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Search: Posts Made By: kriesel
Forum: GpuOwl 2021-09-28, 15:06
Replies: 64
Views: 12,718
Posted By kriesel
yes. libstd... missing is not the issue, libcxx...

yes. libstd... missing is not the issue, libcxx version is in that case.

I tried 3 different Linux for Colab versions and hit different issues in each, finally got Fan Ming's going, although it...
Forum: Marin's Mersenne-aries 2021-09-28, 13:22
Replies: 81
Views: 5,432
Posted By kriesel
3

Did anyone claim to be able to project the conclusion exactly? Given the quantizations of lowest exponent completed, number of exponents remaining, exponent ETAs, client reporting time interval,...
Forum: Marin's Mersenne-aries 2021-09-28, 03:32
Replies: 81
Views: 5,432
Posted By kriesel
5

Two more will complete soon. All are progressing.
Forum: GpuOwl 2021-09-27, 23:15
Replies: 64
Views: 12,718
Posted By kriesel
Tried that on a new colab account, got the...

Tried that on a new colab account, got the following as entire output of the run attempt:
./gpuowl.exe: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by...
Forum: Cloud Computing 2021-09-27, 22:23
Replies: 1,179
Views: 126,633
Posted By kriesel
I just added another, using my sole phone # to...

I just added another, using my sole phone # to receive the 6-digit confirmation code. (Maybe there are regional differences?)
Forum: Lounge 2021-09-27, 16:41
Replies: 1,479
Views: 150,806
Posted By kriesel
Not a waiting area. It's a corridor by an...

Not a waiting area. It's a corridor by an exterior wall probably with a good view of the parking lot. There's a newish facility laid out similarly near Madison WI. It's a fair hike from the main...
Forum: Cloud Computing 2021-09-27, 16:28
Replies: 1,179
Views: 126,633
Posted By kriesel
Why do you claim that? One person can have more...

Why do you claim that? One person can have more google email accounts than phone numbers.
Forum: Miscellaneous Math 2021-09-27, 16:01
Replies: 19
Views: 579
Posted By kriesel
What follows in that post is about as incoherent...

What follows in that post is about as incoherent a description of an algorithm as I've ever seen. And its purpose is pretty darn vague and overly general too. It's missing any mention of "Mersenne"....
Forum: Miscellaneous Math 2021-09-27, 14:48
Replies: 19
Views: 579
Posted By kriesel
What do you mean by "is divisible by"? M>=Mp? In...

What do you mean by "is divisible by"? M>=Mp? In large-exponent space, M<Mp is so rare, efficient code does not bother to test interim residues for that.

(Isn't p13 standard nomenclature for a...
Forum: Marin's Mersenne-aries 2021-09-27, 14:35
Replies: 575
Views: 105,722
Posted By kriesel
Took: Cat 1 DoubleCheck=59257963,74,1 ...

Took:

Cat 1
DoubleCheck=59257963,74,1
DoubleCheck=59334523,74,1

Cat 3
DoubleCheck=62114029,75,1
DoubleCheck=62515931,74,1
DoubleCheck=62765789,74,1
Forum: Marin's Mersenne-aries 2021-09-27, 13:16
Replies: 81
Views: 5,432
Posted By kriesel
6

Probably two more clear in the next day; all by ~2021-10-02. Average delta 25811.
Forum: chalsall 2021-09-26, 22:58
Replies: 17
Views: 441
Posted By kriesel
Maybe it's where culled ex-MS Windows OS...

Maybe it's where culled ex-MS Windows OS programmers go to attempt revenge. Or it's what they're doing in some free time, and habits carry over from the office.
Forum: Miscellaneous Math 2021-09-26, 22:17
Replies: 19
Views: 579
Posted By kriesel
Round these parts, people want to see code,...

Round these parts, people want to see code, number theoretic basis, efficiency, and accurate results.
193, a 4:1 discrepancy.

y=a x + c = 194; a=64, x=3, c=2
M=(194 + 64 * 3) / 2 = 193

or M =...
Forum: Marin's Mersenne-aries 2021-09-26, 20:56
Replies: 81
Views: 5,432
Posted By kriesel
7

57797893 completed.
Forum: chalsall 2021-09-26, 17:39
Replies: 17
Views: 441
Posted By kriesel
And presumably each additional Ubuntu based VM,...

And presumably each additional Ubuntu based VM, which may be kept around for testing in differing environments or whatever. How MS-ish of them.
Forum: Marin's Mersenne-aries 2021-09-26, 14:40
Replies: 81
Views: 5,432
Posted By kriesel
8

That changed quickly. Lingering cert cleared, and 2 LL DC. MP#48* loses the * projected ~2021-10-01 by alternate method.
Extrapolating a linear fit through the various projections from M56 history...
Forum: Cloud Computing 2021-09-26, 13:40
Replies: 1,179
Views: 126,633
Posted By kriesel
Number of accounts limit

Assuming 1 gmail email address per account and instance of Colab free, a recent online search indicated Google does not limit number of email addresses per person. So the practical limits on Colab...
Forum: kriesel 2021-09-26, 12:55
Replies: 23
Views: 8,253
Posted By kriesel
Why don't we preallocate PRP proof disk space in parallel with the computation?

(Some of this was originally posted as parts of https://mersenneforum.org/showpost.php?p=588497&postcount=441 andhttps://mersenneforum.org/showpost.php?p=588500&postcount=443)

In recent versions...
Forum: Marin's Mersenne-aries 2021-09-26, 11:11
Replies: 81
Views: 5,432
Posted By kriesel
11

10 DC and 1 lingering CERT remain; 57760673 completed.
Forum: Cloud Computing 2021-09-26, 10:38
Replies: 1,179
Views: 126,633
Posted By kriesel
Colab free, only attempting single instance per...

Colab free, only attempting single instance per account, if/when I get a GPU it's always a K80 for weeks now.
Forum: Miscellaneous Math 2021-09-25, 22:40
Replies: 19
Views: 579
Posted By kriesel
PRP is fast in large part because we only need to...

PRP is fast in large part because we only need to do it once per exponent. The VDF based proof generation allows verification of correct completion for additional effort that's a fraction of a...
Forum: GpuOwl 2021-09-25, 20:38
Replies: 5
Views: 141
Posted By kriesel
Good. One thing in favor of V7.x P-1 is...

Good.
One thing in favor of V7.x P-1 is superior error detection.
1) It saves powers of 3 produced during PRP/GEC, for use in generating the P-1 stage 1 power of 3. Generation of those individual...
Forum: Lounge 2021-09-25, 18:46
Replies: 22
Views: 608
Posted By kriesel
Thx. That firm's in Texas. Regs vary by state. I...

Thx. That firm's in Texas. Regs vary by state. I have a little array on my deck, but it's an isolated 12Vdc system. Does an ok job of providing a bit of direct DC lighting, spare battery charging, or...
Forum: Miscellaneous Math 2021-09-25, 18:32
Replies: 19
Views: 579
Posted By kriesel
(FTFY) PRP+proof ~1.01 test effort and high...

(FTFY)
PRP+proof ~1.01 test effort and high certainty of correctness.
LL & LL DC & ~4% LL TC ~2.04 test effort at wavefront. 2.04/1.01 >2. And PRP/GEC/proof gets more advantageous at higher...
Forum: GpuOwl 2021-09-25, 18:13
Replies: 5
Views: 141
Posted By kriesel
Right. In V7.x you'd have to give bounds with a...

Right. In V7.x you'd have to give bounds with a PRP worktodo line, then kill the run after P-1 stage 2 finishes. (Possibly you could use -iters if that worked. I vaguely recall trying that -iters...
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