Non-collective parallel I/O for global address space programming models

— Achieving high performance for out-of-core applications typically involves explicit management of the movement of data between the disk and the physical memory. We are developing a programming environment in which the different levels of the memory hierarchy are handled efficiently in a unified transparent framework. In this paper, we present our experiences with implementing efficient non-collective I/O (GPC-IO) as part of this framework. As a generalization of the Remote Procedure Call (RPC) that was used as a foundation for the Sun NFS system, we developed a global procedure call (GPC) to invoke procedures on a remote node to handle noncollective I/O. We consider alternative approaches that can be employed in implementing this functionality. The approaches are evaluated using a representative computation from quantum chemistry. The results demonstrate that GPC-IO achieves better absolute execution times, strongscaling, and weak-scaling than the alternatives considered.

• Type: Conference
• Year: 2007
• Where: CLUSTER
• Authors: Sriram Krishnamoorthy, Juan Piernas, Vinod Tipparaju, Jarek Nieplocha, P. Sadayappan
• Keywords: CLUSTER 2007, Cluster Computing, Efficient Non-collective I/o, Procedure Call, Unified Transparent Framework