Very good. I did sudo swapoff -a, and now swap shows as zero. We will see how it goes.

Remember when you reboot, you will have to use the command again unless you write a script and set it up to auto run at boot.

I have a GPU task and a CPU task running on my two cores Opteron 1210, 8 GB DDR2 RAM, GTX 750 Ti at 1202 MHz clock, 61 C. OS is SuSE Leap 42.3.Swap space is used at 37% of 2 GB. My HP Linux laptop, also running SuSE Leap 15.0 has a 7 GB swap space, not used.

How is your user latency (I define as delay between user requests and computer response)? One of my FX computers has been running QC jobs about 20 hours since a fresh reboot and already swap usage is at 4% (333 of 8047 MiB) and I am only using 3 threads of 8 available. I open boincmgr and it is taking up to 10 seconds to communicate to localhost. I am really suspecting this newer QC app is leaving some small percentage of dirty ram pages behind after completing the calc's and they add up over time to swap usage and user latency.

I am using this computer to read my mail, to navigate the WWW, read the newspapers including the NYTimes which leaves me ten free articles/month and I feel no delay. I have a 30 Mbit/s mixed fiber/copper connection by Telecom Italy, which means the the fiber reaches a cabinet that is not far from my home, then I have a copper connection. My router is also connected by WiFi to a Windows 10 PC, a printer and a decoder which gives me SKY TV on the TV set which is also the monitor of the Windows PC. I just had a Microsoft update on the Windows 10 PC and it restarted with its two Einstein@home tasks.
Tullio
I have also a smartphone running Android 7.1.1 on its 8 cores 64ARM CPU, connected by WiFi to the router. It is running SETI@HOMe and Einstein@home CPU tsks.

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Concerning returning the memory when the WU is over: that's sure. The OS enforces that.

Concerning swapoff : I don't recommend that. A small amount of swap use is normal. If you remove this "safety valve", the only thing that will happen is that processes will just fail (often in confusing ways).

My suggestion is that you pay attention to your system's performance during heavy boinc use. If it becomes sluggish/irritating/unusable, swap use is probably going up -- you'll have to run fewer tasks simultaneously. Removing the swap will make the system kill them.

This said, QC tasks come in various sizes, so you may hit an "unfortunate" combination of large ones.

T[/quote]

Doesn't happen alot but i still am getting these occasionally that cause errors.

</stderr_txt>
<message>
finish file present too long
</message>
]]>

General question to windows users: do you see "black windows" like a command prompt coming up when running QC apps?

Doesn't happen alot but i still am getting these occasionally that cause errors.

</stderr_txt>
<message>
finish file present too long
</message>
]]>

Those are my bane too. Nothing can be done about them. Normal feedback is to don't quit BOINC just as a task is finishing up. But it happens even when you never quit BOINC. It can happen for whatever reason that one task finishes up just as another project's task starts and BOINC takes too long to report the task. So the error.

Toni asked:

General question to windows users: do you see "black windows" like a command prompt coming up when running QC apps?

Just started my first QC app on windows. About 1 minute after the task started, a "black window" flashed up on the display then immediately disappeared.


About 15 minutes after the task started, there is a "python" app listed in windows task manager that I assume is the QC app. It is using all available threads on a 16 thread system. In BOINC Manager, the task shows that it should be using "4 CPU's".


Let me know if you need more info.

Toni asked:

General question to windows users: do you see "black windows" like a command prompt coming up when running QC apps?

Just started my first QC app on windows. About 1 minute after the task started, a "black window" flashed up on the display then immediately disappeared.


About 15 minutes after the task started, there is a "python" app listed in windows task manager that I assume is the QC app. It is using all available threads on a 16 thread system. In BOINC Manager, the task shows that it should be using "4 CPU's".


Let me know if you need more info.

Ok thanks. If the flashing is not annoying, I'd leave it as it is.

Regarding threads - the python app is indeed QC. Are you running multiple WUs simultaneously, or just one WU occupied all 16 threads?

Thanks a lot

Toni asked:

Regarding threads - the python app is indeed QC. Are you running multiple WUs simultaneously, or just one WU occupied all 16 threads?

I was running 1 task that took all threads. I will try to get another task and run it when one becomes available.

Just had 8 tasks error out with the following error code.

SafetyError: The package for hdf5 located at /var/lib/boinc-client/projects/www.gpugrid.net/miniconda/pkgs/hdf5-1.10.2-hba1933b_1
appears to be corrupted. The path 'lib/libhdf5.so.101.1.0'
has a sha256 mismatch.
reported sha256: d8628337423317dafe2d7f1f5029bfbb5cd22428fbf97e81678cc0db0e93c2c2
actual sha256: 6ef2e91ed97113943149adc62ad53c6d831db045c015176b13d3f7fd8f9e1c0f

I tried a reset on the project but that computer is now locked out for the rest of the day. Anything else I need to do?

Looks like we have made headway on these work units. Just over a thousand left. Will be interesting to see if they bring back the other set.

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Will be interesting to see if they bring back the other set.

I could use some longer ones, as long as the disc space problem is solved.
(I have 170 GB free, so it should not be a problem, though that remains to be seen.)

Sorry for running out. Give me some time. I'm at a conference so it's not super easy to spawn new work units right now but I'll give it a try.

Actually I think I will let them run out to not resubmit the same workunits again. I will send new ones out tomorrow or the day after.

No worries, it was more of a comment than a compliant. Enjoy your conference, we aren't going anyplace hahaha...

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Are you give us any comment about results of this batch? Was it usefull?

@kain The easy answer is "yes". This is a machine learning project so the more data you throw at it the better the predictor becomes. If you want to know if we solved the problem we set out to solve then the answer is "not totally yet" although we will publish something on it very soon.

I'm going to let the workunits run out again to make sure I don't recalculate them. In a few days I'll send out new ones.

Ok, Thanks Stefan. Happy New Years

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I everything goes smooth I ought to have the last workunits out by tomorrow, or latest the day after.