using-the-filesystem

The best way to organize GPFS storage is to place shared project data under /gpfs/project, keep personal files in /gpfs/home, and use scratch space for temporary work during jobs to minimize metadata contention.

You can avoid GPFS metadata bottlenecks by adopting atomic write patterns, staging temporary outputs in /tmp, and finalizing results to shared locations only when ready, which reduces metadata storms from many small file operations.

GPFS performance drops because metadata is shared across nodes and becomes a bottleneck when many users create small files or perform uncoordinated writes, causing contention that slows down overall filesystem throughput.

Yes, you can use /tmp for temporary compute tasks during active jobs. It handles node-local temporary work efficiently, while GPFS scratch space is better suited for larger intermediate data that needs to persist across submission nodes.

You should use atomic writes whenever finalizing output files on GPFS, especially in multi-user environments. This write pattern prevents partial writes and minimizes metadata overhead by staging data before committing it.

Yes, atomic write guidance applies to both home and project spaces. Using safe write patterns across all GPFS locations ensures data integrity and prevents metadata contention regardless of whether the target is personal or shared.