U-M Armis2: Now available
What is Armis2?
The Armis2 service is a HIPAA-aligned, HPC platform for all University of Michigan researchers and is a successor to the current Armis cluster. It is based on the same hardware as the current Armis system, but uses the Slurm resource manager rather than the Torque/Moab environment.
If your data falls under some non-HIPAA, restricted use agreement, contact firstname.lastname@example.org to discuss whether or not you can run your jobs on Armis2.
Key features of Armis2
- 24 standard nodes using the Intel Haswell-processor, each with 24 cores. More capacity will be added in the coming weeks
- Slurm provides the resource manager and scheduler
- The scratch storage system will provide high-performance temporary storage for compute. See the User Guide for quotas and the file purge policy
- The EDR InfiniBand network is 100Gb/s to each node
- Large Memory Nodes have 1.5TB memory per node
- GPU Nodes with NVidia K40GPUs (4GPUs per node)
ARC-TS will be adding more standard, large memory, and GPU nodes in the coming weeks during the transition from Armis to Armis2, as well as migrating hardware from Flux to Armis2. For more information on the technical aspects of Armis2, see the Armis2 configuration page.
When will Armis2 be available?
Armis2 is available now; you can log in at: armis2.arc-ts.umich.edu.
Armis2 has a simplified accounting structure. On Armis2, you can use the same account and simply request the resources you need, including standard, GPU, and large memory nodes.
Active accounts have been migrated from Armis to Armis2. To see which accounts you have access to, type my_accounts to view the list of accounts. See the User Guide for more information on accounts and partitions.
Armis2 is a “pay only for what you use” model. We will be sharing rates shortly. Send us an email at email@example.com if you have any questions.
Previously, Armis was in tech-preview mode and you were not billed for the service. Use of Armis2 is currently free, but beginning on December 2, 2019, all jobs run on Armis2 will be subject to applicable rates.
More information coming soon.
How does this change impact me?
All migrations from Armis to Armis2 must be completed by November 25, 2019, as Armis will not run any jobs beyond that date. View the Armis2 HPC timeline.
The primary difference between Armis2 and Armis is the resource manager. You will have to update your job submission scripts to work with Slurm; see the Armis2 User Guide for details on how to do this. Additionally, you’ll need to migrate any data and software from Armis to Armis2.
How do I learn how to use Armis2?
To learn how to use Slurm and for a list of policies, view the documentation on the Armis2 website.
Additionally, ARC-TS and academic unit support teams will be offering training sessions around campus. As information becomes available, there will be a schedule on the ARC-TS website as well as Twitter and email.