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Forum: Miscellaneous Math 2021-03-08, 14:05
Replies: 19
Views: 683
Posted By kriesel
https://en.wikipedia.org/wiki/Grandiose_delusions...

https://en.wikipedia.org/wiki/Grandiose_delusions
https://rationalwiki.org/wiki/Don%27t_feed_the_Troll

Ben Delo and many others run mprime or prime95 via PrimeNet connection. It's likely Ben does...
Forum: GpuOwl 2021-03-07, 20:06
Replies: 197
Views: 15,328
Posted By kriesel
I think that can be approximated in v7.2 by using...

I think that can be approximated in v7.2 by using -iters <N> : run next PRP test for <N> iterations and exit. Multiple of 10000.
Select N to be just over what is required for P-1 stage 1....
Forum: Cloud Computing 2021-03-07, 19:46
Replies: 48
Views: 1,795
Posted By kriesel
That commit is from June 1 2020, somewhere...

That commit is from June 1 2020, somewhere between V6.11-295 and V6.11-318 (I think v6.11-307). There is somewhat more gpuowl performance to be had by reaching ~v6.11-364 to -380, from V6.11-318...
Forum: GpuOwl 2021-03-07, 19:14
Replies: 197
Views: 15,328
Posted By kriesel
Gpuowl speed regression

Among the v7.2 builds I've made and run on Win 10, -53 is fastest. But for straight PRP, v6.11-364 or -380 are faster still. There are some caveats to that result summary; tested on one system &...
Forum: Lounge 2021-03-07, 09:30
Replies: 1,326
Views: 98,861
Posted By kriesel
Secede is the word for parting ways at the state...

Secede is the word for parting ways at the state level, like divorce at the individual level. https://www.ksat.com/news/local/2021/02/01/texas-secession-bill-formally-filed-in-state-legislature/ The...
Forum: Miscellaneous Math 2021-03-06, 14:50
Replies: 19
Views: 683
Posted By kriesel
TF depth decisions in GIMPS are properly made...

TF depth decisions in GIMPS are properly made based on relative performance of TF, P-1, and PRP on the device doing the TF, which should whenever practical be a GPU, with high TF performance relative...
Forum: Miscellaneous Math 2021-03-05, 23:33
Replies: 10
Views: 272
Posted By kriesel
828611 = 7 × 118373 = 7 x p6 = c6 2828611 and...

828611 = 7 × 118373 = 7 x p6 = c6
2828611 and 3828611 are p7's.
Forum: Science & Technology 2021-03-05, 20:57
Replies: 88
Views: 6,628
Posted By kriesel
Location and tree blockage makes a big...

Location and tree blockage makes a big difference. Here, in Wisconsin, utility rate is $0.12/kwhr, available solar to capture is lower, and as of last week 3 emerald-ash-borer-damaged trees that...
Forum: Hardware 2021-03-05, 20:36
Replies: 166
Views: 16,732
Posted By kriesel
prime95 on Windows 10 gave mostly 2 cores/worker...

prime95 on Windows 10 gave mostly 2 cores/worker optimal, until reaching large exponents (~300M). But latency can be long compared to assignment expiration. See second attachment of...
Forum: Lounge 2021-03-05, 17:26
Replies: 1,344
Views: 82,989
Posted By kriesel
"if a tire has a maximum load capacity of 2,000...

"if a tire has a maximum load capacity of 2,000 pounds, but normally carries only 750 pounds, doubling the load to 1,500 pounds is approaching the design limit. Here the traction may only increase...
Forum: Science & Technology 2021-03-04, 19:32
Replies: 88
Views: 6,628
Posted By kriesel
The past decade has changed the numbers a LOT....

The past decade has changed the numbers a LOT. https://pv-magazine-usa.com/2019/12/20/utility-scale-solar-power-as-cheap-as-75%C2%A2-per-watt-says-government-researchers/
Average annual solar energy...
Forum: Lounge 2021-03-04, 19:04
Replies: 1,344
Views: 82,989
Posted By kriesel
Brake pedal force required for shortest possible...

Brake pedal force required for shortest possible stopping distance can exceed the physiological abilities of some drivers. Especially if the power brake assist is weak or absent....
Forum: Lounge 2021-03-04, 17:53
Replies: 1,344
Views: 82,989
Posted By kriesel
F=ma again. Air drag and rolling resistance...

