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Forum: GPU Computing 2020-07-13, 00:17
Replies: 289
Views: 16,835
Posted By ewmayer
Mod note: I split off the...

Mod note: I split off the Antarctic-station-green-energy subdiscussion into its own thread (https://mersenneforum.org/showthread.php?goto=newpost&t=25733) in Science & Technology.
Forum: Marin's Mersenne-aries 2020-07-13, 00:14
Replies: 10
Views: 21,225
Posted By ewmayer
BTW, just did a final-status check on the...

BTW, just did a final-status check on the "suspect LL results from my flaky Haswell system (since put out to pasture doing just system-tasks for gpuOwl runs on the R7 GPU I installed in the box...
Forum: Science & Technology 2020-07-12, 23:59
Replies: 12
Views: 44
Posted By ewmayer
2x is within my back-of-envelope-figuring...

2x is within my back-of-envelope-figuring tolerance - was aiming for a gross "is this remotely feasible?" Plus I stated "assuming similar conversion efficiencies for diesel-generator-to-kWh and...
Forum: PrimeNet 2020-07-12, 23:43
Replies: 1,875
Views: 132,188
Posted By ewmayer
Assuming most users to whom these were assigned...

Assuming most users to whom these were assigned go ahead complete the TF, will the server accept the results?
Forum: Mlucas 2020-07-12, 22:49
Replies: 53
Views: 5,692
Posted By ewmayer
SWAG - but if the new Apple CPUs are just running...

SWAG - but if the new Apple CPUs are just running the vanilla Arm 128-bit ASIMD behind all that hoopla, hey, less work for me.

I just hope they're not gonna walled-garden it by requiring code...
Forum: Science & Technology 2020-07-12, 22:13
Replies: 12
Views: 44
Posted By ewmayer
Similar thought occurred to me. Assuming for the...

Similar thought occurred to me. Assuming for the moment that the obvious environmental concerns could be mitigated, let's consider how big an old-fashioned-but-cheap-and-scalable lead-acid battery...
Forum: Mlucas 2020-07-12, 01:03
Replies: 53
Views: 5,692
Posted By ewmayer
I am keen to start porting my ARM assembly-code...

I am keen to start porting my ARM assembly-code routines via the ARM SVE framework to the new Apple/ARM CPUs, but for the life of me cannot find basic info like an Instruction Set Reference and...
Forum: Science & Technology 2020-07-11, 01:07
Replies: 2,758
Views: 152,549
Posted By ewmayer
@Paul: "...the feasibility study by Bose et al....

@Paul: "...the feasibility study by Bose et al. suggests that current technology could allow to probe differences of such proper-time intervals of the order of 10−38 seconds, about twenty orders of...
Forum: Mlucas 2020-07-11, 00:31
Replies: 53
Views: 5,692
Posted By ewmayer
Yep, that's it - I had Mike/Xyzzy (who owns the...

Yep, that's it - I had Mike/Xyzzy (who owns the account and thus has file-move-and-delete ability, whereas I can only upload) delete the 4 copies that ended up one-dir-too-high (at same time I...
Forum: Science & Technology 2020-07-10, 20:49
Replies: 12
Views: 44
Posted By ewmayer
At least for the part of the year that the sun is...

At least for the part of the year that the sun is visible, it would seem an ideal location for a solar-power array, suitably cold-temperature and high-wind hardened, naturally. Since Antarctica is a...
Forum: Soap Box 2020-07-10, 20:00
Replies: 1,195
Views: 45,697
Posted By ewmayer
Uh, except that whopper-telling is just about the...

Uh, except that whopper-telling is just about the the most popular sport in DC and its propaganda-transmitting MSM these days. To take a recent example, "Russia offered bounties to Taliban fighters...
Forum: GPU Computing 2020-07-10, 19:25
Replies: 289
Views: 16,835
Posted By ewmayer
CA, despite its green-energy-pioneer...

CA, despite its green-energy-pioneer chest-thumping, has some of the priciest power in the US - in fact one would be tempted to say "green costs more, that's why it's pricy", except that the...
Forum: GPU Computing 2020-07-10, 19:03
Replies: 289
Views: 16,835
Posted By ewmayer
Yesterday scored a pair of like-new R7s from an...

