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Optimizing GPU Performance by Mapping Memory Hierarchy

Patrick Viry writes that the Ateji PX approach to GPU programming makes it easy to map the GPU memory hierarchy, which is essential for achieving good performance on GPUs or any hardware with non-uniform memory accesses (NUMA). What is important here is that memory hierarchy is expressed in terms of lexical scope. A variable from a different level in...

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IBM ‘Blue Waters’ Super Node Washes Ashore in August

Big Blue has been talking about the Power7-based “Blue Waters” supercomputer nodes for so long that you might think they’re already available. But although IBM gave us a glimpse of the Power 775 machines way back in November 2009, they actually won’t start shipping commercially until next month – August 26, to be exact.

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JP Morgan Uses FPGAs Accelerators for Risk Analysis in Near Real-time

In this video, Peter Richards and Stephen Weston from J.P. Morgan present a Stanford Computer Systems Colloquium discussing their use of Maxeler Technology.

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New Whitepaper: Accelerating Lossless Data Compression with GPUs

A newly published whitepaper looks at the modification of the Huffman algorithm which permits uncompressed data to be decomposed into independently compressible and decompressible blocks, allowing for concurrent compression and decompression on multiple processors. One major difficulty here in achieving good speedup with slim negative side effects that lossless data...

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What the World's Fastest Systems Say About Linux

I've been tracking the Top500 Supercomputer List with a particular eye on Linux for some time now, highlighting how Linux continues to power the majority of the world's fastest supercomputing systems. So it's no surprise to see continued dominance for Linux, but there are some interesting changes every six months...

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