In T156140#3027045 ff. i used gadolinium.mgmt.eqiad.wmnet to test enabling/disabling Hyperthreading with racadm commands instead of going to BIOS, but with little success.
The result was some failing jobs in the jobqueue. When i tried a soft racreset to get the queue flushed, it did not come back. It just started hanging and i can't SSH to it anymore now.
Please do a hard reset of the DRAC. Thank you