Yesterday scored a pair of like-new R7s from an ebay seller, $1450 incl ship, but CA sales-gouge adds 8.5%, or $123. One will go into my Haswell system thus completing my build-out (no more room or...
Forum: Lounge 2020-07-09, 22:50
Replies: 736
Views: 50,618
Posted By ewmayer
Some historical funny of the lèse-majesté "and a...

Some historical funny of the lèse-majesté "and a cat may look at a king" variety:

Reply of the Zaporozhian Cossacks to Sultan Mehmed IV of the Ottoman Empire...
Forum: Lounge 2020-07-09, 22:25
Replies: 951
Views: 36,648
Posted By ewmayer
Interesting news...

Interesting news (https://www.nakedcapitalism.com/2020/07/links-7-8-2020.html#comment-3387069) out of a multi-hospital study in Detroit:

Especially important because it seems clear that the...
Forum: Mlucas 2020-07-09, 21:34
Replies: 53
Views: 5,692
Posted By ewmayer
I thought it was, based on the fact that it...

I thought it was, based on the fact that it echoes the precise file size transferred, e.g. "1210672 bytes sent." Never had any issues with local-path stuff like this before that I can recall, but...
Forum: Mlucas 2020-07-09, 20:14
Replies: 53
Views: 5,692
Posted By ewmayer
The signature of the bug is an outright crash -...

The signature of the bug is an outright crash - no data corruption is involved, I can be sure of this since I hit it during a PRP run, and after fixing the bug and resuming the run, the ensuing...
Forum: Mlucas 2020-07-09, 05:29
Replies: 53
Views: 5,692
Posted By ewmayer
The patch-related notes on the readme detail all...

The patch-related notes on the readme detail all this - your example is FFT length 9*2^k, not the 3*2^k possibly affected by the bug. The bug is actually quite easy to look for based on certain key...
Forum: Mlucas 2020-07-08, 23:36
Replies: 53
Views: 5,692
Posted By ewmayer
Couple significant announcements, of the...

Couple significant announcements, of the I-have-good-news-and-bad-news variety.

o First, the bad: I have found and fixed a pair of critical bugs affecting FFT lengths of form 3*2k. This means...
Forum: Lounge 2020-07-08, 20:21
Replies: 736
Views: 50,618
Posted By ewmayer
Geez, especially in times such as the present...

Geez, especially in times such as the present when we can all use more funny in our lives, seeing this thread's last entry was from Feb 2019 is, well, depressing. In order to remedy that, I intend to...
Forum: Lounge 2020-07-08, 19:43
Replies: 26
Views: 2,586
Posted By ewmayer
Cute, but ICE can simply tighten the new regs. to...

Cute, but ICE can simply tighten the new regs. to e.g. "the majority of classroom tuition time must be in person".

At least in warm-weather states, open-air or under-large-canopy outdoor...
Forum: Tales From the Crypt(o) 2020-07-08, 01:23
Replies: 245
Views: 25,189
Posted By ewmayer
FBI Expands Ability to Collect Cellphone Location...

FBI Expands Ability to Collect Cellphone Location Data, Monitor Social Media, Recent Contracts Show (https://theintercept.com/2020/06/24/fbi-surveillance-social-media-cellphone-dataminr-venntel/) |...
Forum: Lounge 2020-07-08, 00:33
Replies: 1,420
RIP
Views: 88,832
Posted By ewmayer
The less-diplomatic phrasing I recall someone...

The less-diplomatic phrasing I recall someone using is "...one of the biggest assholes in the history of science." ISTR some especially ugly stuff involving Newton's systematic and deliberate...
Forum: Lounge 2020-07-07, 19:10
Replies: 1,420
RIP
Views: 88,832
Posted By ewmayer
Most people with ugly views and personalities of...

Most people with ugly views and personalities of one kind or another never create anything positive during their time on earth. The ones who do leave us with something worthwhile, which brings people...
Forum: Lounge 2020-07-06, 21:18
Replies: 951
Views: 36,648
Posted By ewmayer
Back at beginning of March in this thread there...

Back at beginning of March in this thread there was discussion of the WHO's conflicts of interest, especially w.r.to China. Latest on that front:

The WHO changed its coronavirus timeline to say it...
Showing results 1 to 25 of 1000

 
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