Greetings all HPC Users,

We have made some minor adjustments to the HPC default job settings. All jobs by default will now set –hint=nomultithread when submitted, including all sbatch, salloc and srun jobs. 

Since more than 95% of the jobs run faster without multithreading enabled, we think it is better to disable multithreading by default for all the jobs, but still allow users to enable the setting if they think they need the multithreading feature in their job. Users can enable back multithreading by setting –hint=multithread during job submission, if they find their job to run better in multithreading, after testing and comparing the performance.

If you have previously running jobs with multithreading enabled (normally can be determined by whether you set –hint=nomultithread or not, unset means multithreading enabled), you will need to make necessary adjustments to the ntasks count accordingly.

If you have any questions, please let us know through the service desk.

Thank you.

Categories: HPC