for my own amusement, i want to run just one task at a time - so I generated the usual app config.

BM finds it but it doesn't work - it runs on all 4 cores. Previously this has been because of the wrong app name - but I got this one from the client-state.xml file.

<app_config>
<app>
<name>universe-BHspin</name>
<max_concurrent>1</max_concurrent>
</app>
</app_config>

Can anyone correct my mistake please?

BM 7.2.42
OS Ubuntu 14.04

I know that it might be a bit far-fetched on a Linux machine but as I cannot see what's wrong ...

If you created the file with windows notepad and then moved it to Linux, it might have a character set identifier in the first two characters of the text file, indicating that it has been saved as UTF8

If this is the case, it would confuse the XML parser of the core client and it wouldn't recognize the first <app_config> tag

My guess is that it's running 1 BHspin and 3 ULX?

If you want just 1 WU to run you should use

<app_config>
<project_max_concurrent>1</project_max_concurrent>
</app_config>

Edit: My bad, i just noticed that <project_max_concurrent> is only supported since BOINC 7.4.9. You will need to upgrade your client to use this option. Sorry.

Thanks for responding.

1. I've set in preferences for just the BHspin tasks and so I get 4 of these running
2. I created it using gedit on Linux directly into the project folder
3. 7.4.9+ is not a stable version otherwise I would try it.