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Search: Posts Made By: kriesel
Forum: Science & Technology 2020-11-25, 01:26
Replies: 33
Views: 593
Posted By kriesel
Tuck the nose cone tip of one into an engine...

Tuck the nose cone tip of one into an engine nozzle of the next, to accommodate a few otherwise excess meters. https://en.wikipedia.org/wiki/Rocketdyne_F-1...
Forum: Science & Technology 2020-11-22, 14:10
Replies: 33
Views: 593
Posted By kriesel
That "call-back" was way earlier than reasonable...

That "call-back" was way earlier than reasonable to expect, unless assuming a nearby listening post.
Forum: Science & Technology 2020-11-21, 02:51
Replies: 33
Views: 593
Posted By kriesel
Quick, give the complete correlated load and...

Quick, give the complete correlated load and corrosion history of every portion of the structure, in ANSYS input compatible form.

...
Forum: GPU Computing 2020-11-21, 02:40
Replies: 88
Views: 18,610
Posted By kriesel
Look for patterns to the fails. If they're all...

Look for patterns to the fails. If they're all above 80 bits, it could perhaps be used in the 70s.
Forum: Hardware 2020-11-20, 23:06
Replies: 102
Views: 5,732
Posted By kriesel
Manual says there's a pad pair to short with a...

Manual says there's a pad pair to short with a screwdriver blade with power off.
Forum: Hardware 2020-11-20, 23:04
Replies: 102
Views: 5,732
Posted By kriesel
Don't know. There may be a reason why it was...

Don't know. There may be a reason why it was hidden away like that. Trace if possible. Or get something like...
Forum: Lounge 2020-11-20, 15:50
Replies: 4,127
Views: 263,644
Posted By kriesel
Thanks for prepaying your first 3 months and last...

Thanks for prepaying your first 3 months and last month. (Deposit is for damages first, then any remainder to unpaid rent.) If you would like to prepay half or all the rest of the year lease when...
Forum: kriesel 2020-11-19, 22:32
Replies: 4
Views: 1,862
Posted By kriesel
Mlucas builds

How I built Mlucas in WSL2 / Ubuntu 18.04 for multiple processor types
(rename the executable between builds to identify the flavor)
Note these are mostly untested.

basic x86-64 & presumably...
Forum: Hardware 2020-11-19, 21:48
Replies: 102
Views: 5,732
Posted By kriesel
Unplug, open case, check JF1...

Unplug, open case, check JF1 (https://www.mersenneforum.org/showpost.php?p=563263&postcount=62) by the main motherboard 24-pin power connector. I had the same won't-start issue after a Windows...
Forum: Lounge 2020-11-19, 16:28
Replies: 4,127
Views: 263,644
Posted By kriesel
Ah yes, that worked well when physical paper...

Ah yes, that worked well when physical paper checks were endorsed and stamped and returned to the writer after having served their purpose. Mailing a check, the effective payment date was often that...
Forum: FermatSearch 2020-11-19, 15:50
Replies: 57
Views: 2,585
Posted By kriesel
Sure, write me some error free code that runs in...

Sure, write me some error free code that runs in O(ln(n)) or faster and I'll try it.
The odds of n being prime ~1/ln(n), are very much against your assertion of primality for MMp51*.

Now could we...
Forum: Hardware 2020-11-19, 14:24
Replies: 102
Views: 5,732
Posted By kriesel
Some observations here: 1) Sometimes mine seems...

Some observations here:
1) Sometimes mine seems to get stuck during the BIOS initialization, requiring a power cycle to try again.
2) The sequence is interminable but the time window for F11, F12,...
Forum: FermatSearch 2020-11-17, 15:42
Replies: 57
Views: 2,585
Posted By kriesel
Or ~2; 1085 and 2285. 285 log102 =~85.794 There...

