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AMD "Advanced Synchronization Facility" Proposal
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AMD "Advanced Synchronization Facility" Proposal

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The AMD Advanced Synchronization Facility (ASF) is an experimental instruction set extension for the AMD64 architecture that would provide new capabilities for efficient synchronization of access to …

The AMD Advanced Synchronization Facility (ASF) is an experimental instruction set extension for the AMD64 architecture that would provide new capabilities for efficient synchronization of access to shared data in highly multithreaded applications as well as operating system kernels. ASF provides a means for software to inspect and update multiple shared memory locations atomically without having to rely on locks for mutual exclusion. It is intended to facilitate lock-free programming for highly concurrent shared data structures, allowing more complex and higher performance manipulation of such structures than is practical with traditional techniques based on compare-swap instructions such as CMPXCHG16B. ASF code can also interoperate with lock-based code, or with Software Transactional Memory.

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