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Search: Posts Made By: ATH
Forum: Software 2021-07-19, 15:24
Replies: 347
Views: 35,328
Posted By ATH
At 200K AVX-512 FFT I had to use...

At 200K AVX-512 FFT I had to use "ExtraSafetymargin=0.03" for it to use the next higher 240K FFT, but I guess it depends on how far from the border you are, and maybe on the current FFT.

The next...
Forum: Prime Gap Searches 2021-07-15, 12:18
Replies: 19
Views: 1,008
Posted By ATH
I switched my program from BPSW test...

I switched my program from BPSW test (Miller-Rabin + Lucas) to 2 x Miller-Rabin instead, and it is now twice as fast. I'm pretty sure BPSW test is overkill here. I'm using base 2 and then base 9375,...
Forum: Prime Gap Searches 2021-07-15, 11:36
Replies: 31
Views: 2,082
Posted By ATH
Gratz again! Did you really test everything...

Gratz again!

Did you really test everything up to 264 + 1.249 * 1017 ?
This is 5.36 times further from 264 than your last gap.

What speed are you getting on the 1080 TI ? Either in time per...
Forum: Software 2021-07-09, 17:44
Replies: 36
Views: 1,057
Posted By ATH
I'm not sure you can call this 12-channel RAM. It...

I'm not sure you can call this 12-channel RAM. It is 2 CPU's with 6 channels each. You should definitely run different tests on each physical CPU and each test will get it's own 6-channel RAM.
But...
Forum: Software 2021-07-09, 10:22
Replies: 36
Views: 1,057
Posted By ATH
I have only heard about up to 8-channel memory so...

I have only heard about up to 8-channel memory so far on the newest servers.
Searching for Dell 7920:...
Forum: Lounge 2021-07-06, 18:17
Replies: 25
Views: 773
Posted By ATH
I regularly drive from Copenhagen to Stockholm...

I regularly drive from Copenhagen to Stockholm (2-3 times a year). That is only ~640 km ~400 miles (7.5-8h including 1-2 breaks), but I feel that is plenty for me in a single drive, I'm not sure how...
Forum: Software 2021-06-28, 17:37
Replies: 347
Views: 35,328
Posted By ATH
Yeah I switched it :( In case whoever tested it...

Yeah I switched it :( In case whoever tested it wanted to finish it, then it would not be wasted effort.




I'm working on these 2 and going upwards after them. I'm doing P+1, do I need to do...
Forum: Software 2021-06-28, 05:47
Replies: 347
Views: 35,328
Posted By ATH
@Prime95: Is this strange that there are no...

@Prime95: Is this strange that there are no roundoff errors in Prime95 on AVX-512 200K on these 2 exponents that I got roundoff errors on in mprime? or is it very dependent on the specific processor?
Forum: Marin's Mersenne-aries 2021-06-27, 16:01
Replies: 593
Views: 97,496
Posted By ATH
No, it does not mean stating the exponent here in...

No, it does not mean stating the exponent here in this thread!
It means registering the exponent with the primenet server, so that the server will not hand it out to someone else, and the rest of...
Forum: Software 2021-06-27, 15:50
Replies: 347
Views: 35,328
Posted By ATH
You need help testing AVX-512 or FMA3 candidates?...

You need help testing AVX-512 or FMA3 candidates?

It could be hard to find though, since not all exponents above a certain threshold gives the error.
I turned back to AVX-512 200K FFT for a while...
Forum: Prime Gap Searches 2021-06-27, 15:37
Replies: 19
Views: 1,008
Posted By ATH
Personally in my own CPU program if the first...

Personally in my own CPU program if the first SPRP test is positive I do a Lucas test, so effectively a BPSW test. It is a lot slower than just a Fermat test, but it is almost sure not to find any...
Forum: Forum Feedback 2021-06-26, 21:57
Replies: 33
Views: 1,627
Posted By ATH
I think it looks stretched and squeezed, like a...

I think it looks stretched and squeezed, like a 4:3 aspect movie stretched to a 16:9 screen, which is definitely not a compliment.
Forum: Software 2021-06-25, 19:41
Replies: 347
Views: 35,328
Posted By ATH
Happened again and only for 200K AVX-512, worked...

