Tags: CPU

New TOP500 List Led by DOE Supercomputers

The latest TOP500 list of the world’s fastest supercomputers is out, a remarkable ranking that shows five Department of Energy supercomputers in the top 10, with the first two captured by Summit at Oak Ridge and Sierra at Livermore. With the number one and number two systems on the planet, the “...
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New Intel CPU Flaw Exploits Hyper-Threading to Steal Encrypted Data

A team of security researchers has discovered another serious side-channel vulnerability in Intel CPUs that could allow an attacker to sniff out sensitive protected data, like passwords and cryptographic keys, from other processes running in the same CPU core with simultaneous multi-threading...
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NetSpectre Attack Could Enable Remote CPU Exploitation

Researchers from Graz University in Austria released new research on July 26 detailing how the Spectre CPU speculative execution vulnerability could be used over a remote network. In a 14-page report, the researchers dubbed their attack method NetSpectre, which can enable an attacker to read...
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CPU Utilization Is Wrong

Everyone uses %CPU to measure performance, but everyone is wrong, says Netflix's Brendan Gregg in his UpSCALE Lightning Talk. CPU utilization is the metric everyone uses to measure a processor's performance. But %CPU is a misleading measure of how busy your processor really is, says Brendan Gregg,...
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A Primer on Nvidia-Docker — Where Containers Meet GPUs

Traditional programs cannot access GPUs directly. They need a special parallel programming interface to move computations to GPU. Nvidia, the most popular graphics card manufacturer, has created Compute Unified Device Architecture (CUDA), as a parallel computing platform and programming model for...
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The Engine of HPC and Machine Learning

There is no question right now that if you have a big computing job in either high performance computing – the colloquial name for traditional massively parallel simulation and modeling applications – or in machine learning – the set of statistical analysis routines with feedback loops that can do...
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Intel Deploying Updates for Spectre and Meltdown Exploits

Intel reports that company has developed and is rapidly issuing updates for all types of Intel-based computer systems — including personal computers and servers — that render those systems immune from “Spectre” and “Meltdown” exploits reported by Google Project Zero. Intel and its partners have...
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Today's CPU Vulnerability: What You Need to Know

Last year, Google’s Project Zero team discovered serious security flaws caused by “speculative execution,” a technique used by most modern processors (CPUs) to optimize performance.The Project Zero researcher, Jann Horn, demonstrated that malicious actors could take advantage of speculative...
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​Major Linux Redesign in the Works to Deal with Intel Security Flaw

A serious security memory problem in all Intel chips has led to Linux's developers resetting how to deal with memory. The result will be a more secure, but -- as Linux creator Linus Torvalds says -- slower operating system. Long ago, Intel made a design mistake in its 64-bit chips -- and now, all...
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How AMD Wants to Provide ‘Supercomputing for All’

At the SC17 supercomputing conference in Denver Nov. 13, AMD and some of its ecosystem partners announced the availability of a suite of new, high-performance systems powered by AMD EPYC CPUs (central processing units) and AMD Radeon Instinct GPUs (graphics processing units) to accelerate the use...
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