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Forum: Riesel Prime Search 2021-12-03, 01:51
Replies: 101
Views: 27,709
Posted By VBCurtis
If you're going to LLR test the entire file, then...

If you're going to LLR test the entire file, then one should sieve until the factor-removal rate is half as fast (twice the seconds per factor) as an LLR test takes for the smallest candidate in the...
Forum: Miscellaneous Math 2021-12-02, 17:21
Replies: 4
Views: 246
Posted By VBCurtis
You're not going to get many takers to follow...

You're not going to get many takers to follow your links. You can post actual text in this forum, though.
Forum: Aliquot Sequences 2021-12-01, 00:06
Replies: 3,149
Views: 263,815
Posted By VBCurtis
I imagine that after the C221 Cunningham gets the...

I imagine that after the C221 Cunningham gets the poly/params treatment we will come after this one- likely early in the new year.
Forum: Msieve 2021-11-30, 20:12
Replies: 189
Views: 54,268
Posted By VBCurtis
RSA-240, from the paper summarizing the job as...

RSA-240, from the paper summarizing the job as scored by cownoise:
221784.77118 2.95669394e-17

Edit: RSA-250, as scored by cownoise:
382126.36029 7.00754597e-18

A nice discussion of parameter...
Forum: Cunningham Tables 2021-11-29, 23:43
Replies: 9
Views: 601
Posted By VBCurtis
Would Greg like some test-sieving done? I can...

Would Greg like some test-sieving done?
I can try to quantify the tradeoff between 34LP and 34/35 for this job, for instance.
This poly is "good enough", but this is a very big job and saving even...
Forum: Miscellaneous Math 2021-11-29, 05:35
Replies: 431
Views: 40,809
Posted By VBCurtis
Living up to the thread title.

Living up to the thread title.
Forum: Cunningham Tables 2021-11-27, 06:38
Replies: 9
Views: 601
Posted By VBCurtis
If there is little dropoff in score for larger...

If there is little dropoff in score for larger leading coeff's, doesn't that argue for incr-4620 rather than 420? That is, we should take advantage of the slightly better typical poly that an extra...
Forum: Software 2021-11-24, 21:21
Replies: 91
Views: 1,608
Posted By VBCurtis
Depends on how big B2 is, and how big the input...

Depends on how big B2 is, and how big the input is. Once available, experiment. For inputs from this project, two workers and 50GB may be better but for larger inputs a single worker would be. If...
Forum: Conjectures 'R Us 2021-11-24, 17:23
Replies: 1,128
Views: 110,143
Posted By VBCurtis
60-61G complete from 25k-100k. Primes emailed to...

60-61G complete from 25k-100k. Primes emailed to Gary.

ETA on 61-63G is 3 weeks.
Forum: Cunningham Tables 2021-11-24, 05:01
Replies: 317
Views: 45,178
Posted By VBCurtis
I think your CPU will do the job in under a...

I think your CPU will do the job in under a month. We should have factors just before the new year.
Looks like we reach our relations target Wednesday- I suggest Ed point his farm elsewhere tomorrow...
Forum: Cunningham Tables 2021-11-22, 02:37
Replies: 317
Views: 45,178
Posted By VBCurtis
I vote to stop sieving Thursday. That should be...

I vote to stop sieving Thursday. That should be 1.4xG relations, and pretty far down the "more relations makes a smaller matrix" curve. The matrix should be 60M or so by then.

You can use TD of...
Forum: Hardware 2021-11-21, 04:04
Replies: 7
Views: 613
Posted By VBCurtis
What kind of change in FFT speed? Or, what part...

What kind of change in FFT speed? Or, what part of the FFT changes in your hypothetical?

I can't tell if you have something specific in mind (like a software optimization, or FPGA use) but are...
Forum: Cunningham Tables 2021-11-20, 18:31
Replies: 317
Views: 45,178
Posted By VBCurtis
Also, you are correct that filtering and...

Also, you are correct that filtering and matrix-building is single-threaded.
CADO's is multi-threaded, but that doesn't help us here since CADO matrix-solving is so much slower.

