Speculative multithreading

Thread Level Speculation (TLS), also known as Speculative Multithreading (SpMT) is a runtime parallelization technique which uncovers parallelism that static (compile-time) parallelization techniques fail to exploit. This particular case of speculative execution occurs at the thread level as opposed to the instruction level and can be implemented both in hardware as well as in software.

Further reading

Speculative Multithreading

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