Posts by Eric Driver

1) Message boards : Number crunching : Something interesting (Message 3695)
Posted 4 days ago by Profile Eric Driver
Post:
When I am crunching this project I get 2 tasks per GPU.
I get .2 CPU and .49 GPU

This is the only project that does that.

I don't mind, I just found it interesting.

It sounds like you have an app_config.xml file that is setting that. The GTX1080 doesn't need 2 tasks at a time. If you raise the gpu_usage to .99 in the app_config.xml then it will only run 1 task.
2) Message boards : News : Batch Plan (Message 3693)
Posted 6 days ago by Profile Eric Driver
Post:

Just a minor tweak. Doing the first of 25 Cvecs for 13x12, before going to row 14. The first Cvec always gives a plethora of new fields and it will also help with timing info.

Out of curiosity do you have any idea what percentage 13×12 needs to get to before we go back to the plan row 14? at time of posting is currently at 2.6%

Completing the 1st Cvec would be 1/25 of the total, or 4%.
3) Message boards : News : Batch Plan (Message 3691)
Posted 8 days ago by Profile Eric Driver
Post:
The plan is to go up to 13x11 and then move on to row 14. Rows 14 and 15 are comparable to row 13, so we should be able to get up to row 16 (the final row) with only data sets 13x12, 14x12, and 15x12 unfinished.

Has the plan changed?


Just a minor tweak. Doing the first of 25 Cvecs for 13x12, before going to row 14. The first Cvec always gives a plethora of new fields and it will also help with timing info.
4) Message boards : Number crunching : One host only gets one task at a time for GPU, another gets 65 (Message 3687)
Posted 26 days ago by Profile Eric Driver
Post:
The single task host now has plenty.

But I don't understand the formula you quoted, I wasn't limited to 1 a day, I was limited to one at a time. Perhaps every good task returned increased it, so I was now due 2 a day, so one more?

It's hard to say exactly how it's implemented in the code, but that seemed like the closest thing to a "naughty list". Whatever the cause, at least it's working now.
5) Message boards : Number crunching : One host only gets one task at a time for GPU, another gets 65 (Message 3685)
Posted 26 days ago by Profile Eric Driver
Post:
Neither has an app config. Both haven't done this project in a long time, but they're not new to it. My first thought was the last time one of the hosts was running it, something happened to get it on the naughty list, limiting it to 1 task at a time. Climate prediction does this if you crash a task. Next task only issued after 1 day, or after you return a correct task. Does this project use naughty lists?


You're talking about the "daily_result_quota":
<daily_result_quota> N </daily_result_quota>
Each host has a field MRD in the interval [1 .. daily_result_quota]; it's initially daily_result_quota, and is adjusted as the host sends good or bad results. The maximum number of jobs sent to a given host in a 24-hour period is MRD*(NCPUS + GM*NGPUS). You can use this to limit the impact of faulty hosts. 
Yes, we use that parameter. If that's the issue, it will eventually resolve itself as more correct results are returned.

The only other thing I can think of is you are using different preferences for the 2 hosts, and the one has the "resource share" set too low.
6) Message boards : Number crunching : One host only gets one task at a time for GPU, another gets 65 (Message 3682)
Posted 27 Mar 2024 by Profile Eric Driver
Post:
Why does this host https://numberfields.asu.edu/NumberFields/show_host_detail.php?hostid=2800357 get one at a time, yet this host https://numberfields.asu.edu/NumberFields/show_host_detail.php?hostid=2800361 gets 65? No tasks from any other project were in the queues.

