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Search: Posts Made By: kriesel
Forum: Soap Box 2022-09-27, 22:34
Replies: 207
Views: 43,940
Posted By kriesel
Funding and building a major particle production...

Funding and building a major particle production beamline project is not what I would call routine. Using one eventually becomes routine. But this discussion began with the idea of DoD using...
Forum: Marin's Mersenne-aries 2022-09-27, 19:14
Replies: 32
Views: 4,219
Posted By kriesel
Five or 6 or more are also possible; all ten...

Five or 6 or more are also possible; all ten known prime factors of https://www.mersenne.ca/exponent/1947019199 could be found in P-1 stage 1 to 1M bounds. But these also are well within normal TF...
Forum: Marin's Mersenne-aries 2022-09-27, 18:08
Replies: 32
Views: 4,219
Posted By kriesel
It should be possible to find 4 at a time with...

It should be possible to find 4 at a time with P-1 factoring. The first four factors of https://www.mersenne.ca/exponent/290001377 should be found with B1=40000, B2=35000000
However, in this...
Forum: Soap Box 2022-09-27, 17:37
Replies: 207
Views: 43,940
Posted By kriesel
That's putting it mildly. The first particle type...

That's putting it mildly. The first particle type to exit a star going supernova is neutrinos. Xrays take a long time to get out, but very large quantities of matter are essentially transparent to...
Forum: Soap Box 2022-09-27, 13:52
Replies: 207
Views: 43,940
Posted By kriesel
C-130s go back to the 1950s; LC-130s to 1956....

C-130s go back to the 1950s; LC-130s to 1956. https://en.wikipedia.org/wiki/Lockheed_LC-130
When failure is not an option, as in the last resupply flight of the season to the South Pole Station,...
Forum: Information & Answers 2022-09-27, 02:15
Replies: 26
Views: 915
Posted By kriesel
You're welcome. See...

You're welcome. See https://mersenneforum.org/showthread.php?t=28038,
https://www.mersenneforum.org/showpost.php?p=533168&postcount=31, ...
Forum: Information & Answers 2022-09-27, 01:37
Replies: 26
Views: 915
Posted By kriesel
Dual Xeon E5-2670...

Dual Xeon E5-2670 (https://www.intel.com/content/www/us/en/products/sku/64595/intel-xeon-processor-e52670-20m-cache-2-60-ghz-8-00-gts-intel-qpi/specifications.html), 8 cores x2HT each (16 cores, 32...
Forum: Lounge 2022-09-25, 19:34
Replies: 137
Views: 23,301
Posted By kriesel
It's thought they feel more secure in enclosed...

It's thought they feel more secure in enclosed spaces, from larger predators. Whatever the algorithm is, it's defective, since they've been found to prefer even taped rectangles on a hard floor.
Forum: kriesel 2022-09-25, 17:08
Replies: 14
Views: 9,578
Posted By kriesel
P-1 performance

Mprime / prime95 V30.8 introduces an enhancement in P-1 performance, using polynomials to achieve almost 100% pairing of primes in stage 2. This allows cost-effectively factoring to higher stage 2...
Forum: Tales From the Crypt(o) 2022-09-25, 16:02
Replies: 304
Views: 119,700
Posted By kriesel
Just in case not quite all your internet data is...

Just in case not quite all your internet data is being hoovered up enough yet:
Install the national internet observatory's browser extension!
...
Forum: Software 2022-09-25, 15:38
Replies: 729
Views: 67,487
Posted By kriesel
Questions on prime95 memory limit and location

Contexts first, then questions, in bold font.


Prime95 V30.8b14 appears to limit stage 2 memory settings to ~90% of installed ram.
Reviewing undoc.txt, I did not find a way to adjust that...
Forum: Soap Box 2022-09-25, 13:50
Replies: 405
Views: 21,982
Posted By kriesel
Perhaps because such a flood could provide useful...

Perhaps because such a flood could provide useful camouflage for positioning more members of the GRU (https://en.wikipedia.org/wiki/GRU). Or they're choosing to prioritize Ukrainian refugees, not...
Forum: PrimeNet 2022-09-25, 11:31
Replies: 5
Views: 176
Posted By kriesel
If first run as LL, DC required. If first run...

If first run as LL, DC required.
If first run as PRP without proof generation, PRP DC required. (There was a period of almost 3 years of PRP implemented with GEC but without proof; early September...
Forum: Information & Answers 2022-09-24, 22:15
Replies: 3
Views: 143
Posted By kriesel
Not sure what the problem is at your end; all...

