I re-enabled quantum chemistry on 3 of my Linux systems for the first time in over a month and it appears all are going to error out.

Stderr output
<core_client_version>7.8.3</core_client_version>
<![CDATA[
<message>
process exited with code 195 (0xc3, -61)</message>
<stderr_txt>
01:21:33 (24790): wrapper (7.7.26016): starting
01:21:33 (24790): wrapper (7.7.26016): starting
01:21:33 (24790): wrapper: running ../../projects/www.gpugrid.net/Miniconda3-4.3.30-Linux-x86_64.sh (-b -u -p /var/lib/boinc-client/projects/www.gpugrid.net/miniconda)
Python 3.6.3 :: Anaconda, Inc.
cat: /var/lib/boinc-client/projects/www.gpugrid.net/miniconda/.messages.txt: No such file or directory
01:21:45 (24790): miniconda-installer exited; CPU time 10.905773
01:21:45 (24790): wrapper: running /var/lib/boinc-client/projects/www.gpugrid.net/miniconda/bin/python (pre_script.py)

CondaError: FileNotFoundError(2, 'No such file or directory')
CondaError: FileNotFoundError(2, 'No such file or directory')
CondaError: FileNotFoundError(2, 'No such file or directory')


Traceback (most recent call last):
File "pre_script.py", line 13, in <module>
raise Exception("Error installing h5py")
Exception: Error installing h5py
01:25:43 (24790): $PROJECT_DIR/miniconda/bin/python exited; CPU time 90.551737
01:25:43 (24790): app exit status: 0x1
01:25:43 (24790): called boinc_finish(195)

</stderr_txt>
]]>

This should have worked. These were 16 thread dual Xeon and at one time I recall having 14 threads assigned. Now I see only 4 and something is not working as before. These are small systems with 32gb flash drives and running 16.10 but that was not a problem before.

All QC tasks error on my 2 Linux boxes, one with Opteron 1210 and the other AMD E-450, both running SuSE Linux Leap 42.3.
Tullio

All QC tasks error on my 2 Linux boxes, one with Opteron 1210 and the other AMD E-450, both running SuSE Linux Leap 42.3.
Tullio

These were 16 thread dual Xeon and at one time I recall having 14 threads assigned. Now I see only 4 and something is not working as before. These are small systems with 32gb flash drives and running 16.10 but that was not a problem before.

All QC tasks error on my 2 Linux boxes, one with Opteron 1210 and the other AMD E-450, both running SuSE Linux Leap 42.3.
Tullio

They might error at first but if you let it run it might end up working.

All QC tasks error on my 2 Linux boxes, one with Opteron 1210 and the other AMD E-450, both running SuSE Linux Leap 42.3.
Tullio

They might error at first but if you let it run it might end up working.

I've run nine of them, all failed.
Tullio

These were 16 thread dual Xeon and at one time I recall having 14 threads assigned. Now I see only 4 and something is not working as before. These are small systems with 32gb flash drives and running 16.10 but that was not a problem before.

There's a bug in the app, which prevents more than 1 task starting simultaneously. When the task started successfully, you can start another task manually. Since there's no automated way for this, you should pause all but one task before you shut down your computer, then start them one by one. The other option is to limit the concurrently running QC apps to 1. Since this app uses only 4 threads (cores) you should utilize your other CPU cores with a different project.
To do this you should create / modify your app_config.xml file in the projects\www.gpugrid.net folder.

<app_config> <app> <name>QC</name> <max_concurrent>1</max_concurrent> </app> <app_version> <app_name>QC</app_name> <plan_class>mt</plan_class> <avg_ncpus>4</avg_ncpus> </app_version> </app_config>

<app_config> <app> <name>QC</name> <max_concurrent>1</max_concurrent> </app> <app_version> <app_name>QC</app_name> <plan_class>mt</plan_class> <avg_ncpus>4</avg_ncpus> </app_version> </app_config>

I've downloaded 2 tasks on the HP laptop which has no GPU board, so it won't download GPU tasks. The first erred after 1'51". It is running a single core Atlas task with VirtualBox.
Tullio

I've downloaded 2 tasks on the HP laptop which has no GPU board, so it won't download GPU tasks. The first erred after 1'51". It is running a single core Atlas task with VirtualBox.
Tullio

https://www.gpugrid.net/apps.php

https://www.gpugrid.net/apps.php

All LHC@home projects use VirtualBox save SixTrack. I am running only Atlas@home on my 3 PCs. two Linux and one Windows 10 since all other VirtualBox projects fail, for reasons nobody explained to me. I was one of the Alpha tester at Test4Theory@home on invitation by dr.Ben Segal of CERN, a member of the Internet Hall of Fame.
Tullio

Same problem over here.
I ran QC tasks successfully for several months. Then, they suddenly all errored out. The system was unchanged. I checked a second system: Same issue.
The .xml file shown above was there all the time, it does not prevent the problem.

My suspicion is:
If another BOINC CPU project is allowed to fetch and compute tasks on the same machine, it appears that GPUGRID occupies just one core and then fails to free-up the other cores from the tasks of the other project to start MT computation.
Bafflingly, this worked without any problems around 4 weeks ago (probably the auxiliary apps were different than they are at present).
So, to me there seems to be an issue in the app - maybe with task priorities?
Please correct that, I can't support the project as long as this bug hasn't been resolved and for now I have withdrawn my machines.

Michael.
____________
President of Rechenkraft.net - Germany's first and largest distributed computing organization.

Please provide the id of a failed task.

We have been debugging one specific issue (see the other thread).

Michael asked

Which of the many other threads relevant to this issue exactly do you mean?

So, where is the ultimate solution to the problem?
Unfortunately, I couldn't find it in the linked thread.

Michael.
____________
President of Rechenkraft.net - Germany's first and largest distributed computing organization.

So, where is the ultimate solution to the problem?
Unfortunately, I couldn't find it in the linked thread.

Michael.

Looks like the problem is solved. Both of my machines now return valid CPU QC results.

Michael.
____________
President of Rechenkraft.net - Germany's first and largest distributed computing organization.

There's a bug in the app, which prevents more than 1 task starting simultaneously. To do this you should create / modify your app_config.xml file in the projects\www.gpugrid.net folder.

<app_config> <app> <name>QC</name> <max_concurrent>1</max_concurrent> </app> <app_version> <app_name>QC</app_name> <plan_class>mt</plan_class> <avg_ncpus>4</avg_ncpus> </app_version> </app_config>