A important warning to everyone trying to run cosmology@home in cpus with more than 8 threads.

It simply does not work. The application will crash and get frozen if you have more than 8 threads. Fortunately, we can fix it, well, sort of.

First, we must go to the boinc folder. In windows systems it is C:\ProgramData\BOINC\ , in linux systems most users will have it installed in /var/lib/boinc .

Once there we enter the projects folder, and then, the www.cosmologyathome.org folder. And we create a file named app_config.xml . In windows, make sure you are using the UTF-8 enconding, and not the ANSI one and copy and paste this :

<app_config>
 <app>
       <name>camb_boinc2docker</name>
       <max_concurrent>1</max_concurrent> 
 </app>
<app_version>
      <app_name>camb_boinc2docker</app_name>
      <plan_class>vbox64_mt</plan_class>
      <avg_ncpus>8</avg_ncpus>
  </app_version>
</app_config>

It will lock the project to a maximum of 8 cores, case we want to lock it to less, we just have to change that number 8 for a smaller number.

I found this answer originally in the boinc forums, but i have not managed to find the original post again.