F=ma again.
Air drag and rolling resistance help after the driver stops applying power to sustain speed, but are minor contributions.
If the limit is tire skid or ABS performance, vehicle load...
Forum: Lounge 2021-03-04, 08:58
Replies: 1,344
Views: 82,989
Posted By kriesel
F=ma Curb weight 4800 lb empty; ~5000 with a...

F=ma
Curb weight 4800 lb empty; ~5000 with a driver
Available acceleration force = rear differential output torque divided by effective tire radius. Torque available won't change with increased...
Forum: chalsall 2021-03-03, 14:35
Replies: 10
Views: 375
Posted By kriesel
It's not clear which problem you're facing,...

It's not clear which problem you're facing, server hosted application scaling, or wireless access scaling. The following assumes the latter.
How many limits are there? At least:


Access point...
Forum: Miscellaneous Math 2021-03-03, 13:19
Replies: 19
Views: 683
Posted By kriesel
The P-1 factoring done on...

The P-1 factoring done on https://www.mersenne.ca/exponent/108377323 is quite inadequate. It looks like curtisc has systems with prime95 default memory settings preventing stage 2 P-1. Doing adequate...
Forum: GpuOwl 2021-03-03, 01:11
Replies: 27
Views: 5,479
Posted By kriesel
gpuowl-win v7.2-69-g23c14a1

As usual, build-log.txt separate, everything else in the compressed file. Have not tested it much myself, only generating the help output to a file, and continuing a large-exponent P-1 stage 2...
Forum: Lounge 2021-03-02, 23:37
Replies: 1,683
RIP
Views: 140,278
Posted By kriesel
Revised to 13. Out of about 25 in the SUV. In a...

Revised to 13. Out of about 25 in the SUV. In a vehicle equipped to legally seat 6, design limit ~9....
Forum: PrimeNet 2021-03-02, 22:45
Replies: 8
Views: 306
Posted By kriesel
(lots of good stuff cut, following lightly edited...

(lots of good stuff cut, following lightly edited for visibility)
Not sure where Core I5 vPro (https://www.intel.com/content/www/us/en/products/processors/core/core-vpro.html) = 10 years old is...
Forum: PrimeNet 2021-03-02, 17:05
Replies: 8
Views: 306
Posted By kriesel
Probably yes, but it depends on what hardware,...

Probably yes, but it depends on what hardware, software, assignment mechanism & possibly OS combination(s) you're asking about, and have not indicated. (If you're planning cpu TF, please leave that...
Forum: Forum Feedback 2021-03-02, 03:36
Replies: 18
Views: 590
Posted By kriesel
LL with shift

Consider OP, that there may be unclarity or error in your thinking, programming, and communication. As there may be in mine, after having long ago written LL code (without floating point, without...
Forum: kriesel 2021-03-02, 03:21
Replies: 12
Views: 5,015
Posted By kriesel
LL with shift

(draft)

Think of the primality testing software's math routines as an emulation of a very wide word calculator. It dynamically adjusts to p bits width.

1) All the LL tests should use the same...
Forum: Soap Box 2021-03-01, 23:06
Replies: 25
Views: 1,578
Posted By kriesel
The printer price on sale was about equal to one...

The printer price on sale was about equal to one set of Epson replacement cartridges.
702XL black, and 702 tricolor pack. So, close to giving away the razor to profit from the blades.

Along with...
Forum: Soap Box 2021-03-01, 17:08
Replies: 25
Views: 1,578
Posted By kriesel
Right to reverse a firmware "upgrade"

Epson, not content with a dominant grip on the world inkjet printer market, or 7% compound annual growth rate of the printer market, also wants to monopolize printer ink. A firmware upgrade of...
Forum: GpuOwl 2021-02-27, 17:57
Replies: 27
Views: 5,479
Posted By kriesel
gpuowl-win v7.2-63-ge47361b

As usual, build-log.txt separate, everything else in the compressed file.Have somewhat tested it myself, only generating the help output to a file, and running a test 58M PRP in lieu of LLDC that...
Showing results 1 to 25 of 1000

 
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