DoE ASCI Purple Requirements
Parallel I/O Bandwidth - Multiple clients access one file at hundreds of GB/sec.
Support for very large file systems
Single files of multi-terabyte size must be permitted.
Scalable file creation & Metadata Operations
- Millions of files in the same directory
- Thousands of file creates per second within the same directory
Archive Driven Performance - The file system should support high bandwidth data movement to tertiary storage.
Adaptive Pre-fetching - Sophisticated pre-fetch and write-behind schemes are encouraged, but a method to disable them must accompany them.
Flow Control & Quality of I/O Service