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PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN
VERSION:1.0
BEGIN:VEVENT
DTSTART:20151117T170000Z
DTEND:20151117T173000Z
LOCATION:19AB
DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: Because main memory is vulnerable to errors and failures, large-scale systems and critical servers utilize error checking and correcting (ECC) mechanisms to meet their reliability requirements. We propose a novel mechanism, Frugal ECC (FECC), that combines ECC with fine-grained compression to provide versatile protection that can be both stronger and lower overhead than current schemes, without sacrificing performance. FECC compresses main memory at cache-block granularity, using any left over space to store ECC information. Compressed data and its ECC information are then frequently read with a single access even without redundant memory chips; insufficiently compressed blocks require additional storage and accesses.=0AAs examples, we present chipkill-correct ECCs on a non-ECC DIMM with ×4 chips and the first true chipkill-correct ECC for ×8 chips using a ECC DIMM. FECC relies on a new Coverage-oriented-Compression that we developed specifically for the=0Amodest compression needs of ECC and for floating-point data.
SUMMARY:Frugal ECC: Efficient and Versatile Memory Error Protection through Fine-Grained Compression
PRIORITY:3
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