Thank you for clearing this "issue" (the 4x size - 4x credit), my only machine has been running nonstop 24/7 to reach the 200M credit before the project ends,have already burned one MB and one PSU for this goal.

I have just one question, when the project ends there will be no WUs left to validate right?
I am counting on the Pending credits to reach the 200M and i wouldn´t want to fall short.

So I know the search is ending in about a month due to the goal being reached. But it not like that means it the end for finding amicable numbers there are several subset as part of Wiethaus's rules that haven't been searched at all that can results in finding hundreds of thousands of amicable pairs of type XN,2 and N,2. Like that what I did to find the like 170k pairs I found last year.

Says you found 2 pairs.

Good luck with that project! I am going to hang on here until the work stops, then look for something new to do. Will probably retire another cruncher or two.

Dave I had a rethink. I could come back and follow in your path. In your opinion is this the best for decision for the server? I still have over 7000 valid results waiting to be deleted, going back to 6 January

In early January, the server predicted that Part 4 would end in late February. Now the server is predicting that Part 4 will end in late March.

The predicted end date is changing rather rapidly. On February 9, the server predicted that Part 4 would end on March 18. Today (February 21), the server predicted that Part 4 will end on March 29.

I wonder what is happening. Is there more work than originally anticipated? Are crunchers leaving the project? Are crunchers getting less efficient?

1B is a nice stone!

Thank you yes it is.
I have now stop processing work, waiting for my 700 or so in pending to clear

Congratulations on the milestone!

Thank you much appreciated! I did it with roughly 35 tasks to spare :-) meaning I processed roughly 35 more tasks than needed

Yes, I noticed that you are likely to earn another 400,000 credits due to those tasks pending validation. So, have you moved on to another project or have you stopped crunching for now?

Moved to another project

1B is a nice stone!

Thank you yes it is.
I have now stop processing work, waiting for my 700 or so in pending to clear

Congratulations on the milestone!

Thank you much appreciated! I did it with roughly 35 tasks to spare :-) meaning I processed roughly 35 more tasks than needed

1B is a nice stone!

Thank you yes it is.
I have now stop processing work, waiting for my 700 or so in pending to clear

Nice to hear from you Dave. Yes it looks like I will hurt my goal in 9.27 days. I need about another 60,000,000 credits (I have taken into my pending into account"

I'm not sure Dave. I still believe there are periods of time when we run out of work one being around 18 hours ago.
I'm more interested to know how come the server still has a 4.49 hour backlog?

Grafana gives a nice overview of the situation. There are still periods without tasks, although they are much shorter than during the challenge.
https://grafana.kiska.pw/d/boinc/boinc?orgId=1&var-project=Amicable&from=now-7d&to=now

Yes I agree with you Grafana gives a wonderful view of the situation. I agree the outages are getting shorter
I have 731 pending 12,172 valid results. From a 4090 with a power cap of 320 W

Nice to hear from you Dave. Yes it looks like I will hurt my goal in 9.27 days. I need about another 60,000,000 credits (I have taken into my pending into account"

Over the course of 24 hours my credit has increased by a little over 9,215,000

Appreciate your update Dave.
Here is my update
in roughly 13 hours my credit increased by a total of 5,414,265

Here is the update:

My RAC: 22,164,774 (all crunchers crunching - RAC up a tiny bit)
Tasks ready to send: 10972 (down significantly)
Tasks in progress: 7850 (down ~4%)
Workunits waiting for validation: 79631 (up ~10%)
Transitioner backlog (hours): 5.48 (down about 20%)
Current progress: 53.2266%
ETA: 2026-03-14 (2 days later)
Runtime of last 100 tasks in hours: average, min, max: 7.03, 0.01, 138.29

Here are the current numbers. I have decided to track a few more numbers to try to get a better understanding of what is happening.

My RAC: 22,232,268 (all crunchers crunching - RAC up a tiny bit)
My tasks in progress: 72
My tasks validation pending: 3140 (~42.9 M credits - or just shy of two days of work for my crunchers)
Tasks ready to send: 45254 (big increase)
Tasks in progress: 8578 (up ~9%)
Workunits waiting for validation: 69693 (down ~15%)
Transitioner backlog (hours): 7.88 (up about 40%)
Current progress: 53.1383% (weird - lower than 12 hours ago? typo error by me?)
ETA: 2026-03-15 (another day later)
Runtime of last 100 tasks in hours: average, min, max: 7.00, 0.01, 137.53
360 users in the last 24 hours; 580 hosts in the last 24 hours

Here is the update:

My RAC: 22,164,774 (all crunchers crunching - RAC up a tiny bit)
Tasks ready to send: 10972 (down significantly)
Tasks in progress: 7850 (down ~4%)
Workunits waiting for validation: 79631 (up ~10%)
Transitioner backlog (hours): 5.48 (down about 20%)
Current progress: 53.2266%
ETA: 2026-03-14 (2 days later)
Runtime of last 100 tasks in hours: average, min, max: 7.03, 0.01, 138.29

You miss two variables,
Users in last 24 hours 386
Hosts in last 24 hours 632
These drop down significantly till first day of challenge begin. I remember 1200+ hosts at that day. Now almost half of it.