Happened again and only for 200K AVX-512, worked fine on 200K FMA3. I will leave ExtraSafetymargin=0.03 on for now and use 240K AVX-512.

[Work thread Jun 24 22:19:42] P+1 on M4040059, start=2/7,...
Forum: Prime Gap Searches 2021-06-25, 19:39
Replies: 19
Views: 1,008
Posted By ATH
Post #1948. Seems it was released in version 0.20...

Post #1948. Seems it was released in version 0.20 Dec 2012, about 3 years after the thread started, and SieveOnGPU was set to be automatically on from the start, so no one probably used CPU sieving...
Forum: Prime Gap Searches 2021-06-25, 17:42
Replies: 19
Views: 1,008
Posted By ATH
mfaktc can also sieve on the GPU: SieveOnGPU=1 in...

mfaktc can also sieve on the GPU: SieveOnGPU=1 in mfaktc.ini. It think almost everyone uses that now, and I think it was only in the very beginning of mfaktc that people were using CPU for sieving,...
Forum: Software 2021-06-24, 19:20
Replies: 347
Views: 35,328
Posted By ATH
Weird single exponent FFT issue: I'm doing P+1 in...

Weird single exponent FFT issue: I'm doing P+1 in the 4M range in mprime 30.6b4 and at the exponent M4037479 kept failing with the chosen AVX-512 FFT 200K....
Forum: Data 2021-06-23, 18:18
Replies: 3,424
Views: 285,860
Posted By ATH
Progress the last 3 weeks: 2021-06-23 17:00...

Progress the last 3 weeks:

2021-06-23 17:00 UTC Countdown to verifying all tests below M(57885161): 2562 (1040 available)
2021-06-16 17:00 UTC Countdown to verifying all tests below M(57885161):...
Forum: Prime Gap Searches 2021-06-20, 13:24
Replies: 31
Views: 2,082
Posted By ATH
I mostly saved that "maximal gap" list I made for...

I mostly saved that "maximal gap" list I made for fun starting at 0 at 264, which you already linked.
I did save some gaps > 1000 but only briefly in the beginning. My program jumps ahead the...
Forum: Prime Gap Searches 2021-06-19, 20:27
Replies: 31
Views: 2,082
Posted By ATH
Congratulation! How did you find it, did you...

Congratulation!

How did you find it, did you start at some random location or used some criteria? Which software did you use?

I reached 264 + 1.05*1016 = 18,457,244,073,709,551,616 but I have...
Forum: GPU to 72 2021-06-16, 21:38
Replies: 21
Views: 689
Posted By ATH
Yeah, that worked. But I never had to do that...

Yeah, that worked. But I never had to do that until about 1 week ago. It used to continue showing the spinning start/stop button until the session ended.
Maybe I can close the browser now when it...
Forum: GPU to 72 2021-06-16, 20:40
Replies: 21
Views: 689
Posted By ATH
My instances stopped showing as running in the...

My instances stopped showing as running in the browser the last ~1 week, but they are actually still running, very weird.
Forum: LaurV 2021-06-13, 14:30
Replies: 9
Views: 5,002
Posted By ATH
I can highly recommend this artist: AURORA (real...

I can highly recommend this artist: AURORA (real name Aurora Aksnes from Norway, she turns 25 on Tuesday June 15th):
https://www.youtube.com/c/auroramusic/videos

She is the voice of the "Northern...
Forum: Languages -- Ancient & Modern, Human & Machine 2021-06-12, 16:42
Replies: 17
Views: 6,723
Posted By ATH
KvtT3UyhibQ nc7F_qv3eI8

KvtT3UyhibQ
nc7F_qv3eI8
Forum: PrimeNet 2021-06-11, 06:21
Replies: 13
Views: 853
Posted By ATH
I use that plus disable auto update and auto...

I use that plus disable auto update and auto reboot as a triple protection. Here are the relevant registry keys. You can change those manually in the registry or create a text file called .reg and...
Forum: Software 2021-06-08, 07:00
Replies: 347
Views: 35,328
Posted By ATH
Looks like your test did not generate a proof...

Looks like your test did not generate a proof either. There might be a bug in the proof generation triggering on this exponent.
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