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Search took 0.32 seconds. Search: Posts Made By: VBCurtis
Forum: Aliquot Sequences 2021-01-25, 23:16
Replies: 465
Views: 40,092
Posted By VBCurtis
My two main machines are both solving matrices...

My two main machines are both solving matrices right now, so I'm not available to poly select for a week or so.

As usual, happy to test-sieve our candidates for placement on the f-small queue....
Forum: PrimeNet 2021-01-25, 05:05
Replies: 2,092
Views: 180,084
Posted By VBCurtis
Thank you! One more thing- if you run curves at...

Thank you!
One more thing- if you run curves at some B1 not on the Chart, the server converts the curves to whatever level is currently being counted. The conversion doesn't use fancy math: one...
Forum: PrimeNet 2021-01-25, 01:44
Replies: 2,092
Views: 180,084
Posted By VBCurtis
I think your question means you don't understand...

I think your question means you don't understand ECM well. If an ECM curve would find a factor, increased bounds with the same sigma would also find the factor.

There's a slight loss in...
Forum: PrimeNet 2021-01-24, 20:43
Replies: 2,092
Views: 180,084
Posted By VBCurtis
Sounds like you have a lot of ECM work to do to...

Sounds like you have a lot of ECM work to do to make your reports accurate! :)
Forum: Hardware 2021-01-23, 16:23
Replies: 16
Views: 678
Posted By VBCurtis
If you run linux, download and build CADO-NFS. ...

If you run linux, download and build CADO-NFS.

If you run windows, you'll want Yafu and the programs it calls. Yafu is an organizer of the NFS tasks; it runs the 3 phases of the job I mentioned...
Forum: Hardware 2021-01-23, 05:04
Replies: 3
Views: 149
Posted By VBCurtis
I just noticed your location in Montreal, and the...

I just noticed your location in Montreal, and the partpicker page was Canadian. If those prices were Canadian (as one would expect), then your parts list is about $1250 USD and by the time an $1100...
Forum: Hardware 2021-01-23, 03:49
Replies: 3
Views: 149
Posted By VBCurtis
What you've got there is nearly exactly my HP...

What you've got there is nearly exactly my HP Z620 workstation. They go for about $1000 on ebay in similar configuration (though not with dual 4TB drives, more like a 1TB or 750GB).

I'd trust a...
Forum: Cunningham Tables 2021-01-22, 19:57
Replies: 229
Views: 39,207
Posted By VBCurtis
No plans to use another machine- simply to MPI...

No plans to use another machine- simply to MPI across the two sockets, as the reduction in cross-messaging is reported to give 15-20% speedup compared to the current "msieve -t 20" for the two...
Forum: Hardware 2021-01-22, 18:11
Replies: 16
Views: 678
Posted By VBCurtis
Factoring numbers on Pascal Ochem's lists helps...

Factoring numbers on Pascal Ochem's lists helps to advance the lower bound of a possible odd perfect number. There are two ways to help with this factoring list: running ECM curves to try to find...
Forum: GPU Computing 2021-01-22, 00:39
Replies: 21
Views: 622
Posted By VBCurtis
Bronze and Gold refer to efficiency of the...

Bronze and Gold refer to efficiency of the supply- you should be able to find a percentage effficiency in specs online.

Say the bronze is 82% and the gold 90%. The difference in at-the-wall draw...
Forum: Cunningham Tables 2021-01-21, 15:37
Replies: 229
Views: 39,207
Posted By VBCurtis
597M relations built a 34.4M matrix at TD 100...

597M relations built a 34.4M matrix at TD 100 overnight.

I lost internet connection to the CADO server overnight, so we quit serving workunits at 615M relations. That'll be enough, so we're...
Forum: Hardware 2021-01-21, 15:33
Replies: 16
Views: 678
Posted By VBCurtis
Because that's the largest known prime. He's...

Because that's the largest known prime. He's just saying he's interested in world-record primes. While the stats you cite are true and accurate, there are quite a few searchers who prefer to only...
Forum: Cunningham Tables 2021-01-21, 04:10
Replies: 229
Views: 39,207
Posted By VBCurtis
578M raw relations got me 391M uniques, and a...

