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Search: Posts Made By: kriesel
Forum: PrimeNet 2021-04-10, 21:04
Replies: 9
Views: 245
Posted By kriesel
Run of the mill LL wavefront first tests had 2%...

Run of the mill LL wavefront first tests had 2% error rate per test before the addition of the Jacobi check to some of the testing software. CUDALucas still lacks it. So average LL error rate will...
Forum: PrimeNet 2021-04-10, 18:47
Replies: 9
Views: 245
Posted By kriesel
My point #2 was consistent with your own guidance...

My point #2 was consistent with your own guidance posted earlier.

Since LLDC is an inferior check compared to PRP/GEC/proof, it should be phased out. So should LL first test. The error rate is too...
Forum: PrimeNet 2021-04-10, 16:52
Replies: 9
Views: 245
Posted By kriesel
Bravo!

Next in line:


when to cease awarding computing credit for LL first test results
when will an mprime/prime95 version supporting Primenet API issued PRP/GEC/proof as DC of unfortunate LL...
Forum: Miscellaneous Math 2021-04-07, 00:03
Replies: 67
Views: 2,626
Posted By kriesel
I'm done with his posts. ...

I'm done with his posts.

https://mersenneforum.org/profile.php?do=ignorelist
Forum: kriesel 2021-04-05, 23:13
Replies: 20
Views: 6,326
Posted By kriesel
Why don't we merge the leading cpu and gpu applications?

(draft)
Because our best volunteer programmers:
have better uses for their time;
like things as they are now;
aren't that ambitious, crazy or masochistic.

As things stand now, there are...
Forum: GPU Computing 2021-04-04, 22:17
Replies: 4
Views: 194
Posted By kriesel
More on "Big Island"...

More on "Big Island" https://coreteks.tech/articles/index.php/2021/02/10/big-island-gpu-a-brief-architecture-overview/
Memory bandwidth 20% higher than Radeon VII, memory capacity double which would...
Forum: Cloud Computing 2021-04-04, 13:13
Replies: 3
Views: 99
Posted By kriesel
Use the reference info. I've updated the list...

Use the reference info. I've updated the list about halfway down the long page at https://mersenneforum.org/showthread.php?p=521922#post521922

Look for heading "Cloud computing specific reference...
Forum: GpuOwl 2021-04-03, 22:15
Replies: 2,695
Views: 238,695
Posted By kriesel
If you switch early enough in the run, you may...

If you switch early enough in the run, you may get a proof.
Power 2power %max for transition to proof generation version (~point of no return/proof)
10 1024 0.0976
9 512 0.1953
8 ...
Forum: PrimeNet 2021-04-03, 20:00
Replies: 11
Views: 331
Posted By kriesel
... in plane geometry. A couple other fun...

... in plane geometry.
A couple other fun cases:
1) westbound at the equator, turn right 90 deg, proceed to 90deg N. Turn right 90 deg. Proceed to equator (90 deg southward). Turn right 90 deg....
Forum: Marin's Mersenne-aries 2021-04-03, 15:02
Replies: 951
Views: 79,733
Posted By kriesel
In the list following "Exponents with 1 Suspect...

In the list following "Exponents with 1 Suspect result + 1 Unverified result:
These >100M should probably be done with PRP + CERT:"
these are inadequately P-1 factored, and are being P-1 factored...
Forum: PrimeNet 2021-04-02, 21:34
Replies: 6
Views: 894
Posted By kriesel
Yes, the server is effective at dashing the hopes...

Yes, the server is effective at dashing the hopes of a record large P-1 factor in such a case.

It took Alpertron's online ecm calculator (https://www.alpertron.com.ar/ECM.HTM) 1.2 seconds to...
Forum: Data 2021-04-02, 21:27
Replies: 3,373
Views: 261,023
Posted By kriesel
A Radeon VII can do it in a day. Was that a...

A Radeon VII can do it in a day. Was that a request?
Forum: PrimeNet 2021-04-02, 19:54
Replies: 11
Views: 331
Posted By kriesel
:not prime::two cents:That was a sin. You can not...

:not prime::two cents:That was a sin. You can not earn redemption. As your penance say 5 Hail Marys and do 5 PRP/proof assignments as DC of LL first tests by others from the manual assignments page...
Forum: Factoring 2021-04-01, 11:59
Replies: 5
Views: 1,724
Posted By kriesel
There are applications in engineering design...

