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Search: Posts Made By: fivemack
Forum: NFS@Home 2020-09-05, 09:18
Replies: 55
Views: 1,341
Posted By fivemack
Should I still be running my GNFS-20x Fibonacci...

Should I still be running my GNFS-20x Fibonacci numbers locally rather than trying to queue them up on _fs? I've upgraded the shed slightly (bargainhardware finally got cheap thoroughly-generic E5v3...
Forum: GPU Computing 2020-08-23, 23:19
Replies: 0
Views: 341
Posted By fivemack
ECM performance on GTX2000-series

Has anyone got benchmark figures for gmp-ecm-gpu running on GTX2000-series hardware? My GTX1080Ti seems to have completely given up the ghost.

(though obviously I should be waiting for...
Forum: chalsall 2020-07-18, 21:07
Replies: 35
Views: 960
Posted By fivemack
Is there a window manager anywhere which lets you...

Is there a window manager anywhere which lets you assign N workspaces to M monitors, rather than having N workspaces each the size of the whole monitor collection? Having code on one monitor and...
Forum: chalsall 2020-07-16, 08:47
Replies: 35
Views: 960
Posted By fivemack
I’ve used a Raspberry Pi 4 attached to a 55” UHD...

I’ve used a Raspberry Pi 4 attached to a 55” UHD screen quite successfully. Remember you’re sitting further back from a big TV; with it at the back of the small dining table I use as a desk, there’s...
Forum: chalsall 2020-07-15, 09:16
Replies: 35
Views: 960
Posted By fivemack
I think this is an issue with window managers...

I think this is an issue with window managers rather than with pixels, because it's fairly clear that people got quite a lot of software development work done in the days when you could tell a...
Forum: Linux 2020-06-23, 09:30
Replies: 3
Views: 816
Posted By fivemack
systemd-resolved forgets to use local DNS

About every other day, my ubuntu-18.04 machines forget that I have a local DNS server. I can get them to remember by restarting systemd-resolved, but does anyone know where that service keeps its...
Forum: Cunningham Tables 2020-06-06, 11:12
Replies: 73
Sticky: 10- table
Views: 15,909
Posted By fivemack
I'm unsure as to whether R323 is accessible with...

I'm unsure as to whether R323 is accessible with the 16e siever. It seems that x^6-10 sieves slightly better than the octic, but with a yield of about 0.8 relations per Q the search range is...
Forum: Factoring 2020-05-22, 07:46
Replies: 498
Views: 57,019
Posted By fivemack
L4375B done

This popped up on the Mersennus.net page and I managed to complete it in three real-time weeks on one machine (I'll admit it was an i9-7940X so quite a fast machine) - 2.5 days polynomial search, a...
Forum: NFS@Home 2020-04-24, 20:48
Replies: 64
Views: 7,050
Posted By fivemack
L4635A complete

Fri Apr 24 13:58:34 2020 p62 factor: 54473084981910910373895572374171513288488971021552223758184061
Fri Apr 24 13:58:34 2020 p134 factor:...
Forum: Factoring 2020-04-19, 13:45
Replies: 1
Views: 942
Posted By fivemack
Dividing out by the counts of prime ideals (which...

Dividing out by the counts of prime ideals (which are just length(polrootsmod(f,p)) ) gives something with much nicer statistical properties - the linear fit has an r^2 of 0.998 rather than 0.957,...
Forum: Factoring 2020-04-15, 10:48
Replies: 1
Views: 942
Posted By fivemack
Yields with 16e

This is a 16e factorisation of a GNFS-200.0 number (and about a third complete)

I am a little surprised that, with alim=rlim=400M, I'm seeing the yield increasing monotonically as Q goes down all...
Forum: NFS@Home 2020-03-31, 14:24
Replies: 64
Views: 7,050
Posted By fivemack
L4635A started

ETA 23 April evening
Forum: Aliquot Sequences 2020-03-26, 16:36
Replies: 3,328
Views: 253,487
Posted By fivemack
Taking 661998

Taking 661998
Forum: Aliquot Sequences 2020-03-26, 16:36
Replies: 3,328
Views: 253,487
Posted By fivemack
Drop 642768 (2^2 * 269 * ECMed C141)

Drop 642768 (2^2 * 269 * ECMed C141)
Forum: Information & Answers 2020-03-22, 10:20
Replies: 3
Views: 1,038
Posted By fivemack
Run memtest (a modern version, download from...

Run memtest (a modern version, download from memtest86.com rather than using the version that appears in your boot-loader menu); those squashfs errors look like defective memory modules to me.

The...
Forum: Factoring 2020-03-21, 07:04
Replies: 498
Views: 57,019
Posted By fivemack
Currently running L4235A C201, which is going to...

Currently running L4235A C201, which is going to take quite a while; will do 145!-1 after that. With the plague now and a baby due in June I doubt my hardware resources will grow in the next 18...
Forum: Factoring 2020-03-21, 00:04
Replies: 498
Views: 57,019
Posted By fivemack
167!-1 done

Fri Mar 20 19:48:18 2020 p78 factor: 339681113011636637534097684131750881577621867753623483183030698483021419238073
Fri Mar 20 19:48:18 2020 p104 factor:...
Forum: NFS@Home 2020-03-20, 09:49
Replies: 64
Views: 7,050
Posted By fivemack
F1645 complete

Thu Mar 19 22:12:36 2020 p75 factor: 124480030191217022570101563396234688664281201878322907744151618458267884541
Thu Mar 19 22:12:36 2020 p124 factor:...
Forum: NFS@Home 2020-03-09, 18:25
Replies: 64
Views: 7,050
Posted By fivemack
There will be a delay; the job crashed early...

There will be a delay; the job crashed early morning 7 March and the machine is currently unresponsive over the network and moreover in a different city from me.

(there will be more of a delay; I...
Forum: NFS@Home 2020-03-09, 13:24
Replies: 64
Views: 7,050
Posted By fivemack
L2965B complete

Sat Mar 7 00:57:47 2020 p117 factor: 130793892095011010261570807276990949088253001123492162239158601294648700615532642298214759019715949581932350224038801
Sat Mar 7 00:57:47 2020 p126 factor:...
Forum: Factoring 2020-03-06, 14:26
Replies: 3
Sticky: RSA-250
Views: 5,033
Posted By fivemack
So it's still a factor three more runtime for ten...

So it's still a factor three more runtime for ten more digits at the 240-digit level; interesting to know. Maybe slightly lower for the linear algebra.

(800/100 X6130-core-years for RSA240;...
Forum: Information & Answers 2020-03-01, 20:36
Replies: 15
Views: 2,251
Posted By fivemack
I do wish that operating system manufacturers...

I do wish that operating system manufacturers would provide a version that unleashes the full speculation potential of our hardware, for people actually wanting to do computation rather than checking...
Forum: NFS@Home 2020-03-01, 09:52
Replies: 64
Views: 7,050
Posted By fivemack
L2965B eta morning of March 7

L2965B eta morning of March 7
Forum: Astronomy 2020-02-24, 18:55
Replies: 10
Views: 1,241
Posted By fivemack
I hadn't heard of using asteroid occultations to...

I hadn't heard of using asteroid occultations to measure stars - I guess there's much less stray light than the lunar-limb method, and you can do it for stars that don't get occulted by the Moon.
Forum: Factoring 2020-02-20, 11:36
Replies: 42
Views: 5,288
Posted By fivemack
So that's a significantly larger and heavier...

So that's a significantly larger and heavier matrix than the RSA-768 factorisation from INRIA; what was the point of doing all that computation to demonstrate they were less effective at factoring a...
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