That's hard to say. Are you using an app_config.xml file for either of them? Is one of the hosts relatively new? I've noticed new hosts can sometimes grab more tasks when first connected and it takes a little time for the stats to settle down.
7) Message boards : News : BOINC is a finalist for an notable award, and needs your vote (*by Sunday) (Message 3680)
Posted 26 Mar 2024 by Profile Eric Driver
Post:
The World Summit on the Information Society (WSIS) is a United Nations-sponsored initiative aimed at harnessing the potential of information and communication technologies to build inclusive and equitable information societies worldwide. BOINC has been nominated for a prize at the 2024 forum, and has passed initial hurdles; the next and last step ("Phase 3") requires public votes. The award would be a very nice boost and validation for BOINC and all our projects; if we can get our communities to vote, we should have a decent shot at this point...

Voting is pretty simple, takes just a few minutes; instructions are here.

(*The deadline for votes is Sunday: 31 March 2024, 23:00 UTC+02:00)
8) Message boards : Number crunching : What does 0.91CPU mean? (Message 3674)
Posted 7 Mar 2024 by Profile Eric Driver
Post:
I looked at my schedules tasks and they all show 0.91CPU along with the GPU. What does 0.91CPU mean? I have eight cores available.

Thanks.


I'm assuming that's the value reported by the manager and it's for a GPU task? The .91CPU would be how much of a CPU it's using in addition to the GPU. The .91 seems kind of high. You can lower it by setting the cpu_usage in the app_config.xml file. I have mine set to .2. As it runs watch how much of the cpu it uses and use that to get a better value for your system.
9) Message boards : Number crunching : GPU lookup table (Message 3669)
Posted 29 Feb 2024 by Profile Eric Driver
Post:
Hi there, just an FYI I have Titan V (V100) GPU's on linux and windows (cuda and opencl)

>>Loading GPU lookup table from file.
>>GPU was not found in the lookup table. Using default values:

Not sure if this can optimise output in any way, but the default values seem to work.
cheers.


Good to hear. The default values were chosen conservatively to work for most cards.
10) Message boards : Number crunching : a badge issue (Message 3667)
Posted 24 Feb 2024 by Profile Eric Driver
Post:
Everything back to normal ... Thank You ... once more ... there is only one cross project id ... and a badge is as it supose to be, also points ...

so regards and all the best, Grzegorz Roman Granowski

I'm glad it's working now.
11) Message boards : Number crunching : a badge issue (Message 3663)
Posted 23 Feb 2024 by Profile Eric Driver
Post:
greetings ... I do not see my badge in my Team Forum signature ... whilst all other badges are visible ...

my TeamMate told me it is because the cross project id is different on my profule and boinc stats ... so if I can please ask why is that ...

and regards, GRG

https://www.boincstats.com/stats/search/?search=Grzegorz+Roman+Granowski

and there are all my projects ... numberfields stay aside ...and all other projects are visible ...

Although I could change this in the database, I don't believe that is a good idea. I did a quick search and it looks like the CPID is supposed to propagate across projects and get updated automatically. I don't know how this mechanism works, but I read something about reattaching to your older projects to correct the problem, and also possibly connecting with particular hosts. It may take time for changes to propagate through the system, so I suggest we wait a few days and see what happens.
12) Message boards : Number crunching : a badge issue (Message 3661)
Posted 23 Feb 2024 by Profile Eric Driver
Post:
as I can see on boinc stats I have different cpid than on my profle ... can I please ask for a help ? GRG


I assume you are talking about the cross-project ID. I'm not sure how those work. I checked my own and it is also different on my account page. So if there is a problem, we both have it.

I see your badge and it looks correct to me. What are you expecting to see?
13) Questions and Answers : Preferences : Error accesing preferences (Message 3658)
Posted 15 Feb 2024 by Profile Eric Driver
Post:
Hi!

Sorry if this is not the correct thread to post.

I am getting an error accesing my account, iy says:

Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, stdClass given in /home/boincadm/projects/NumberFields/html/inc/user.inc:84 Stack trace: #0 /home/boincadm/projects/NumberFields/html/user/home.php(30): get_other_projects() #1 {main} thrown in /home/boincadm/projects/NumberFields/html/inc/user.inc on line 84

BR

I looked at the code in question and made a small fix.

