Just wondering, this word "recent" can mean days, weeks or months. I haven't found anything by using the word "recent" in search query. So I guess I'm the first to ask.

Sure, one way for a n00b like me to find out is to continue crunching until the average stops growing, there will be my answer. I figured I'd stop by and ask.

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.

On the server page is the number of Users with Recent Credit.

The same question was asked on PrimeGrid recently, "What is a User with Recent Credit"? The answer was anyone with an Average Work Done that is greater than or equal to 1 on the project. If you run a number of Amicable Numbers tasks in a short period of time, then stop, it's going to take quite a while for the Average Work Done to be less than 1.

I do not know if each project can specify what Average Work Done level qualifies as a User with Recent Credit OR if it's specified by BOINC.

It's possible to do one work unit and get one pair but it's very low probability. It will all even out with numerous tasks. In statistical terms, it's call the law of large numbers.

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.

Hi Steven:

I know this doesn't answer your question, but it might interest you that the rate of Amicable pair discovery has diminished significantly over time. For example, grcpool.com-3 has total credit of approximately 11 billion and has discovered ~487,000 Amicable pairs. I have total credit of almost 10 billion, but have discovered only ~36,000 Amicable pairs. I started Amicable crunching in late 2022, but grcpool.com-3 has been crunching since mid-2017.

Dave

---

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%

Hi Keith:

It typically takes ~3 weeks for my RAC to reach a steady state. Unfortunately, because of hardware instability, network outages, and power outages, I typically do not experience a 3-week stretch of steady-state crunching. So, practically speaking, my RAC rarely reaches a steady state. For example, my RAC is currently experiencing an upward trend following network and power outages during the recent holiday season.

BOINC manager for MacOS provides a graphical representation of each project's RAC (on that particular machine and for the user) for the past 30 days.

Best wishes,

Dave

---

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.

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.

Your computer is continuing to climb the ranks. It is now just outside of the top 20. Rank is an interesting statistic to follow, but it is dependent on how others' computers are doing.

I don't know whether this computer is crunching other GPU projects. However, based on 20 recent Amicable task results, this machine has a maximum theoretical RAC of ~6 million Amicable credits/day. That's quite the cruncher.

---

I meant on top participants "recent average credit rank", since that's what this thread is about. I'm currently ranked as 39 on this page https://sech.me/boinc/Amicable/top_users.php?sort_by=expavg_credit&offset=20

I've kept my work computer idle now since I've been affected by flu going around and haven't been using it much so my score went up by 11 since I posted last mentioning 50.

The page you are referring with rank 20 is on top host and my work pc happens to be the last one ranked on this page https://sech.me/boinc/Amicable/top_hosts.php?sort_by=expavg_credit&offset=0

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.

Hi Steven:

I know this doesn't answer your question, but it might interest you that the rate of Amicable pair discovery has diminished significantly over time. For example, grcpool.com-3 has total credit of approximately 11 billion and has discovered ~487,000 Amicable pairs. I have total credit of almost 10 billion, but have discovered only ~36,000 Amicable pairs. I started Amicable crunching in late 2022, but grcpool.com-3 has been crunching since mid-2017.

Dave

That would make sense if the user who I was comparing with registered before me.