The settings are set correctly, but it appears to be a bug with the library version we're using: https://discuss.xgboost.ai/t/n-jobs-1-no-longer-uses-all-cores/1955/4
A quick test upgrading from 1.3.1 to 1.7.1 works fine in the singularity image.
There should be a dev branch created to upgrade the 3+ year old frozen libraries and ensure everything still works as intended.
The settings are set correctly, but it appears to be a bug with the library version we're using: https://discuss.xgboost.ai/t/n-jobs-1-no-longer-uses-all-cores/1955/4
A quick test upgrading from 1.3.1 to 1.7.1 works fine in the singularity image.
There should be a dev branch created to upgrade the 3+ year old frozen libraries and ensure everything still works as intended.