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1) Message boards : Aggie The Pew message board (Message 123630)
Posted 57 minutes ago by Profile Michael GoetzProject donor
A CALL TO ARMS

I'm not sure how many of you have noticed, but the top two people on the challenge leaderboard are up there primarily because they're using Amazon AWS p3 servers with the insane Tesla V100-XSM2-16GB GPUs. These are server-only, special form-factor GPUs that are a lot faster than the PCIE version of the GPU. According to our fastest GPUs page, an RTX 2080 Ti is only about 62% as fast as these beasts.

GFN-21 takes about 3 hours and 20 minutes.

At the best possible pricing these servers cost less than $1 per hour to rent.

As it turns out, neither of these two are members of a team that's competing for the top team position, but it's possible, even likely, that other teams have noticed this. I know for a fact that SETI.Germany has spotted it. It's therefore possible that some people and some teams can greatly increase their performance for the second part of the challenge simply by throwing a few bucks at Amazon.

So don't get complacent because we're in the lead. As of right now, we're up by about a million points. That's only 7 tasks -- which $25 and 200 minutes at AWS can erase.

We have a chance to win this, but we really need every task we can get. If you've got anything that can complete a GFN21 before the challenge ends, now's the time to crank it up.
2) Message boards : Number crunching : Winter Solstice Challenge (Message 123628)
Posted 4 hours ago by Profile Michael GoetzProject donor
Robish wrote:

That is very cool. What year did 21 start Mike? Are we looking at a year worth of (normal) work in 10 days? We wouldn't be long finding one if this pace were kept up.


September 15th, 2015, as per GFN Status by n-Range (17-22).


So optimistic about setting a World Record, we started 22 early, and not until 3.5 years(!) later did we start 21. /JeppeSN


Not so much optimistic as it was that the world record attempt was the whole point of bringing GFN to BOINC. That's why we did it. GFN-20 also started after GFN-22.
3) Message boards : Number crunching : Winter Solstice Challenge (Message 123622)
Posted 5 hours ago by Profile Michael GoetzProject donor
Robish wrote:
After 2 days:
Since the challenge started, the leading edge has advanced 6.60% as much as it had prior to the challenge!


So if we keep this up we're looking at over 33% advance in the 10 days. That IS truely awesome!


Somewhere between 10% and 20% is probably more realistic. The huge surge of tasks sent out at the beginning of the challenge skews the statistics somewhat, so we won't see quite as much growth for the remaining days as we did in the first 2.

That's still incredible progress, however.


Right now it looks like we're on a course for about 20%, or maybe a bit more. Wow.


That is very cool. What year did 21 start Mike? Are we looking at a year worth of (normal) work in 10 days? We wouldn't be long finding one if this pace were kept up.


September 15th, 2015, as per GFN Status by n-Range (17-22).

It would be really nice to find a GFN-21 during the challenge. Given your luck, especially with GFNs, I fully expect you to be the one who finds it. No pressure. :)
4) Message boards : Number crunching : Winter Solstice Challenge (Message 123620)
Posted 5 hours ago by Profile Michael GoetzProject donor
After 2 days:
Since the challenge started, the leading edge has advanced 6.60% as much as it had prior to the challenge!


So if we keep this up we're looking at over 33% advance in the 10 days. That IS truely awesome!


Somewhere between 10% and 20% is probably more realistic. The huge surge of tasks sent out at the beginning of the challenge skews the statistics somewhat, so we won't see quite as much growth for the remaining days as we did in the first 2.

That's still incredible progress, however.


Right now it looks like we're on a course for about 20%, or maybe a bit more. Wow.
5) Message boards : Number crunching : Credit Milestones (Message 123618)
Posted 7 hours ago by Profile Michael GoetzProject donor
Nearly overlooked it but last Monday I passed 3,000,000,000. Three thousand million or 3 billion depending on where you live.


Congratulations!



6) Message boards : Generalized Fermat Prime Search : GFN Prime Discoveries (Message 123616)
Posted 8 hours ago by Profile Michael GoetzProject donor
We've found another n=16 (65536) prime!

On 16 Dec 2018 3:33:30, the 501,899 digit prime 45536968^65536+1 was found by CGB using the OCL2 (combined) app.

The double checker of this task was k4m1k4z3 on 16 Dec 2018 4:04:07 using the OCL2 (combined) app.

Congratulations!
7) Message boards : Aggie The Pew message board (Message 123615)
Posted 8 hours ago by Profile Michael GoetzProject donor
After Day 4:
21 AtP members are crunching


Is this from the extended version of "The 12 Days of Christmas?"

"21 members crunching, 20 fans a-churning, 19 keyboard tapping, 18 GPUs smoking..."



"... and an Amdahl in a B-Tree."
8) Message boards : Number crunching : Winter Solstice Challenge (Message 123598)
Posted 21 hours ago by Profile Michael GoetzProject donor
After four days:


Challenge: Winter Solstice
App: 16 (GFN-21)
(As of 2018-12-15 22:27:13 UTC)

22192 tasks have been sent out. [CPU/GPU/anonymous_platform: 6103 (28%) / 16089 (72%) / 0 (0%)]

Of those tasks that have been sent out:

10396 (47%) came back with some kind of an error. [2360 (11%) / 8036 (36%) / 0 (0%)]
5663 (26%) have returned a successful result. [862 (4%) / 4801 (22%) / 0 (0%)]
6133 (28%) are still in progress. [2881 (13%) / 3252 (15%) / 0 (0%)]

Of the tasks that have been returned successfully:

2629 (46%) are pending validation. [455 (8%) / 2174 (38%) / 0 (0%)]
3019 (53%) have been successfully validated. [407 (7%) / 2612 (46%) / 0 (0%)]
5 (0%) were invalid. [0 (0%) / 5 (0%) / 0 (0%)]
10 (0%) are inconclusive. [0 (0%) / 10 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is b=338176. The leading edge was at b=308008 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 9.79% as much as it had prior to the challenge!
9) Message boards : Aggie The Pew message board (Message 123595)
Posted 1 day ago by Profile Michael GoetzProject donor
You can see where I re-started the task several times with different core counts, and very different estimated compute times that are confusing.


I have observed that the time estimate from the CPU version of Genefer, at least when multi-threading, seems to have "issues". I wouldn't put much faith in that estimate. It's something we need to look into.

The GPU version of Genefer produces rock-solid estimates, however.

10) Message boards : Number crunching : Winter Solstice Challenge (Message 123592)
Posted 1 day ago by Profile Michael GoetzProject donor
Thanks Honza, and xii5ku (who replied via other means), for the https://whereismy.coffee/primegrid/ link. Hmmm, where IS my coffee? Ah, there it is, still warm too!

After day 3 of 10:

..........

Of those tasks that have been sent out:

8497 (46%) came back with some kind of an error.......


Is it safe to assume these errors were nearly instant, within seconds or minutes, or have thousands of hours of compute time been lost?


http://www.primegrid.com/forum_thread.php?id=8326&nowrap=true#123494


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