About Hammer
Frequently asked questions about Hammer.
Can you remove me from the Hammer mailing list?
Your subscription in the Hammer mailing list is tied to your account on Hammer. If you are no longer using your account on Hammer, your account can be deleted from the My Accounts page. Hover over the resource you wish to remove yourself from and click the red 'X' button. Your account and mailing list subscription will be removed overnight. Be sure to make a copy of any data you wish to keep first.
How is Hammer different than other Community Clusters?
- Hammer is optimized for loosely-coupled, high-throughput computation. The scheduler is configured to favor starting jobs quickly and ensure maximum utilization.
- The maximum job size is 8 processor cores. If you require resources with a greater degree of parallelism, please consider an alternate community cluster system optimized for high-performance, parallel computing.
- Jobs are scheduled on a whole-node basis and will not share nodes with other jobs by default. You may submit jobs that use less than one node, however, you will be allocated a whole node from your queue unless node sharing is enabled. Node sharing is enabled by adding ‑l naccesspolicy=singleuser to your job's requirements.
Do I need to do anything to my firewall to access Hammer?
No firewall changes are needed to access Hammer. However, to access data through Network Drives (i.e., CIFS, "Z: Drive"), you must be on a Purdue campus network or connected through VPN.