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Forum: CADO-NFS 2022-07-07, 06:01
Replies: 96
Views: 22,586
Posted By bur
Is there a new draft for C165?

Is there a new draft for C165?
Forum: CADO-NFS 2022-01-27, 06:47
Replies: 96
Views: 22,586
Posted By bur
I am currently testing the optimal q-min for the...

I am currently testing the optimal q-min for the c170, it seems it's quite large as well. The q-range of the original run was 15M-84M yielding 166.4M uniques. In the q-range 24M-93M I got 169.0M...
Forum: CADO-NFS 2022-01-13, 18:55
Replies: 96
Views: 22,586
Posted By bur
Thanks, the c167 took 12 days of sieving, the...

Thanks, the c167 took 12 days of sieving, the c170 had enough relations already after 15 days, much faster than I anticipated also from c150 and c160 jobs on that machine.


Anyway, I tried again...
Forum: CADO-NFS 2022-01-13, 08:51
Replies: 96
Views: 22,586
Posted By bur
Second attempt with 230M rels and 162M uniques,...

Second attempt with 230M rels and 162M uniques, it went through to the full merge, but quit there. So it's getting closer.

Btw, if C165 to C170 will double the sieving time, what is the time ratio...
Forum: CADO-NFS 2022-01-12, 17:53
Replies: 96
Views: 22,586
Posted By bur
Thanks, but msieve has no equivalent to...

Thanks, but msieve has no equivalent to required_excess?


The first attempt failed as expected. I had 154M uniques (the recent C167 took 152M):
Wed Jan 12 16:44:33 2022 keeping 41220401 ideals...
Forum: CADO-NFS 2022-01-12, 08:31
Replies: 96
Views: 22,586
Posted By bur
Curtis, you suggested excess of 0.05 for building...

Curtis, you suggested excess of 0.05 for building the matrix with CADO. For msieve I think the same effect is achieved with target-density? What would be a good value? Charybdis used target_density =...
Forum: CADO-NFS 2022-01-11, 11:02
Replies: 96
Views: 22,586
Posted By bur
So the poly influences the uniques ratio, but...

So the poly influences the uniques ratio, but "random" meaning not depending on the score? Is the same true for the required number of uniques? This would mean that a slightly lower scoring poly...
Forum: CADO-NFS 2022-01-10, 08:14
Replies: 96
Views: 22,586
Posted By bur
I'm at 190M relations of which 69.7% or 132M are...

I'm at 190M relations of which 69.7% or 132M are unique. The C167 took 152M uniques to build a matrix, what number of uniqes can I expect for a C170?

Is the necessary number of uniques just a...
Forum: CADO-NFS 2022-01-05, 18:17
Replies: 96
Views: 22,586
Posted By bur
Ok, thanks. For the C167 the q-min which lead to...

Ok, thanks. For the C167 the q-min which lead to the smallest required q-range had a ratio of about 6. Maybe it'll be interesting to do a similar test on this C170, or is there already enough...
Forum: CADO-NFS 2022-01-05, 15:16
Replies: 96
Views: 22,586
Posted By bur
Sieving of the C170 is proceeding fine, I'm at...

Sieving of the C170 is proceeding fine, I'm at 121M rels, q = 46M. The yield per 5000 q varies quite strongly, just the last three workunits had 20273, 15446 and 17053, respectively.

I noticed...
Forum: CADO-NFS 2021-10-22, 17:17
Replies: 96
Views: 22,586
Posted By bur
I finished the uniques ratio for a large set of...

I finished the uniques ratio for a large set of different q-min/q-max settings. The data is attached as an xslx file, zipped since for some reason the forum software didn't like the file....
Forum: CADO-NFS 2021-10-07, 16:52
Replies: 96
Views: 22,586
Posted By bur
Total - Uniques - Duplicates - Ratio 10-100M...

Total - Uniques - Duplicates - Ratio

10-100M
214,512,998 - 153,030,781 - 61,482,217 - 71,34%

11-105M
219,448,738 - 158,516,513 - 60,932,225 - 72,23%

12-110M
224,369,197 - 163,859,554 -...
Forum: CADO-NFS 2021-09-23, 18:19
Replies: 96
Views: 22,586
Posted By bur
I did the matrix building to see how many uniques...

