Page 24 - Multipath MIPS

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Implicit Multithreading

 Threads created dynamically at runtime by the hardware

 Thread level speculation on sequential (single-threaded)
programs (TLP+TLS)

 Utilized to increase the performance of sequential programs.
 Minor/No compiler support

 Examples of Implicit Multithreading (more close to CMPs):

 Multiscalar Processor (control and data speculation/CFGs)
 Trace Processor(prog.=multiple trances/multi-branch-pred)
 Speculative Multithreading (dynamic ILP extraction/threads

execute successive iterations of same loop/loop closing bran.)
 Speculative Data-Driven Multithreading (critical instructions)

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