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Every Walk’s A Hit: Making Page Walks Single-Access Cache Hits


As memory capacity has outstripped TLB coverage, large data applications suffer from frequent page table walks. We investigate two complementary techniques for addressing this cost: reducing the number of accesses required and reducing the latency of each access. The first approach is accomplished by opportunistically "flattening" the page table: merging two levels of traditional 4 KB p... » read more

Manufacturing Bits: August 25


South Pole neutrinos A group of researchers using an instrument buried deep in the ice at the South Pole have announced a new observation of high-energy neutrinos from beyond our solar system and the galaxy. The IceCube Neutrino Observatory, a cubic-kilometer-sized detector sunk into the ice sheet at the South Pole, allows researchers to see the byproducts of neutrino interactions with the ... » read more