: 0
Factors found: 1
Processing result: M2831687 has a factor: 419541074737331003927
Insufficient information for accurate CPU credit.
For stats purposes, assuming factor was found using ECM with B1 = 50000.
CPU credit is 0.1150 GHz-days.
P-1 lines found: 0
LL lines found: 0
Mlucas lines found: 0
Glucas (G29) lines found: 0
Glucas lines found: 0
MacLucasFFTW lines found: 0
CUDALucas lines found: 0
ECM lines found: 0

Try adding a "no factor" line produced by mfactc BEFORE the line showing the factor. Make a generic one, even for different exponent, existent result, etc, if you don't have a "real" one. You may not get credit for it, but it will instruct the parser that the following result (the "factor found" line) was done by mfaktc and get the proper credit.

OTOW, are you wasting CPU times to do TF ?!? If you want to TF lower expo (under 1M) then ask oliver for the version of mfaktc that does lower expos, and you be 10 times faster on doing that (assuming you have a gpu, or else, better use CPU ticks to do p-1).

[QUOTE=LaurV;316934]OTOW, are you wasting CPU times to do TF ?!? If you want to TF lower expo (under 1M) then ask oliver for the version of mfaktc that does lower expos, and you be 10 times faster on doing that (assuming you have a gpu, or else, better use CPU ticks to do p-1).[/QUOTE]
Doing TF on low expos is a waste of time. PERIOD. Just do ECM, if you must.

Sent him a PM with that very request yesterday. I enjoy working on small exponents. It may be nostagia for the early days. I get perverse pleasure from finding a factor for an exponent that I first LL'ed back in 1997.

I have a 560Ti, 580 and two 7970's, plus 16 other boxes without GPUs.

My pre-V4 ID did not get moved over due to a lapse in activity during the critical time. Hence, the 2005 join date.

[QUOTE=dbaugh;316937]Sent him a PM with that very request yesterday. I enjoy working on small exponents. It may be nostagia for the early days. I get perverse pleasure from finding a factor for an exponent that I first LL'ed back in 1997.

I have a 560Ti, 580 and two 7970's, plus 16 other boxes without GPUs.

My pre-V4 ID did not get moved over due to a lapse in activity during the critical time. Hence, the 2005 join date.[/QUOTE]
How do your 7970s perform for GPU TF? What processor do you drive them with?

[QUOTE=flashjh;316951]How do your 7970s perform for GPU TF? What processor do you drive them with?[/QUOTE]

I believe the 7970 does about ~330 GHz/days a day, the GHz edition about 370~

Just for ya info, a 7970 is about ~400$, ghz is ~450$.

[QUOTE=kracker;316954]I believe the 7970 does about ~330 GHz/days a day, the GHz edition about 370~

Just for ya info, a 7970 is about ~400$, ghz is ~450$.[/QUOTE]
I ask because on [URL="http://www.mersenne.ca/mfaktc.php"]James' site[/URL] the 7970 is 1 above the 580 on the list. I'm wondering what CPU is driving the 7970 and what real performance output is achieved.

James' list shows a 580 @ 287.5GHz-days/day. I actually get ~400GHz-days/day.

[QUOTE=flashjh;316955]I ask because on [URL="http://www.mersenne.ca/mfaktc.php"]James' site[/URL] the 7970 is 1 above the 580 on the list.
James' list shows a 580 @ 287.5GHz-days/day. I actually get ~400GHz-days/day.[/QUOTE]Please submit your benchmarks (submission form at the top of that page).

[QUOTE=James Heinrich;316956]Please submit your benchmarks (submission form at the top of that page).[/QUOTE]
It's been a while... do you have a standard test you want run? Just one instance with nothing else running, correct?

[QUOTE=flashjh;316958]It's been a while... do you have a standard test you want run? Just one instance with nothing else running, correct?[/QUOTE]

Looking [URL="http://mersenne.ca/mfaktc.php#"]here[/URL], it seems there is a submission form.

[QUOTE=flashjh;316958]It's been a while... do you have a standard test you want run? Just one instance with nothing else running, correct?[/QUOTE]The details are on the [url=http://www.mersenne.ca/mfaktc.php#benchmark]submission form[/url].
Since instance of mfakt_, SievePrimes set to 5000.