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 Showing results 1 to 25 of 1000 Search took 0.55 seconds. Search: Posts Made By: VBCurtis
 Forum: Math 2020-08-09, 03:51 Replies: 10 Views: 174 Posted By VBCurtis False- if you know TF was done to 82 bits, you... False- if you know TF was done to 82 bits, you know to not bother with ECM at the 20-digit level, nor at the 25-digit level. Skip right to T30 (B1=25e4). Similar conclusions can be made about TF...
 Forum: CADO-NFS 2020-08-09, 03:42 Replies: 112 Views: 2,214 Posted By VBCurtis I think 1.93 is an excellent idea. mfb0=59... I think 1.93 is an excellent idea. mfb0=59 should produce a slightly larger matrix than 58, since more of the relations will have a largest-bit large prime. Sieving a few more relations should...
 Forum: CADO-NFS 2020-08-04, 05:03 Replies: 112 Views: 2,214 Posted By VBCurtis I view mfb and lambda both as methods to control... I view mfb and lambda both as methods to control the amount of wasted cofactor-splitting. For reasons unclear to me, CADO runs quite a bit faster (in extensive testing at 100-140 digits) with mfb...
 Forum: CADO-NFS 2020-08-04, 00:44 Replies: 112 Views: 2,214 Posted By VBCurtis That's odd, and means I likely don't understand... That's odd, and means I likely don't understand what lambda does. I thought it was a finer control on mfb, specifically that mfb0 would be lambda0 * lpb0. But 31 * 1.88 is 58.28, meaning mfb0 of 58...
 Forum: NFS@Home 2020-07-31, 15:15 Replies: 60 Views: 5,356 Posted By VBCurtis Thanks! As a first effort, it went OK; hindsight... Thanks! As a first effort, it went OK; hindsight shows that I started CADO at too low a Q (5M), leading to lots more duplicate relations than typical. The C197 from Aliq3366 started at Q=20M, and...
 Forum: NFS@Home 2020-07-31, 00:18 Replies: 60 Views: 5,356 Posted By VBCurtis The Kosta C198 has built a matrix: 50.6M at TD... The Kosta C198 has built a matrix: 50.6M at TD 128. ETA on 12 cores of idle Haswell-Xeon is 1075 hr, using 36GB (according to top). I don't imagine it will remain idle, so it'll be 8 weeks or so to...
 Forum: Factoring 2020-07-30, 15:10 Replies: 8 Views: 265 Posted By VBCurtis Consider the information you have before starting... Consider the information you have before starting ECM versus the information you have after 1000 curves at B1=50k. Before ECM, you have whatever TF data there is to tell you no factors below e..g...
 Forum: Factoring 2020-07-30, 15:03 Replies: 8 Views: 265 Posted By VBCurtis You're welcome to manually set your ECM runs to... You're welcome to manually set your ECM runs to 250k in that range; the server will convert them to a sort-of-equivalent number of 50k curves for the running tally. While it won't change your...
 Forum: NFS@Home 2020-07-29, 18:46 Replies: 60 Views: 5,356 Posted By VBCurtis Thanks! That works. :) I mistyped the... Thanks! That works. :) I mistyped the username on my first try, so the http flags may have worked too.
 Forum: Soap Box 2020-07-29, 18:40 Replies: 69 Views: 1,150 Posted By VBCurtis Since you insert your opinion into pretty much... Since you insert your opinion into pretty much every thread on this forum, educating *you* contributes to the quality of the forum. That's what multiple users are attempting here, but it's surely...
 Forum: NFS@Home 2020-07-29, 18:29 Replies: 60 Views: 5,356 Posted By VBCurtis Thanks, but downloading from NFS@home requires... Thanks, but downloading from NFS@home requires authentication. I was hoping for guidance about the correct flags to use for that (FTP vs HTTP, etc). I tried --http-user and --http-password with the...
 Forum: NFS@Home 2020-07-29, 17:18 Replies: 60 Views: 5,356 Posted By VBCurtis Could someone remind me of the proper invocation... Could someone remind me of the proper invocation of wget for a topped-off relations file? I prefer to not re-download 50GB for the add'l 30M new relations.