578M raw relations got me 391M uniques, and a 39.98M matrix at TD=84.

There was a deficit of 27M in relations vs ideals in the first step of filtering, so I'm continuing to sieve. I think 610M or...
Forum: Hardware 2021-01-20, 18:59
Replies: 16
Views: 678
Posted By VBCurtis
Figure out what software does the calculations...

Figure out what software does the calculations you want, then see how fast that software is on a desktop you can afford, or a free core like Google Colab, or a paid core like AWS.

Without knowing...
Forum: Cunningham Tables 2021-01-20, 17:24
Replies: 229
Views: 39,207
Posted By VBCurtis
OK, I changed target rels to 670M. I'll try...

OK, I changed target rels to 670M. I'll try msieve-filtering this afternoon at ~570M raw rels and report back.
Forum: Cunningham Tables 2021-01-20, 04:19
Replies: 229
Views: 39,207
Posted By VBCurtis
First filtering pass: Tue Jan 19 20:02:16...

First filtering pass:

Tue Jan 19 20:02:16 2021 begin with 368134973 relations and 408812974 unique ideals
Tue Jan 19 20:08:56 2021 reduce to 136356813 relations and 139341382 ideals in 25...
Forum: Cunningham Tables 2021-01-20, 00:44
Replies: 229
Views: 39,207
Posted By VBCurtis
We reached 540M relations, and CADO crashed on...

We reached 540M relations, and CADO crashed on the first filtering step with this error:
Error:Filtering - Duplicate Removal, removal pass: terminate called after throwing an instance of...
Forum: Factoring 2021-01-19, 15:18
Replies: 898
Views: 72,874
Posted By VBCurtis
No, I didn't use 162M uniques. Did you miss a...

No, I didn't use 162M uniques. Did you miss a zero? This job is tougher than the GNFS-207 by quite a lot, and uses bounds which are expected to require more relations (36/33 should require more than...
Forum: Cunningham Tables 2021-01-18, 20:06
Replies: 229
Views: 39,207
Posted By VBCurtis
Q=30-205M complete. 429M raw relations so far, a...

Q=30-205M complete. 429M raw relations so far, a hair under 80% complete.
ETA is Tuesday 4:30pm USA-pacific time.
Estimated ending Q is 255-260M; current yield is close to 2.0.
Forum: Software 2021-01-18, 06:08
Replies: 508
Views: 53,789
Posted By VBCurtis
Whoops! Sorry for the bad information, ssybesma.

Whoops! Sorry for the bad information, ssybesma.
Forum: Software 2021-01-18, 01:25
Replies: 508
Views: 53,789
Posted By VBCurtis
You should not downgrade- an LL test requires a...

You should not downgrade- an LL test requires a double-check, while a PRP with a proof certificate does not. That's why all first-time checks are now PRP.

If you do manage to downgrade and run...
Forum: Cunningham Tables 2021-01-16, 17:48
Replies: 229
Views: 39,207
Posted By VBCurtis
Status update: Q=30-114M complete. 237M...

Status update:
Q=30-114M complete. 237M relations collected, out of a target of 540M. 44% complete.
ETA is Tuesday midday. Estimated ending Q is 240M.
Forum: Cunningham Tables 2021-01-15, 16:44
Replies: 229
Views: 39,207
Posted By VBCurtis
Max's magic beats the CADO group's score for...

Max's magic beats the CADO group's score for RSA-190, on a C191.
Nice find!
Forum: Cunningham Tables 2021-01-15, 00:39
Replies: 229
Views: 39,207
Posted By VBCurtis
56M relations, ETA is now late Wednesday. Surely...

56M relations, ETA is now late Wednesday. Surely that will lengthen when Ed's farm naps, but that's impressive for a day's work!

Q is approaching 47M, so yield is 3.3 so far.

Pretty cool to...
Forum: Cunningham Tables 2021-01-14, 17:37
Replies: 229
Views: 39,207
Posted By VBCurtis
'top' shows 2.6GB per process on my machine. ...

'top' shows 2.6GB per process on my machine. Glad these params work on all your machines, too!

We've already found 20M relations, and ETA is Jan 25th. Naturally, that ETA will stretch out as we...
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