Schrödinger Best Practices vs AWS PCS Limits
Modern HPC integration practices for Schrödinger workloads tend to want 10–12 Slurm partitions and matching host entries, because Maestro doesn’t let chemists pass Slurm arguments directly. That design preference collided with AWS Parallel Computing Service on a recent deployment: PCS has a hard, non-adjustable cap of 10 partitions and 10 compute node groups per cluster. […]
AWS PCS resolves Licenses length issue
Good news: The 1024-character limit in the AWS PCS custom slurm configuration parameter that enables license-aware job scheduling was recognized by AWS as a “bug” and recently resolved. The new character limit is 2048. TL;DR AWS Parallel Computing Service (PCS) previously capped every slurmCustomSettings.parameterValue at 1,024 characters. The limit applied uniformly through Terraform, the AWS […]