I did the matrix building to see how many uniques were required, but yes, it's faster to just do that once and otherwise only use remdups. So I'll do just that? Or is there some merit in using msieve...
Forum: CADO-NFS 2021-09-23, 16:00
Replies: 96
Views: 22,586
Posted By bur
I did some tests on a C167 to see the differences...

I did some tests on a C167 to see the differences between various q-min values.

I sieved in the region q0=10M to q1=108M with the parameters from curtis' file. The I concatenated the sieve files...
Forum: CADO-NFS 2021-09-20, 09:04
Replies: 96
Views: 22,586
Posted By bur
Thanks, that's very helpful. I also found that...

Thanks, that's very helpful. I also found that the commandline is saved to the sieving file.
Forum: CADO-NFS 2021-09-19, 16:08
Replies: 96
Views: 22,586
Posted By bur
I'm currently at mksol for the c167 (took 197M...

I'm currently at mksol for the c167 (took 197M relations). I started sieving at q = 17M. Since you mentioned earlier that a value of 17M was likely too large and the unique percentage is high (76%) I...
Forum: CADO-NFS 2021-09-08, 06:04
Replies: 96
Views: 22,586
Posted By bur
In an older post I saw why that initial c163...

In an older post I saw why that initial c163 sieved so fast:

skew 8385289.96, size 8.965e-16, alpha -7.745, combined = 1.077e-12 rroots = 5
The record is 1.096e-12.
Forum: CADO-NFS 2021-09-07, 12:06
Replies: 96
Views: 22,586
Posted By bur
Ok, good to know. Does it apply to sieving as...

Ok, good to know. Does it apply to sieving as well? I never observed non-utilized cores during sieving.


I started sieving a c167 from 1992:1644 on Sunday using a polynomial I searched previously...
Forum: CADO-NFS 2021-09-02, 17:30
Replies: 96
Views: 22,586
Posted By bur
I didn't know that. For a 10 core should I use 5...

I didn't know that. For a 10 core should I use 5 clients à 4 threads or 10 à 2? And does sieving also benefit from hyperthreading? I didn't notice that problem during sieving.
Forum: CADO-NFS 2021-09-02, 07:59
Replies: 96
Views: 22,586
Posted By bur
I'll factor a c167 soon, did you change anything...

I'll factor a c167 soon, did you change anything in the params file in the meantime? Otherwise I'll use the one I used before but with wanted_rels = 190M. Which was the minimum that worked for the...
Forum: CADO-NFS 2021-06-22, 18:46
Replies: 96
Views: 22,586
Posted By bur
140M wasn't sufficient, but after two additional...

140M wasn't sufficient, but after two additional sievings the matrix was build with:


143466178 relations with 105330573 unique (73.4%)


Again the high number of uniques. Maybe the optimized...
Forum: CADO-NFS 2021-06-18, 07:17
Replies: 96
Views: 22,586
Posted By bur
That was the c159... The number of unique...

That was the c159...

The number of unique relations required for it isn't that much lower than for my c159 with 106,080,857 uniques, but as vbcurtis already mentioned, the ratio of unique/total...
Forum: CADO-NFS 2021-06-17, 08:11
Replies: 96
Views: 22,586
Posted By bur
Ok, I found another C159 from an aliquot...

Ok, I found another C159 from an aliquot sequence. I'm finishing ECM on it and then go with the 0.02 and 140M.

Btw, is there anything else to be done on the c159 or c164, such as target_density?...
Forum: CADO-NFS 2021-06-16, 19:39
Replies: 96
Views: 22,586
Posted By bur
It took 125 hours for the 160M relations. That's...

It took 125 hours for the 160M relations. That's 2800 s / 1M rels or roughly 45 minutes. So yes, nearly 4 hours for 5 M rels.


I'm currently looking for a useful c160, if you want one, then...
Forum: CADO-NFS 2021-06-16, 13:10
Replies: 96
Views: 22,586
Posted By bur
edit: An unexpected P41 factor turned up, but...

edit: An unexpected P41 factor turned up, but I'll look for some other c160 to factor, so if you have new parameters, please let me know.

I'll start work on a c160...
Showing results 1 to 25 of 39

 
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