Forum: Software
2021-09-21, 16:30
|
|
Replies: 8
Views: 1,521
Worth noting that there's quite a bit of beef...
Worth noting that there's quite a bit of beef between GMP and MPIR.
The GMP devs hate Windows and anything Microsoft. It's quite obvious from the tone of language in their mailing lists.
This...
|
|
Forum: y-cruncher
2021-08-19, 16:15
|
|
Replies: 70
Views: 65,590
|
|
Forum: y-cruncher
2021-08-18, 23:10
|
|
Replies: 70
Views: 65,590
I'm not surprised Ian noticed. He's been eyeing...
I'm not surprised Ian noticed. He's been eyeing this record for a while now and knows all the in-and-outs of it. He just needs to source the storage for it before he can make a run for the record.
...
|
|
Forum: y-cruncher
2021-08-18, 16:43
|
|
Replies: 70
Views: 65,590
So this is uh... not great.
Based on my...
So this is uh... not great.
Based on my email convo with Thomas (the guy in charge of the latest Pi computation), it looks like they did not verify the computation. Because when I asked about the...
|
|
Forum: Abstract Algebra & Algebraic Number Theory
2021-08-17, 22:22
|
|
Replies: 10
Views: 15,710
|
|
Forum: y-cruncher
2021-08-17, 22:04
|
|
Replies: 70
Views: 65,590
|
|
Forum: y-cruncher
2021-08-17, 21:44
|
|
Replies: 70
Views: 65,590
I believe it's Chudnovsky.
I'll have to look...
I believe it's Chudnovsky.
I'll have to look take a closer look at your ArcTan formula when I get the time. But my first impression is that yes multiple terms can be run in parallel, but it's not...
|
|
Forum: y-cruncher
2021-08-17, 16:32
|
|
Replies: 70
Views: 65,590
Been so busy lately that I hadn't had time to...
Been so busy lately that I hadn't had time to process this record yet on my site. haha
I need to give y-cruncher a bit of love back. Largely neglected it for almost 2 years now. And lots of...
|
|
Forum: Hardware
2021-08-06, 17:30
|
|
Replies: 12
Views: 1,899
My guess is yes. But whether it makes that much...
My guess is yes. But whether it makes that much of a difference is uh... above my pay grade.
A few years back I was in a company meeting with Intel where they mentioned caches and memory subsystem...
|
|
Forum: Hardware
2021-08-06, 16:40
|
|
Replies: 12
Views: 1,899
My guess is that since these are turbo speeds,...
My guess is that since these are turbo speeds, they will throttle down when actually pushed against the TDP limit.
IOW, even though the i9-10920X has higher turbo speeds, it would probably run...
|
|
Forum: Software
2021-07-18, 21:07
|
|
Replies: 50
Views: 5,557
Worth mentioning that using balanced...
Worth mentioning that using balanced representation cancellation puts you squarely into the "works for average case, but not all cases" category. It is no longer 100% reliable because it's always...
|
|
Forum: Software
2021-07-17, 23:10
|
|
Replies: 50
Views: 5,557
|
|
Forum: Lounge
2021-03-08, 04:51
|
|
Replies: 46
Views: 5,790
~12000 ft while driving across the Rockies....
~12000 ft while driving across the Rockies. Definitely felt lightheaded so tried to get down the other side as soon as possible.
~12000 ft while flying in my colleague's plane (unpressurized). I...
|
|
Forum: y-cruncher
2021-01-06, 17:48
|
|
Replies: 14
Views: 4,953
|
|
Forum: y-cruncher
2021-01-06, 17:47
|
|
Replies: 70
Views: 65,590
Another approach: Ask for any random offset and...
Another approach: Ask for any random offset and if you don't get an answer immediately, then it's suspicious. It would take a tremendous amount of computing power to run get a distant offset in under...
|
|
Forum: Hardware
2020-05-25, 00:01
|
|
Replies: 60
Views: 27,934
|
|
Forum: y-cruncher
2020-02-07, 10:14
|
|
Replies: 70
Views: 65,590
To answer your actual question of how I do the...
To answer your actual question of how I do the conversion "in place". The algorithm is the scaled remainder tree. The only operations are multiplications. There are no additions or subtractions at...
|
|
Forum: y-cruncher
2020-02-07, 09:47
|
|
Replies: 70
Views: 65,590
|
|
Forum: y-cruncher
2020-01-30, 18:56
|
|
Replies: 70
Views: 65,590
31.4 ... 62.8 ... 100 trillion digits of Pi - GWR
So when Google set the record of 31.4 trillion digits last year, I gave it a 50/50 chance that record would fall before the end of the year.
Didn't quite work out that way. This latest computation...
|
|
Forum: Math
2019-12-05, 00:16
|
|
Replies: 1
Views: 2,886
Ideas:
I'm not familiar with the structure...
Ideas:
I'm not familiar with the structure of an optimized mersenne-transform (due to its asymmetry). But if the FFT is out-of-place and you're expending bandwidth to save the integer...
|
|
Forum: ONeil
2019-12-04, 23:55
|
|
Replies: 18
Views: 4,449
|
|
Forum: Hardware
2019-11-05, 21:47
|
|
Replies: 14
Views: 4,600
|
|
Forum: y-cruncher
2019-10-30, 18:33
|
|
Replies: 0
Views: 5,950
Parallel Disk I/O
The topic of parallel disk I/O has been a recurring topic and has just come up again. So I figured I create a thread to keep everything together.
First of all, there's multiple forms of parallel...
|
|
Forum: y-cruncher
2019-10-29, 16:33
|
|
Replies: 15
Views: 10,135
Not sure if I understand what you're referring...
Not sure if I understand what you're referring to.
Right now, swap mode uses one thread per logical path. So you can get multiple threads by using multiple logical paths - thus it's advantageous...
|
|
Forum: Hardware
2019-10-24, 19:15
|
|
Replies: 14
Views: 4,600
Not even close. You'd probably need 8 - 16...
Not even close. You'd probably need 8 - 16 channels to keep LL from bottlenecking on 18-core Skylake X.
The high core count Skylake X's aren't a good value for LL for this reason. You're probably...
|
