Too few factors found in 600M to 620M

alpertron · 2020-11-26, 01:06

I've just looked at https://www.mersenne.ca/status/tf/0/1/2/60000 and I found that there should be some hardware error:

21192 factors in the range 600M-610M today in the 72-bit range: only 3 factors found.
3268 factors in the range 610M-620M today in the 72-bit range: only 2 factors found.

In the first case there should be about 300 factors (maybe 200, but not 3). In the second case there should be about 45 factors, not 2.

It appears that the GPU being used is not helping the project.

S485122 · 2020-11-26, 02:13

Quote:

Originally Posted by alpertron

I've just looked at https://www.mersenne.ca/status/tf/0/1/2/60000 and I found that there should be some hardware error:

21192 factors in the range 600M-610M today in the 72-bit range: only 3 factors found.
3268 factors in the range 610M-620M today in the 72-bit range: only 2 factors found.

In the first case there should be about 300 factors (maybe 200, but not 3). In the second case there should be about 45 factors, not 2.

It appears that the GPU being used is not helping the project.

Probably a case of submitting the results with factors found one day and the others the next. On the 24^th, 162 successful and 0 unsuccessful attempts where reported in the 605M range.

Jacob

Mark Rose · 2020-11-26, 02:25

Appears to be so. Looking over a week and the numbers look reasonable: https://www.mersenne.ca/status/tf/0/7/2/60000

alpertron · 2020-11-26, 02:28

Thanks. So this was a false alarm.

Madpoo · 2020-12-05, 04:39

Quote:

Originally Posted by Mark Rose

Appears to be so. Looking over a week and the numbers look reasonable: https://www.mersenne.ca/status/tf/0/7/2/60000

There are a few users who submit their factoring work in separate batches of "no factor" and "factor". No idea why, since it seems like extra work to filter them into the separate piles, but whatever.

So that does mean there are strange spikes in factors found. But the line does smooth out over longer periods of time, and that's where you'd look to try and spot weirdness.

pinhodecarlos · 2020-12-05, 08:59

SRBase uploads in batches, but not continuous since some assignments can have a delay by BOINC users, have seen a few with 45 days delay. Anyway, all ranges will get done eventually.

pinhodecarlos · 2020-12-23, 09:12

Just using this thread to give you guys some feedback why the increase of SRBase output. There’s an interesting fight for third place at the boinc formula overall standings. Final figures within 8 days.

2020-11-26, 01:06	#1
alpertron Aug 2002 Buenos Aires, Argentina 2504₈ Posts	Too few factors found in 600M to 620M I've just looked at https://www.mersenne.ca/status/tf/0/1/2/60000 and I found that there should be some hardware error: 21192 factors in the range 600M-610M today in the 72-bit range: only 3 factors found. 3268 factors in the range 610M-620M today in the 72-bit range: only 2 factors found. In the first case there should be about 300 factors (maybe 200, but not 3). In the second case there should be about 45 factors, not 2. It appears that the GPU being used is not helping the project. Last fiddled with by alpertron on 2020-11-26 at 01:06

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2020-11-26, 02:25	#3
Mark Rose "/X\(‘-‘)/X\" Jan 2013 B73₁₆ Posts	Appears to be so. Looking over a week and the numbers look reasonable: https://www.mersenne.ca/status/tf/0/7/2/60000

2020-11-26, 02:28	#4
alpertron Aug 2002 Buenos Aires, Argentina 2²·337 Posts	Thanks. So this was a false alarm.

2020-12-05, 08:59	#6
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3³·181 Posts	SRBase uploads in batches, but not continuous since some assignments can have a delay by BOINC users, have seen a few with 45 days delay. Anyway, all ranges will get done eventually.

2020-12-23, 09:12	#7
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 4887₁₀ Posts	Just using this thread to give you guys some feedback why the increase of SRBase output. There’s an interesting fight for third place at the boinc formula overall standings. Final figures within 8 days.