If only we knew...
Forum: Cunningham Tables 2021-11-20, 18:05
Replies: 317
Views: 45,178
Posted By VBCurtis
CADO should keep running until we get a...

CADO should keep running until we get a manageable matrix. 73M at 1.25G relations suggests we have another day or three to go; hopefully filtering can be run once a day until the matrix doesn't...
Forum: NFS@Home 2021-11-19, 17:25
Replies: 219
Views: 24,572
Posted By VBCurtis
13_2_912m has built a 26.6M matrix at TD=124, and...

13_2_912m has built a 26.6M matrix at TD=124, and is in postprocessing.
Forum: Software 2021-11-19, 16:59
Replies: 22
Views: 730
Posted By VBCurtis
No. You found out what George already told you:...

No. You found out what George already told you: Prime95 is not the right software for small Mersennes and large bounds.
Forum: Cunningham Tables 2021-11-18, 19:52
Replies: 317
Views: 45,178
Posted By VBCurtis
Naw, I forgot how fast we're gathering relations....

Naw, I forgot how fast we're gathering relations. Default vs TD 100 is a mildly interesting data point for matrix size, but we won't be using either of those matrices so it's not important.

I...
Forum: Cunningham Tables 2021-11-18, 17:37
Replies: 317
Views: 45,178
Posted By VBCurtis
Using...

Using https://mersenneforum.org/showthread.php?t=24054 data as a guide and adding 35% to relations to account for 33/34LP rather than 33LP for all the 16e jobs run on NFS@home, I figured 950M unique...
Forum: Factoring 2021-11-18, 05:17
Replies: 987
Views: 118,520
Posted By VBCurtis
Have you looked at the nfs@home subforum? ...

Have you looked at the nfs@home subforum?

ECM-pretest a candidate to at least the usual depth, test-sieve on the appropriate siever to determine Q-range, and post the job. The size and parameter...
Forum: Cunningham Tables 2021-11-16, 20:15
Replies: 317
Views: 45,178
Posted By VBCurtis
Yay for Seth-stats! Also, nice chart for yield...

Yay for Seth-stats! Also, nice chart for yield per WU.

Boo for learning how little I contributed to the job, but seeing how slow (in rel/sec) my machine sieves is a nice reminder to maybe go...
Forum: CADO-NFS 2021-11-14, 05:14
Replies: 18
Views: 935
Posted By VBCurtis
I think the first half of this thought is in...

I think the first half of this thought is in direct conflict with the second half. Bleeding-edge custom machines are exactly where you fight with hardware, firmware, etc. Buy a quality prebuilt...
Forum: CADO-NFS 2021-11-13, 06:44
Replies: 18
Views: 935
Posted By VBCurtis
My HP Z620 is a dual-Xeon 2680v2, 10 core at...

My HP Z620 is a dual-Xeon 2680v2, 10 core at 2.8Ghz Ivy Bridge era (the one before Haswell). I am running the client instances 10-threaded, with 40 threads occupied. I sampled a dozen or so...
Forum: CADO-NFS 2021-11-12, 22:10
Replies: 18
Views: 935
Posted By VBCurtis
If I were to create a CADO benchmark thread and...

If I were to create a CADO benchmark thread and include in the first post a standard-test file to run (input and parameters), is RSA120 an acceptable size to benchmark? On my older multi-core boxes...
Forum: NFS@Home 2021-11-12, 21:48
Replies: 219
Views: 24,572
Posted By VBCurtis
I screwed this job up- I test-sieved a 32/33...

I screwed this job up- I test-sieved a 32/33 hybrid, and the yield data I posted with the job was from 32/33. After that test, I changed the file to test 33/33, and didn't notice that I failed to...
Forum: CADO-NFS 2021-11-12, 17:29
Replies: 18
Views: 935
Posted By VBCurtis
I wish, as this seems second-most-likely after a...

I wish, as this seems second-most-likely after a motherboard failure.

When the crashes first started a few months ago, they were quite rare (like a batch of 2-3 with 20-40 days of stability in...
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