Power Processing Element: Difference between revisions

Revision as of 21:38, 30 December 2022

Revision as of 22:44, 27 February 2023

Line 63:

== Multithreading ==

{{main | Simultaneous multithreading}}

The PPU runs two [[Thread_(computing)|hardware threads]] simultaneously. The [[Processor register|main registers]] for code execution are duplicated, as are the exception and interrupt-handling registers, and several essential arrays and queues. They can generate exceptions simultaneously, and perform branch prediction on their individual branch histories. The execution engine and caches are not duplicated though - so it is still just a single-core design.<ref>[{{cite book |url= https://wwwlink.springer.com/cdachapter/content10.1007/document978-1-4419-0308-2_2 |title=Practical Computing on the Cell Broadband Engine |first=Sandeep |last=Koranne |chapter-url=https:/cda_downloaddocument/9781441903075-c1link.pdfspringer.com/chapter/10.1007/978-1-4419-0308-2_2 |chapter=Chapter 2 - The Power Processing Element (PPE) |isbn=978-1-4419-0307-5 |publisher=[[Springer Science+Business Media]] |date=July 15, 2009}}</ref>

== Floating point capacity ==