There are applications in engineering design sometimes for factoring of what mathematicians would consider small to trivial numbers or ratios. Clock drives for equatorial mounts for telescopes or...
Forum: Miscellaneous Math 2021-04-01, 04:06
Replies: 67
Views: 2,626
Posted By kriesel
I count 55 NF lines. That is a very likely...

I count 55 NF lines. That is a very likely outcome for such bit levels.
For probability 1/75, 55 tries, chance of zero factors 48%....
Forum: Operazione Doppi Mersennes 2021-03-31, 16:10
Replies: 377
Views: 57,869
Posted By kriesel
Cool. Did the posted Arch build include the...

Cool. Did the posted Arch build include the expanded 2047M GpuSieveSize? Might want to aim higher, in your test run, for ranges of k and selection of kernel likely to be run in the future, since...
Forum: Lounge 2021-03-31, 14:55
Replies: 4,268
Views: 316,992
Posted By kriesel
The first "computer" I ever assembled or used

3 bits, clock rate ~1 Hz
https://en.wikipedia.org/wiki/Digi-Comp_I
Forum: GpuOwl 2021-03-30, 14:03
Replies: 2,695
Views: 238,695
Posted By kriesel
p-1 v7 vs v6

Two great versions, head to head: P-1 speed, 103M, V6.11-380 vs v7.2-53

XFX Radeon VII, gpu ram clock 1150 MHz, Windows 10 X64 build 19041.867, Celeron G1840 cpu

V6.11-380-g79ea0cc
config.txt:...
Forum: Hardware 2021-03-29, 16:43
Replies: 16
Views: 721
Posted By kriesel
update

I've put up a draft post analyzing logs on the problem gpu for the current exponent running at https://www.mersenneforum.org/showpost.php?p=574709
I can update it there without 1hour edit limit or...
Forum: Information & Answers 2021-03-29, 16:08
Replies: 17
Views: 481
Posted By kriesel
Yes. Patrick Laroche...

Yes. Patrick Laroche (https://www.mersenne.org/primes/?press=M82589933) found one on his fourth test.You're welcome. We'd be glad to have the help. Can I get that million via Paypal to pay my utility...
Forum: Information & Answers 2021-03-29, 15:51
Replies: 17
Views: 481
Posted By kriesel
No. I estimate it falls well short of a "decent...

No. I estimate it falls well short of a "decent shot", if that means more than 1% chance.
Run some rough numbers:
The A100 is rated 746. GHD/d at https://www.mersenne.ca/cudalucas.php
x8 gpus...
Forum: Marin's Mersenne-aries 2021-03-29, 13:57
Replies: 951
Views: 79,733
Posted By kriesel
slaur has: Cat 3 Doublecheck=59659151,74,1 ...

slaur has:
Cat 3
Doublecheck=59659151,74,1
Doublecheck=59661817,74,1
Doublecheck=59893553,74,1
Doublecheck=60040301,74,1
Doublecheck=60116501,74,1
Doublecheck=60178999,74,1...
Forum: kriesel 2021-03-29, 02:00
Replies: 18
Views: 6,970
Posted By kriesel
unreliable gpu case study

The gpu in question is an XFX Radeon VII with 16GB of Samsung ram. It is significantly more error-prone, as indicated by GpuOwl GEC error detections, than the Hynix-ram Radeon VIIs, even at nominal...
Forum: kriesel 2021-03-28, 19:41
Replies: 20
Views: 6,326
Posted By kriesel
Why don't we use interim 64-bit residues as checking input on later runs?

(This idea was first posted as part of https://mersenneforum.org/showpost.php?p=574557&postcount=200)


As far as I recall, no current or past GIMPS software offers this feature.

If a list of...
Forum: GpuOwl 2021-03-28, 19:26
Replies: 82
Views: 9,956
Posted By kriesel
Thanks. No gpu on that system is connected to a...

Thanks. No gpu on that system is connected to a monitor. Monitor attaches to the motherboard VGA connector. The monitor is rarely used. Usually it's Windows Remote Desktop. (MSTSC.exe) Maybe prime95...
Showing results 1 to 25 of 1000

 
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