Or ~2; 1085 and 2285. 285 log102 =~85.794
There seems to be considerable uncertainty in the 1085 figure.
...
Forum: kriesel 2020-11-15, 19:38
Replies: 10
Views: 2,216
Posted By kriesel
Effect of number of workers continued 2

Additional processor types:
FMA3 capable 6-core i7-8750H (no code running on the IGP at the time)
Xeon Phi 7250 (68 cores in one socket) see also https://www.mersenneforum.org/showthread.php?t=25767
Forum: Homework Help 2020-11-15, 18:53
Replies: 5
Views: 366
Posted By kriesel
Six workers, six corresponding average times per...

Six workers, six corresponding average times per iteration at the stated fft length. The corresponding iterations/sec for each worker are 1000ms/sec / (average iteration time in ms). The total...
Forum: Hardware 2020-11-15, 16:41
Replies: 102
Views: 5,732
Posted By kriesel
Wasn't expecting this in a benchmark run; never...

Wasn't expecting this in a benchmark run; never seen it before. Occurrence of "INF".
First appearance at 18M and becomes more prominent as fft length increases. Some "15 second" benchmark timings...
Forum: Hardware 2020-11-15, 11:44
Replies: 102
Views: 5,732
Posted By kriesel
WSL2 install was a bust. The cpu lacks some...

WSL2 install was a bust. The cpu lacks some required virtualization support.

On Windows, I have gotten to where it will run prime95. Benchmarking with hyperthreading in prime95 does x2, x3, and...
Forum: Information & Answers 2020-11-15, 11:15
Replies: 10
Views: 475
Posted By kriesel
https://www.mersenneforum.org/showpost.php?p=55312...

https://www.mersenneforum.org/showpost.php?p=553120&postcount=26
Forum: Soap Box 2020-11-14, 17:59
Replies: 120
Views: 7,673
Posted By kriesel
For 1MW...

For 1MW (https://www.engr.wisc.edu/news/broader-reach-expanded-role-uw-madison-reactor-adds-value-industry/) in downtown Madison WI, see https://reactor.engr.wisc.edu/
I recall standing on top of it...
Forum: Hardware 2020-11-13, 01:35
Replies: 102
Views: 5,732
Posted By kriesel
Updating to Windows 10 Pro build 1909 paid off

Now sees 1 socket, 68 real cores, 272 logical cores, and all cache.
And prime95 v30.3b6 successfully launches and recommends 17 4-core workers.
Benchmarking is under way for 2M to 8M on selected...
Forum: Hardware 2020-11-12, 23:55
Replies: 102
Views: 5,732
Posted By kriesel
Yes, and first. Taking no chances. Windows...

Yes, and first. Taking no chances.

Windows 10 Pro recognized 28 cores and 112 logical processors, so at the expected 4:1 ratio. See the Taskmgr screen shot that shows those numbers along with an...
Forum: Hardware 2020-11-12, 03:25
Replies: 102
Views: 5,732
Posted By kriesel
CPUZ view of the Windows-flavor-subsetted...

CPUZ view of the Windows-flavor-subsetted hardware, and a benchmark on it.
Feature Detector output:CPU Vendor String: GenuineIntel

CPU Vendor:
AMD = No
Intel = Yes

OS...
Forum: Hardware 2020-11-12, 02:17
Replies: 102
Views: 5,732
Posted By kriesel
Sign of life

After a long unsatisfying day of trying to revive my network after a bad overnight storm
(it could be worse; the neighbor's new shed rolled nearly to their sun porch, uphill, and is looking very...
Forum: Hardware 2020-11-11, 22:15
Replies: 102
Views: 5,732
Posted By kriesel
It's a different style case, but the following...

It's a different style case, but the following has a lot of info on K1SPE MB and BIOS
https://www.supermicro.com/manuals/superserver/mid-tower/MNL-1891.pdf
(and yes it was well hidden)

downloads...
Forum: GPU Computing 2020-11-11, 19:36
Replies: 32
Views: 7,384
Posted By kriesel
https://www.mersenne.org/report_exponent/?exp_lo=2...

https://www.mersenne.org/report_exponent/?exp_lo=211584161&exp_hi=&full=1 shows it was already factored to 74 bits, days before the quoted post.
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