James Simmons's scientific contributions

Publications (6)

Preprint
Full-text available
Large scale parallel file systems with multiple storage tiers require policy driven data management to facilitate efficient storage and access of large-scale data. However, management of data across the tiers is challenging due to the massive scale of data being stored. In this talk, we present our initial work on QuickSilver, a lightweight flexibl...
Poster
Full-text available
QuickSilver is a lightweight , flexible and distributed policy engine to manage data on a tiered Lustre filesystem. QuickSilver is composed of single-purpose agents that handle tasks such as gathering file metadata, enforcing policy decisions, and executing policy actions like purging or data migration. These agents are designed to communicate usin...

Citations

... A well chosen default file system setup can ensure that newly created files get written to the performance tier and utilize that tier's superior performance. For instance, Lustre [2] allows storage with different characteristics to be configured into separate OST pools while allowing user files to be visible under as a single unified namespace. However, to distribute files to the appropriate tiers, users must make sure that the file's striping layout is set to use the correct pools. ...