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Method and Apparatus for Fast Synchronization and Out-of-Order Execution in Meta-Program Based Computing Systems

This document, US Patent 8,301,870 B2, outlines a method and apparatus developed by International Business Machines Corporation (IBM) to enhance synchronization and out-of-order execution in meta-program based computing systems. It addresses challenges in multi-threaded processor performance.

Core Technology

The invention focuses on improving thread synchronization in out-of-order processors. It utilizes a meta-program approach where synchronization is achieved by monitoring instruction addresses, rather than traditional memory operations. Key components include a Meta-Program Control Unit (MPCU) for generating specialized instruction tags (Itags) that manage inter-thread dependencies.

Benefits

This system allows for efficient, speculative execution of both main and meta-program threads, leading to faster synchronization and improved overall processor performance. It is designed to work with advanced architectures, potentially including IBM's POWER processors.

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