Setting the number of cores to use

Some Workbench algorithms can use all the cores available on your system for large jobs to make the analysis as fast as possible. This is particularly relevant for some NGS analysis tools.

You can restrict the number of cores that can be used by:

Creating a text file called cpu.properties and saving it under the settings folder in the Workbench installation directory.
Editing that file, entering a single line like this:
```
	maxcores = 3
```
where 3 should be replaced by the maximum number of cores to be used by a given instance tool, like read mapping or de novo assembly. If several such analyses are run concurrently on the Workbench, each of these would be able to use up to this maximum number of cores if needed.
Restart the Workbench.

Please note that configuring the maxcores setting is not a guarantee that the Workbench will never use more than the number of cores specified. However, the use of any higher number of cores would be for very brief and infrequent peaks and should not affect performance of other applications running on your system.

You can download a sample cpu.properties file from
https://resources.qiagenbioinformatics.com/deployment/cpu.properties.

Browse the manual

Setting the number of cores to use