Strategic Double Clicking

[UBR47K]

Requesting a triple check to a CUDALucas DC test
http://www.mersenne.org/report_expon...6131497&full=1

[Mark Rose]

Originally Posted by UBR47K

Requesting a triple check to a CUDALucas DC test
http://www.mersenne.org/report_expon...6131497&full=1

I'll do it.

[Madpoo]

I've been toying with a little different way of trying to find bad systems where we don't quite know they're bad yet.

Previously I've looked at the history of their bad versus good results, but I realized we also have data on how many times each CPU has been double-checked without a match. In cases where the other system has a good track record, I can make an assumption, but most of the time the other CPU is also an unknown quantity... or at least not "awesome" enough to make a bet one way or the other.

But if there's a system with maybe at least as many bad as good, but also has a lot of mismatches under it's belt, I think I can count that as another indicator of badness.

I did a test the past week of taking some of those exponents where maybe the system has an equal amount of bad and good, or even examples where the bad and good are zero but those mismatches are high, and had pretty good success at showing that the first result was bad.

With all of that said, here's a list of exponents below 58M that meet this criteria, based on the system that checked it:

• At least twice as many bad as good
• Mismatches greater-equal than 4

You'll note a couple new columns... "Mis" which is the # of times an exponent by that same CPU has been double-checked without a match, and "Solo" which is the count of exponents done by that system that have only had a single check.

In theory, the # of "solos" and "mismatches" should total the same as the "unknown" and "suspect". "Suspect" results are almost always re-assigned out pretty quick unless it was a larger exponent, by the way.

Questions or comments? No? Good...here's the list: I took the ones in the 48M and 52M ranges for myself just for fun, if anyone wonders why there are gaps there... I had previously done the 54M and up.

exponent	Bad	Good	Unk	Sus	Solo	Mis	worktodo
35987977	23	11	3	8	2	9	DoubleCheck=35987977,71,1
37452329	13	5	12	1	8	5	DoubleCheck=37452329,71,1
37713343	13	6	2	7	1	8	DoubleCheck=37713343,71,1
42014249	13	5	12	1	8	5	DoubleCheck=42014249,72,1
42230479	10	4	5	9	5	9	DoubleCheck=42230479,72,1
42321029	2	0	7	2	5	4	DoubleCheck=42321029,72,1
42395803	10	4	5	9	5	9	DoubleCheck=42395803,72,1
42853367	2	1	5	6	4	7	DoubleCheck=42853367,72,1
42929083	13	5	12	1	8	5	DoubleCheck=42929083,72,1
43558883	22	9	16	21	16	21	DoubleCheck=43558883,72,1
43566329	3	0	6	6	6	6	DoubleCheck=43566329,72,1
43993823	22	9	16	21	16	21	DoubleCheck=43993823,72,1
44861221	3	0	6	6	6	6	DoubleCheck=44861221,72,1
45418559	3	0	6	6	6	6	DoubleCheck=45418559,72,1
45628951	22	9	16	21	16	21	DoubleCheck=45628951,72,1
45912649	3	0	6	6	6	6	DoubleCheck=45912649,72,1
46367329	3	0	6	6	6	6	DoubleCheck=46367329,72,1
46555081	22	9	16	21	16	21	DoubleCheck=46555081,72,1
46561043	22	9	16	21	16	21	DoubleCheck=46561043,72,1
47453207	22	9	16	21	16	21	DoubleCheck=47453207,72,1
47955643	3	0	6	6	6	6	DoubleCheck=47955643,72,1
47963197	18	9	7	10	7	10	DoubleCheck=47963197,72,1
49052473	18	9	7	10	7	10	DoubleCheck=49052473,72,1
49088243	18	9	7	10	7	10	DoubleCheck=49088243,72,1
49440151	18	9	7	10	7	10	DoubleCheck=49440151,72,1
50312729	22	9	16	21	16	21	DoubleCheck=50312729,73,1
50399549	22	9	16	21	16	21	DoubleCheck=50399549,73,1
50401231	22	9	16	21	16	21	DoubleCheck=50401231,73,1
53004233	22	9	16	21	16	21	DoubleCheck=53004233,73,1
53418059	22	9	16	21	16	21	DoubleCheck=53418059,73,1
53418073	22	9	16	21	16	21	DoubleCheck=53418073,73,1
53816729	22	9	16	21	16	21	DoubleCheck=53816729,73,1
53829631	22	9	16	21	16	21	DoubleCheck=53829631,73,1

[Madpoo]

Just had another case of one of my triple checks not matching either of the previous two.

M34938083

If anyone felt like doing a quad check, there it be.

[Prime95]

Originally Posted by Madpoo

Questions or comments? No? Good...here's the list: I took the ones in the 48M and 52M ranges

I took the ones below 43M

[ric]

Originally Posted by Madpoo

If anyone felt like doing a quad check, there it be.

Enqueued.

[Prime95]

Originally Posted by Prime95

I took the ones below 43M

And now I took all those below 47M for another computer

[frmky]

Originally Posted by Prime95

And now I took all those below 47M for another computer

And I took the rest below 50M.

[Madpoo]

Originally Posted by frmky

And I took the rest below 50M.

I'll snag the ones 50M and up... I have a few worktodo files running on empty.

[UBR47K]

Requesting a Double (?Quad?) check on a CUDALucas DC result:
http://www.mersenne.org/report_expon...6125533&full=1

[sdbardwick]

Originally Posted by UBR47K

Requesting a Double (?Quad?) check on a CUDALucas DC result:
http://www.mersenne.org/report_expon...6125533&full=1

I'll do it. ETA <15 hours.