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Posts by Jim1348

1) Message boards : News : Award Badges Going Live Soon! (Message 70109)
Posted 19 days ago by Jim1348
Post:
They only show up when you post not on your account page anymore, yours are there.

I never knew I even had them. I guess I have to post to see. Thanks.
2) Message boards : Number crunching : nbody: Trying to run on 2 cores, but downloading 4 core tasks (Message 70093)
Posted 23 days ago by Jim1348
Post:
So I've decided to start running the Nbody tasks again. I have a 4 core CPU that has 2 GPUs. I want to limit Nbody to run on 2 cores maximum so my GPUs stay busy.

This works for me for the CPU. You can add the GPU part.
You will need a reboot (or restarting BOINC) for it to take effect for any work already downloaded.

<app_config>
  <app>
    <app_version>
    <app_name>milkyway_nbody</app_name>
    <plan_class>mt</plan_class>
    <avg_ncpus>2</avg_ncpus>
  </app_version>
</app_config>
3) Message boards : MilkyWay@home Science : 'Baby' Milky Way discovered 12 bln light years away (Message 70031)
Posted 14 Aug 2020 by Jim1348
Post:
A golden halo glinting 12 billion light years away is the farthest galaxy resembling our Milky Way yet spotted, astronomers said Wednesday, adding the "surprisingly unchaotic" infant star system challenges our understanding of the early years of the Universe.

"Despite forming stars at a high rate, and therefore being the site of highly energetic processes, SPT0418-47 is the most well-ordered galaxy disc ever observed in the early Universe," said Vegetti, who co-authored the research published Wednesday in Nature.

"This result is quite unexpected and has important implications for how we think galaxies evolve."

https://www.spacedaily.com/afp/200812150025.s4z3xdhi.html
4) Message boards : News : New Runs for MilkyWay@home Nbody Simulations (07/29/2020) (Message 70019)
Posted 6 Aug 2020 by Jim1348
Post:
Yes. I run only one core per work unit. They don't take much memory anyway (only 16 MB).
I don't see the point of running more cores. They just disrupt the other projects.

But I run mine 24/7, and they sometimes run for over a day. If you need to complete them faster, then of course more cores would help.
But I think you lose a little efficiency with more cores.

<app_config>
  <project_max_concurrent>16</project_max_concurrent>
  <app>
    <name>milkyway_nbody</name>
    <fraction_done_exact/>
    </app>
  <app_version>
    <app_name>milkyway_nbody</app_name>
    <plan_class>mt</plan_class>
    <avg_ncpus>1</avg_ncpus>
  </app_version>
</app_config>
5) Message boards : Number crunching : Why Validation Inconclusive? (Message 69883)
Posted 2 Jun 2020 by Jim1348
Post:
... "Being Peer Reviewed" could be better than "Validation Inconclusive" or "Validation Pending"?

That suggests review by the House of Lords, which is a bit over the top for this project.
"Pending" makes more sense, because it is in process but not completed. "Inconclusive" could imply that it will never be completed.
6) Message boards : Number crunching : Any enhanced applications developed for Milkyway to speed up GPU work? (Message 69480)
Posted 29 Jan 2020 by Jim1348
Post:
I've always avoided Linux as I see no point in learning a new OS that only makes sense to someone with a geeky mind. I don't have one of those minds.

Both of them are awful. The Linux people try to take the mistakes of Windows and exaggerate them. But Linux is a lot faster for some purposes.
7) Message boards : Number crunching : Any enhanced applications developed for Milkyway to speed up GPU work? (Message 69477)
Posted 29 Jan 2020 by Jim1348
Post:
Latest Ubuntu, 19.10 has the Nvidia 430 drivers in the install package. No questions asked, no hoops to jump through. The installer sees Nvidia hardware and installs the drivers for you, boom.Done.

What about AMD? I am putting together a new machine with an RX 570, and can do either Ubuntu 18.04.4 in a few days, or go with 19.10.
I figured I would stay with 18.04, since I think I have to install the drivers myself anyway, but is there any advantage to 19.10?
8) Message boards : News : Multi-threaded N-body is back (Message 69336)
Posted 11 Dec 2019 by Jim1348
Post:
Is there a fix for the 6CPU task problem?

They work for me.
https://milkyway.cs.rpi.edu/milkyway/results.php?hostid=737912&offset=0&show_names=0&state=4&appid=
Are you sure it is not your AV interfering?
9) Message boards : News : Multi-threaded N-body is back (Message 69334)
Posted 11 Dec 2019 by Jim1348
Post:
I am running W10,. If the multi thread tasks are the ones using 6 cpus I am having trouble. The tasks run very slowly, 3% after two days.

