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As high-end computing machines continue to grow in size, issues such as fault tolerance and reliability limit application scalability. Current techniques to ensure progress across faults, like checkpoint-restart, are increasingly problematic at these scales due to excessive overheads predicted to more than double an application's time to solution.(More)
The challenge of balancing between power and performance is now well established. While research in this area is well underway, the ability to measure power and energy in situ has remained an obstacle. This problem is magnified in the field of High Performance Computing (HPC). To meet this challenge, a device called PowerInsight has been designed to(More)
Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. Executive Summary High‐end computing(More)
Recognition of the importance of power in the field of High Performance Computing, whether it be as an obstacle, expense or design consideration, has never been greater and more pervasive. In response to this challenge, we exploit the unique power measurement capabilities of the Cray XT architecture to gain an understanding of the power requirements of(More)
Power has recently been recognized as one of the major obstacles in fielding a Peta-FLOPs class system. To reach Exa-FLOPs, the challenge will certainly be compounded. In this paper we will discuss a number of High Performance Computing power related topics. We first describe our implementation of a scalable power measurement framework that has enabled us(More)
As part counts in high performance computing systems are projected to increase faster than part reliabilities, there is increasing interest in enabling jobs to continue to execute in the presence of failures. Process replication has been shown to be a viable method to accomplish this, but previous studies have focussed on full replication levels (dual,(More)
This paper will summarize an IO performance analysis effort performed on Sandia National Laboratories Red Storm platform. Our goal was to examine the IO system performance and identify problems or bottle-necks in any aspect of the IO sub-system. Our process examined the entire IO path from application to disk both in segments and as a whole. Our final(More)
This paper describes a methodology for implementing disk-less 1 cluster systems using the Network File System (NFS) that scales to thousands of nodes. This method has been successfully deployed and is currently in use on several production systems at Sandia National Labs. This paper will outline our methodology and implementation, discuss hardware and(More)