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China’s Tianhe-2 Supercomputer takes top ranking, a win for Intel vs Nvidia

The International Supercomputing Conference (ISC) is under way in Leipzig, and one of the announcements is that China’s Tianhe-2 is now the world’s fastest supercomputer according to the Top 500 list.

This has some personal interest for me, as I visited its predecessor Tianhe-1A in December 2011, on a press briefing organised by NVidia which

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On Supercomputers, China’s Tianhe-1A in particular, and why you should think twice before going to see one

I am just back from Beijing courtesy of Nvidia; I attended the GPU Technology conference and also got to see not one but two supercomputers:  Mole-8.5 in Beijing and Tianhe-1A in Tianjin, a coach ride away.

Mole-8.5 is currently at no. 21 and Tianhe-1A at no. 2 on the top 500 list of the world’s

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NVIDIA CEO Jen-Hsun Huang beats the drum for GPU computing

In his keynote at the GPU Technology Conference here in Beijing NVIIDA CEO Jens-Hsun Huang presented the simple logic of GPU computing. The main constraint on computing is power consumption, he said:

Power is now the limiter of every computing platform, from cellphones to PCs and even datacenters.

CPUs are optimized for single-threaded computing and

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GPU programming coming to low-power and mobile devices – from EU Mont Blanc supercomputer to smartphones

Supercomputing and low-power computing are not normally associated; but at the SC11 Supercomputing conference the Barcelona Supercomputing Center (BSC) has announced a new supercomputer, called the called the Mont-Blanc Project, which will combine the ARM-based NVIDIA Tegra SoC with separate CUDA GPUs. CUDA is NVIDIA’s parallel computing architecture, enabling general purpose computing on the GPU.

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New OpenACC compiler directives announced for GPU accelerated programming

A new standard for accelerating C/C++ programming with compiler directives has been announced at the SC11 Supercomputing conference in Seattle. The new standard is called OpenACC  and has been created by NVIDIA, Cray, PGI (Portland Group) and CAPS enterprise.

OpenACC compiler directives are code annotations that enable the compiler to parallelise code while ensuring thread-safety.

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