 Forum: GPU to 72 2020-07-26, 19:41 Replies: 4,964 Sticky: GPU to 72 status... Views: 217,884 Posted By VBCurtis If we previously really should have been going to... If we previously really should have been going to 78, shouldn't we now reallyshould go to 77? The LL test work is not quite cut in half because of CERT work, so we should move down less than one...
 Forum: Hardware 2020-07-26, 14:58 Replies: 26 Views: 1,013 Posted By VBCurtis What have you run on it? What have you run on it?
 Forum: Hardware 2020-07-23, 22:09 Replies: 26 Views: 1,013 Posted By VBCurtis If I understand Phi correctly, the chip linked in... If I understand Phi correctly, the chip linked in the first post is on a PCI card and needs a special compiler and/or OS, while the system GIMPS purchased was the sole CPU on a motherboard and ran a...
 Forum: Cunningham Tables 2020-07-22, 22:04 Replies: 186 Views: 15,071 Posted By VBCurtis Fine with me- we're not in a big hurry to grab a... Fine with me- we're not in a big hurry to grab a 201-202 for a 15e/home-CADO hybrid. I wager there's less than 10% chance anymore of msieve finding a winning poly for a composite at 200+ digits. I...
 Forum: Lounge 2020-07-20, 22:05 Replies: 1,004 Views: 54,689 Posted By VBCurtis Winner, Mark! Thanks for the laugh. Winner, Mark! Thanks for the laugh.
 Forum: Riesel Prime Search 2020-07-18, 05:12 Replies: 27 Views: 4,905 Posted By VBCurtis Read the definition of Nash weight. Apply it. Read the definition of Nash weight. Apply it.
 Forum: Aliquot Sequences 2020-07-16, 02:42 Replies: 395 Views: 17,610 Posted By VBCurtis Excellent! Be my guest. Also, I'd like to... Excellent! Be my guest. Also, I'd like to reserve 13^60 up to 13^78. I'll start them next week.
 Forum: chalsall 2020-07-15, 20:43 Replies: 35 Views: 668 Posted By VBCurtis Take your 21" 1920 screen and double all... Take your 21" 1920 screen and double all measurements: 42" 3840 screen. I don't think a 49" would be better than a 43" for monitor use- I'd rather add sharpness than size if I were trying to use a...
 Forum: NFS@Home 2020-07-14, 08:08 Replies: 374 Views: 22,258 Posted By VBCurtis You misunderstood- I said a lower TD would take... You misunderstood- I said a lower TD would take less than an hour MORE than TD 120. I made no promises about how long the whole job would take!! (How could I, since I don't know your hardware?) ...
 Forum: Aliquot Sequences 2020-07-14, 08:01 Replies: 395 Views: 17,610 Posted By VBCurtis Well, I've been working in spurts on n=13 for a... Well, I've been working in spurts on n=13 for a couple of years. I have reserved only up to 13^60, but I do plan to cover all of it and I've just 2 sequences left to begin in my reservation to...
 Forum: NFS@Home 2020-07-13, 22:05 Replies: 374 Views: 22,258 Posted By VBCurtis Small jobs don't benefit much from high target... Small jobs don't benefit much from high target densities. Try TD =108 and TD = 120 once you have the new up-to-45M relations, and see for yourself. Even TD = 100 is unlikely to take more than an...
 Forum: Aliquot Sequences 2020-07-13, 22:01 Replies: 457 Views: 26,583 Posted By VBCurtis I'll do some poly select this week; this is a... I'll do some poly select this week; this is a small enough job that I can do the CADO select solo. I'll wait till Tuesday evening or Wed to get started, in case Ryan reserves the job. If someone...
 Forum: Conjectures 'R Us 2020-07-11, 17:32 Replies: 826 Views: 64,103 Posted By VBCurtis Well, a strong majority of them are located on my... Well, a strong majority of them are located on my campus desktop, and the campus is closed likely the rest of the year. Do you prefer I send you what I have now, and the rest when I finally am...
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