Title :
Putting Faulty Cores to Work
Author :
Ansari, Amin ; Feng, Shuguang ; Gupta, Shantanu ; Mahlke, Scott
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
Necromancer, a robust and heterogeneous core coupling execution scheme, exploits a functionally dead core to improve system throughput by supplying hints regarding high-level program behavior. Necromancer partitions a chip multiprocessor system´s cores into multiple groups, each of which shares a lightweight core that can be substantially accelerated using execution hints from the faulty core.
Keywords :
fault tolerant computing; microprocessor chips; multiprocessing systems; chip multiprocessor system; core coupling execution scheme; dead core extraction; high-level program behavior; necromancer scheme; Accuracy; Bars; Pipelines; Redundancy; Throughput; chip multiprocessors; heterogeneous core coupling; manufacturing defects; system throughput; wear out;
Journal_Title :
Micro, IEEE