I am running 6 cores on Win7 64-bit. On an i7-4771 they are taking about 4 to 6 hours now (one is estimating 8 hours), but completing OK at this point.
10) Message boards : Number crunching : Rx570 vs. gtx 1080, 1080ti, 2080 (Message 69092)
Posted 20 Sep 2019 by Jim1348
Post:
I have just stayed away from ATI/AMD because of the challenge of installing the drivers and maintaining them. The Nvidia drivers just install and run with no issues ever. The ATI/AMD drivers are a complete fiasco as all the constant posts of issues posted attest in the forums.

True enough for the latest versions. But the RX 500 series is easy enough as I understand it, though mine is on Windows. And the power efficiency of AMD is much better here; I use about 90 watts (GPU-Z) on my RX 570 for my 100 seconds; I expect it would be more like 140 watts on the Nvidia cards.

I have a bunch of Nvidias, but they are used elsewhere (on Ubuntu).
11) Message boards : Number crunching : Rx570 vs. gtx 1080, 1080ti, 2080 (Message 69077)
Posted 19 Sep 2019 by Jim1348
Post:
And Windows does better than Linux (or Darwin), which is a bit unusual.

I disagree. Here is a task both run on a 1080 Ti. Mine on Linux and my wingman on Windows.
https://milkyway.cs.rpi.edu/milkyway/workunit.php?wuid=1803261603
My card did the task 10 seconds faster.

Are you running two cards? It looks like you have a RTX 2080.
But I have looked mainly at the N-body (many of them), and that was my conclusion there. Perhaps it does not hold true for the GPUs, and the difference in OS may not be so important.
12) Message boards : Number crunching : Rx570 vs. gtx 1080, 1080ti, 2080 (Message 69067)
Posted 19 Sep 2019 by Jim1348
Post:
I concur with all of that. Use the Nvidia cards elsewhere. And Windows does better than Linux (or Darwin), which is a bit unusual.

I am very happy with my RX 570 on Win7 64-bit, averaging around 100 seconds per work unit. That is a bit surprising, since it does not have great dual-precision specs.
https://milkyway.cs.rpi.edu/milkyway/results.php?hostid=803662

PS - You can get faster cards, but it won't do much good, since they usually have problems getting enough work for some reason. I am not sure whether that is fixed or not.
13) Message boards : News : Multi-threaded N-body is back (Message 69054)
Posted 18 Sep 2019 by Jim1348
Post:
I request that you do one or the other, but not both, for the reasons previously discussed concerning the BOINC scheduler.
(I don't see any way to choose anything yet.)
14) Message boards : Number crunching : multithread (Message 68943)
Posted 1 Aug 2019 by Jim1348
Post:
I believe they are all single-threaded now. There is no option for multi-threaded.
15) Message boards : Number crunching : Long crunch time on new N-Body simulations? (Message 68736)
Posted 16 May 2019 by Jim1348
Post:
Yes, I saw it. I think it is normal.
16) Message boards : News : New runs of MilkyWay Nbody out (Message 68629)
Posted 30 Apr 2019 by Jim1348
Post:
No, "Milkyway@home Separation" has CPU apps as well, see applications page.

You are right. I just attached a new BOINC instance, selected CPU only, and got both N-Body and Separation. It appears that something got lost in the transition.

On the other hand, what happens when you select both CPU and GPU? (That is, do you get only the GPU Separations then?)
I will try that later.
17) Message boards : News : New runs of MilkyWay Nbody out (Message 68621)
Posted 30 Apr 2019 by Jim1348
Post:
How does a person opt OUT of the N-body work?

Just de-select "Use CPU". It is the only CPU project they have now.
18) Message boards : News : 30 Workunit Limit Per Request - Fix Implemented (Message 68478)
Posted 5 Apr 2019 by Jim1348
Post:
Then, at 5 PM I ran out and got nothing. But a manual request caused another 71 to download.
If they run out again, it is back to Folding. I can't stay up all night to get them.

After the last work unit finishes and it gets zero on the next request, BOINC waits 10 minutes and tries again.
Then, it gets a full load (85 on the last request). It is a strange problem, but not a major one for me.
19) Message boards : News : 30 Workunit Limit Per Request - Fix Implemented (Message 68475)
Posted 4 Apr 2019 by Jim1348
Post:
I don't know if this is the right thread or not, but since no one seems to know what the problem is, I will try it.
I attached my RX 570 (Win7 64-bit) at 10 AM and got 74 work units. The take 1 minute 49 seconds to run.
Then after a couple of hours I got another 72, and then a few hours therafter 71 work units.

Then, at 5 PM I ran out and got nothing. But a manual request caused another 71 to download.
If they run out again, it is back to Folding. I can't stay up all night to get them.
20) Message boards : News : New Server Installation (Message 68250)
Posted 13 Mar 2019 by Jim1348
Post:
Todays database unavailable was just about the last straw for me.

I wonder if it is because the server is overloaded, or just unreliable?

Also, I wonder how much computing support they really need at MW. With all of the high-end cards that people are starting to throw at it (and all the CPU cores available), I wonder if we are really needed, even with the new server. If they could give us a progress report of some sort, that would help.


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