Optimizations of Client's side communications in a Distributed File System within a Myrinet Cluster

International audienceThis paper presents a study of the interaction between high-speed interconnects and a distributed file system client. We use our remote file access protocol and network with the software layer to show how the highly specific programming model of high-speed interconnects may be used in a high performance distributed file system client. We present both a user-level and a kernel-level client implementations with either buffered or non-buffered accesses. These implementations show high performances and may be transparently used by applications. Our improvements focus on pin-down cache techniques and memory registration issues. Our modifications show no impact on its performances while the network usage in the distributed file system client is improved

Optimizations of Client's side communications in a Distributed File System within a Myrinet Cluster

(eng) This paper presents a study of the interaction between high-speed interconnects and a distributed file system client. We use our ORFA remote file access protocol and Myrinet network with the GM software layer to show how the highly specific programming model of high-speed interconnects may be used in a high performance distributed file system client. We present both a user-level and a kernel-level client implementations with either buffered or non-buffered accesses. These implementations show high performances and may be transparently used by applications. Our improvements focus on pin-down cache techniques and memory registration issues. Our GM modifications show no impact on its performances while the network usage in the distributed file system client is improved