Not sure what the problem is at your end; all looks quite readable in your attachment. Below "Custom" is mostly grayed out because "Blend" is selected, which makes contrast low.
Maybe your display...
Forum: GPU Computing 2022-09-24, 20:12
Replies: 3
Views: 171
Posted By kriesel
BIOS setting does not explain a GPU going from...

BIOS setting does not explain a GPU going from working to unusable in just a power cycle. BIOS setting does not explain a Radeon VII GPU that's dead demonstrably, when cold swapped for a running GPU...
Forum: Software 2022-09-24, 17:16
Replies: 729
Views: 67,487
Posted By kriesel
Also, in prime95 v30.8b14, fft sizes for S1 and...

Also, in prime95 v30.8b14, fft sizes for S1 and S2 of the same P-1 run on an exponent differ from each other, in systematic first P-1 and retry P-1 I have been tabulating. I've seen S2 fft size range...
Forum: GpuOwl 2022-09-24, 14:38
Replies: 2,784
Views: 409,072
Posted By kriesel
I think it's uncorrelated with Samsung HBM2;...

I think it's uncorrelated with Samsung HBM2; neither positively nor negatively correlated.
Because the roa system GPU has Samsung ram, but on the 5-GPU system it's device 1 that has Samsung ram, but...
Forum: PrimeNet 2022-09-23, 20:08
Replies: 14
Views: 770
Posted By kriesel
If still doing P-1, hopefully you're using v30.8...

If still doing P-1, hopefully you're using v30.8 prime95 / mprime or later, and a considerable amount of ram allowed for stage 2 day and night.
There's a thread...
Forum: GpuOwl 2022-09-23, 18:12
Replies: 2,784
Views: 409,072
Posted By kriesel
GPU -> Host read errors

Other configurations that have also had repeated GPU -> Host read errors:
roa; Lenovo 0B98401PRO motherboard, dual Xeon e5-2697v2, Radeon VII directly in PCIe slot
asrock; i7-4790 in Asrock H81...
Forum: GPU Computing 2022-09-22, 22:27
Replies: 10
Views: 570
Posted By kriesel
For more on that, see...

For more on that, see https://mersenneforum.org/showpost.php?p=611082&postcount=1
https://mersenneforum.org/showpost.php?p=613936&postcount=2783
Forum: GpuOwl 2022-09-22, 22:24
Replies: 2,784
Views: 409,072
Posted By kriesel
Anomalously low power operation of radeon vii on windows 10 in gpuowl

System contains a Celeron G1840 on an Asrock H81 Pro BTC R2.0 motherboard, maxed out at 16GiB system ram, and 5 Radeon VII GPUs. This is powered by a 1600W gold rated power supply. The intention is...
Forum: GPU Computing 2022-09-22, 21:03
Replies: 10
Views: 570
Posted By kriesel
I run mine at -20% from nominal power on Windows...

I run mine at -20% from nominal power on Windows which only costs ~-7% throughput. I've seen an occasional card go into an odd mode sometimes in Windows on a multi-RadeonVII system, where 1 card will...
Forum: Software 2022-09-22, 15:22
Replies: 729
Views: 67,487
Posted By kriesel
I briefly suspected my cat of standing on the...

I briefly suspected my cat of standing on the "off" button of a laptop, until I noticed the power cord was not fully inserted into the adapter, and the unit had run on battery for a while. Probably...
Forum: Operazione Doppi Mersennes 2022-09-22, 13:59
Replies: 636
Sticky: Results
Views: 111,095
Posted By kriesel
[Mon Sep 19 03:30:08 2022] UID:...

[Mon Sep 19 03:30:08 2022]
UID: kriesel/emu/gtx1650, no factor for MM127 in k range: 170P to 175P (186-bit factors) [mmff 0.28 mfaktc_barrett188_M127gs]
Forum: Operazione Doppi Mersennes 2022-09-22, 13:23
Replies: 636
Sticky: Results
Views: 111,095
Posted By kriesel
[Wed Sep 21 00:27:12 2022] UID:...

[Wed Sep 21 00:27:12 2022]
UID: kriesel/asr3/rtx2080, no factor for MM127 in k range: 180P to 185P (186-bit factors) [mmff 0.28 mfaktc_barrett188_M127gs]
Showing results 1 to 25 of 1000

 
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