Dave, are you taking into consideration the transitioner backlog of 6.47 hours? I believe the challenge has progressed the project however because of the backlog of work needing to be validated et cetera, information we are seeing at https://sech.me/boinc/Amicable/server_status.php is delayed by however big the transitioner backlog is

A challenge started today, probably one of the reasons ....
https://www.boincstats.com/stats/challenge/team/chat/1132

Good point! I see that the ETA for the project has moved from March 6 to February 28 in the last two days or so.

Whoa. In less than 24 hours, the ETA has moved from February 28 to February 24!

Server was doing well yesterday. Had work all day, overall pendings were dropping and available work going up. Now all that is the opposite.

A challenge started today, probably one of the reasons ....
https://www.boincstats.com/stats/challenge/team/chat/1132

Good point! I see that the ETA for the project has moved from March 6 to February 28 in the last two days or so.

Hello, sorry if my question has already been asked elsewhere.
How is it that calculations remain stuck in "validation pending" status when two results have been returned for several hours?

Thank you

A challenge started today, probably one of the reasons ....
https://www.boincstats.com/stats/challenge/team/chat/1132

The server is struggling with the current load. I've increased the target "Tasks ready to send" from 5000 to 30000, so even if it drops below 30k, hopefully it will still stay above 0.

Technically it's possible to build the binaries for the arm64-apple-macos-11 compiler target. But first I need to figure out how to add arm64 macOS platform to the project because it didn't even exist when this project started.

Maybe you can ask on the BOINC forums because you are not the first dealing with this.

Thanks!

GPU requirements are the same as for Windows and Linux versions: AMD (HD 5xxx or newer) or NVIDIA (GTX 4xx or newer) GPU with OpenCL support and at least 2 GB of video memory.

The MacOS GPU version has been confirmed to work on OS X El Capitan and MacOS Sierra. Older MacOS versions have poor OpenCL support and may fail to run the GPU version.

Sergei, all of my crunchers are Intel Macs running AMD or NVIDIA GPUs. Thanks for your continued support of that platform. Not many projects are doing so anymore.

Tigers_Dave

GPU requirements are the same as for Windows and Linux versions: AMD (HD 5xxx or newer) or NVIDIA (GTX 4xx or newer) GPU with OpenCL support and at least 2 GB of video memory.

The MacOS GPU version has been confirmed to work on OS X El Capitan and MacOS Sierra. Older MacOS versions have poor OpenCL support and may fail to run the GPU version.

With 20/20 hindsight, it seems that 1B should be a giant Bronze Star (not the current gold), 5B = giant Silver, and 10B = giant gold star.

$0.02

The CPU application is outdated and doesn't fully leverage SIMD capabilities, whereas the algorithm is more GPU-friendly. For math-intensive and parallelizable workloads, GPUs deliver substantially better performance, as they are specifically designed for this type of computation.
I recommend allocating your CPUs to projects that either lack a GPU version or where the GPU version isn't as efficient as the CPU counterpart...

Ok, thanks for the response. Hoping for Apple Silicon support at some point in the future, cause the new M4 Macs are selling like crazy right now, with many people finally ditching Windows...

And the new M4 Ultra Mac Studio, and maybe even an M4 Extreme Mac Pro, are coming this year, with the Ultra, or both new chips, having much better scaling than the M2 Ultra, meaning a lot of extra compute power, along with the new Nvidia 50-series GPU's, so having Apple SIlicon support ready for the M4 Ultra would be so amazing :)

Mine seems to have stabilized within one week. It's at 50 rank currently, yesterday it was at 51, fist two days were massive and but it seems like it's holding now.

I was curious as well. This doesn't directly answer your question but it does describe part of the functionality. Quote below is from:

https://boinc.berkeley.edu/boinc_papers/credit/text.php

In BOINC, recent average credit (RAC) is computed as an exponentially weighted average with a half-life of one week. In other words, if an entity is not granted any credit for one week, its RAC will decline by 50%

Thank you, that answers my question.

I was just checking your profile and based on your half as much credits as my total, it seems your hardware found 2 amicable pairs, whereas the number of total credits being double that my hardware crunched though managed to find none as of the time of this post. How odd.

And here I thinking (coming up on 3 billion) I was "scooting" along....

Congratulations to you for 9 billion!!!!

And here I thinking (coming up on 3 billion) I was "scooting" along....

Congratulations to you for 9 billion!!!!