This doesn't happen to me, so I can't test the change. Please let me know if it now works for you.
14) Message boards : Number crunching : Does this project support multiple tasks on a single GPU? (Message 3651)
Posted 4 Feb 2024 by Profile Eric Driver
Post:
Also, see this:
https://numberfields.asu.edu/NumberFields/forum_thread.php?id=558&postid=3380#3380


Ok, thats cool.
But then it does not allow the other projects that use GPU to run.
And this project even with 2 x 2 GPU only uses 4 and 9% of the total capacity of the cards and that is including running 2 x GPU only FAH.

I was thinking I could make a way to run 2 or instances of this project simultaneously with other projects.


I have never tried running two different projects simultaneously on a GPU. You might need to run two separate instances of the manager to do that.

But something doesn't make sense. My 1660 is at 95% utilization with a single GPU process and my 1370Ti is at 99% utilization with 2 processes; so I think your 1080 should be fully utilized with only a single process. Are you sure you're not looking at the fan speed or the RAM utilization (those are much lower for me)? Otherwise, something else is wrong.
15) Message boards : Number crunching : Does this project support multiple tasks on a single GPU? (Message 3649)
Posted 4 Feb 2024 by Profile Eric Driver
Post:
Also, see this:
https://numberfields.asu.edu/NumberFields/forum_thread.php?id=558&postid=3380#3380
16) Message boards : Number crunching : Does this project support multiple tasks on a single GPU? (Message 3648)
Posted 4 Feb 2024 by Profile Eric Driver
Post:
Being my GPU is under utilized (12% or so on this project and others) I was wondering if I could run 2 tasks on a single GPU.

I have searched the web for information and I find something about app_config with gpu_usage 0.5 and cpu_usage 1, but that doesn't allow for a second task.

I checked something else from a LHC post and saw project_max_concurrent and I am familiar with just max_concurrent, but making the value 2 and restarting BOINC doesn't change anything.

So is this idea possible? Does the project allow it? If so what do I change?


I use app_config.xml but with cpu_usage = .2. Make sure you have an available cpu core otherwise it wont work. You might be able to get away with cpu_usage=0 and then you won't need to free up a core. If you want to set cpu_usage more precisely, watch it as it runs to see what percentage it uses.
17) Message boards : News : 2023 Year End Summary (Message 3646)
Posted 29 Jan 2024 by Profile Eric Driver
Post:
How big are the remnants of sf7? Is it only of sub-group 4 or more than sub-group 4? Since they aren't distributed in any sort of numerical order, it is hard to follow along to know how many work units are left to be distributed.


Sorry, I didn't see this earlier.

The number 4 after the 16x12 in the name is the congruence vector for the search. There are 25 CVs total, they will be issued in order, and it is just starting the 4th one. There are 3,125,000 WUs per CV.
18) Message boards : News : 2023 Year End Summary (Message 3645)
Posted 29 Jan 2024 by Profile Eric Driver
Post:
Meanwhile, the last remnants of subfield 7 have been farmed out to Gerasim.

Out of curiosity how often is the progress on the batch status page updated? It has been at 11.5% for quite some time, is this because not enough work has been processed to warrant updating percentage complete since it was last updated?


I update it every 2 to 3 weeks. Note that the ETA is based on NumberFields throughput, so it will take longer on Gerasim.
19) Message boards : Number crunching : application precision (Message 3640)
Posted 28 Jan 2024 by Profile Eric Driver
Post:
INT32 or INT64? :)


Arbitrary, sometimes called multi-precision. It uses the gmp library which allows variables to grow arbitrary large. For the GPU app I had to hard code a size so I used 15 64bit longs which gives 960 bits.
20) Message boards : Number crunching : application precision (Message 3638)
Posted 28 Jan 2024 by Profile Eric Driver
Post:
What is the calculation precision used by the project application?

I would say FP32, but not...

Thanks :)


It's integer, arbitrary precision.


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