after long time, I intended to resume GPUGRID crunching, and so I tried to download GPU tasks on my machine with GTX980ti inside.
However, the BOINC event log shows the following:

04.10.2021 07:14:02 | GPUGRID | Requesting new tasks for CPU and NVIDIA GPU
04.10.2021 07:14:04 | GPUGRID | Scheduler request failed: Peer certificate cannot be authenticated with given CA certificates
04.10.2021 07:14:05 | | Project communication failed: attempting access to reference site
04.10.2021 07:14:06 | | Internet access OK - project servers may be temporarily down.

I don't think that the server is down, as on the server status page I can see that the number of tasks available dropping continually.

So, what's the problem with the "Peer certificate" ?

Edit: just tried it with another PC - same problem :-(
FYI: both systems are Windows 10

What I also found out now:

On a new PC with two RTX3070 inside (OS: Windows 10) I tried to add the GPUGRID project; it did not work. BOINC gave me the message "adding of project failed".

However,I don't think that servers are down at GPUGRID. On the server status page, I can observe a permanently chaning figure for "unsent" tasks, and I am able to access everything on the GPUGRID website.

So what's the reason for which I cannot 1) download any tasks, and 2) not add GPUGRID as a project on a new PC ?

Please use the fix for the peer certificate problem with Windows BOINC hosts at the BOINC forums.
https://boinc.berkeley.edu/forum_forum.php?id=10
https://boinc.berkeley.edu/forum_thread.php?id=14413

thanks you, Keith, for the hint. I downloaded the certificate and replaced it in the BOINC program folder.
Then, downloading tasks worked fine.

However, both tasks failed after about 11 seconds with
195 (0xc3) EXIT_CHILD_FAILED

see here:
https://www.gpugrid.net/result.php?resultid=32649276
and here:
https://www.gpugrid.net/result.php?resultid=32649255

anyone any idea what the problem is?

You should update the Microsoft Visual C++ runtime library as well:
https://aka.ms/vs/16/release/vc_redist.x86.exe
https://aka.ms/vs/16/release/vc_redist.x64.exe
Then restart Windows.

Zoltan, thanks for the hint.
I now tried to crunch tasks on the new PC with the two RTX3070 inside.
On this machine, I updated with the Microsoft Visual C++ runtime libraries several weeks ago, after there was a problem with Folding@home.

However, the tasks are failing, too. Whereas one interesting thing was that with the three tasks which were downloaded, in one case the cuda version was 101, in the two other cases it was 1121.

https://www.gpugrid.net/result.php?resultid=32649296 (101)
https://www.gpugrid.net/result.php?resultid=32649291 (1121)
https://www.gpugrid.net/result.php?resultid=32649279 (1121)

so I suspect the tasks don't run on Ampere cards yet :-(

All three tasks failed with

Richard,

'vcruntime140_1.dll' is indeed missing. Although for sure I had installed the two Visual CC++ files several weeks ago.
No idea what happened.

I will try to reinstall the two files and see what happens.

VC runtime package re-installed, a double check has shown that 'vcruntime140_1.dll' is present in C:\Windows\System32 directory.
System restart and new download of GPUGRID tasks.

However, they also failed after a few seconds:

https://www.gpugrid.net/result.php?resultid=32649623
https://www.gpugrid.net/result.php?resultid=32649596

The reason obviously is: ACEMD v2.18 (cuda101)

Why do I not received the correct version cuda1121? What's going wrong?

The reason obviously is: ACEMD v2.18 (cuda101)
Why do I not received the correct version cuda1121? What's going wrong?

The reason obviously is: ACEMD v2.18 (cuda101)
Why do I not received the correct version cuda1121? What's going wrong?

I retried downloading more tasks, and this time I obviously received the ones with the correct cuda version 1121 ...
However, for the Ampere cards, the cuda version issue needs to get resolved quickly. Otherwise, it's like lottery :-(

The reason obviously is: ACEMD v2.18 (cuda101)
Why do I not received the correct version cuda1121? What's going wrong?

I retried downloading more tasks, and this time I obviously received the ones with the correct cuda version 1121 ...
However, for the Ampere cards, the cuda version issue needs to get resolved quickly. Otherwise, it's like lottery :-(

I think you should install the latest NVidia driver (472.12) to fix this.

I have successfully completed 2 tasks today labelled as cuda101 on separate Ampere hosts, the same hosts also had other cuda101 tasks that failed today as well. Drivers are 470.xx

I have successfully completed 2 tasks today labelled as cuda101 on separate Ampere hosts

since your hosts are hidden, can you link to these Ampere hosts that processed a cuda101 task?

when you say "Ampere host" do you mean that they ONLY have Ampere GPU(s) installed? or perhaps some secondary GPU was older and actually performed the computation?

was it one of the Beta cuda101 apps?

Did you reboot the host after fixing the file?

Looks like BOINC still threw a fault possibly with the zipping feature that may still depend on the expired SSL certificate.

You may have to wait for a new BOINC that has been hinted in development for ASAP release.

since your hosts are hidden, can you link to these Ampere hosts that processed a cuda101 task?

when you say "Ampere host" do you mean that they ONLY have Ampere GPU(s) installed? or perhaps some secondary GPU was older and actually performed the computation?

was it one of the Beta cuda101 apps?

I only run single GPU systems, unless you count the iGPUs (which I don't use for BOINC) in some Windows machines. I'm only running some of my linux machines with no iGPUs on GPUGrid at the moment, so no secondary GPUs involved.

No, it wasn't a Beta cuda101 task or app.

I'll show you the more interesting task as it first failed on a 3070 with a newer driver than mine. It is labelled as "New version of ACEMD v2.18 (cuda101)" and it showed as cuda101 whilst running on the client. http://gpugrid.net/workunit.php?wuid=27080654

I also have a third cuda101 task running, nearly 70% completed, on a different machine with only an Ampere card in it.

My best guess is it’s some bug/idiosyncrasy on your system where it’s confusing the cuda101 and cuda1121 apps. Maybe it “thinks” it’s running the 101 executable but somehow actually called up the 1121 executable. Just a guess based on the vast majority of 101 failures on that system for the wrong architecture, even after the successful run.

It could be a bug in the app too I guess. I just haven’t seen that anywhere else. If you look in the gpugrid.net project folder you’ll find two separate executables for acemd3. Only difference is one is compiled with cuda101 and the other is compiled with cuda1121, according to top, both are referred to as just “acemd3”. I don’t know the exact mechanism that could cause one app to be used in place of another, but since both are present I can imagine it happening. BOINC isn’t the most robust software, lots of bugs, especially in older versions. But to me this makes more sense than some cuda101 tasks randomly working on Ampere when cuda101 has no knowledge of Ampere.
____________