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What the World's Fastest Systems Say About Linux

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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 when the new fastest supercomputer system list comes out. The most recent list, released last month, reinforces Linux leadership, as every single one of the top 10 fastest supercomputing systems in the world runs Linux. We had previously seen Linux in four of the top five systems or seven to eight of the top 10, but this year was marked by a sweep of the top 10 for Tux.

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RapidDisk / RapidCache 3.4 now available.

RapidDisk is an advanced Linux RAM Disk which consists of a collection of modules and an administration tool. Features include: Dynamically allocate RAM as block device. Use them as stand alone disk drives or even map them as caching nodes to slower local disk drives. I pushed 3.4 into the mainline earlier this morning. Changes include:
  • Added ability to autoload RapidDisk volumes during module insertion.
  • Fixed bug in RapidDisk (volatile) volume size definition across 32 to 64 bit types.
  • Making use of BIT() macro in the driver.
  • Removed RapidDisk-NV support. It was redundant with the recently kernel integrated pmem code.
You can pull it from the git, yum, ZYpp & apt repos or download it from the SourceForge project page. To stay updated, you can follow the RapidDisk Google+ page.