Abstract
Due to the difference between processor speed and memory speed, the latter has steadily appeared further away in cycles to the processor. Superscalar out-of-order processors cope with these increasing latencies by having more in-flight instructions from where to extract ILP. With coming latencies of 500 cycles and more, this will eventually derive in what we have called Kilo-Instruction Processors, which will have to handle thousands of in-flight instructions. Managing such a big number of in-flight instructions must imply a microarchitectural change in the way the re-order buffer, the instructions queues and the physical registers are handled, since simply up-sizing these resources is technologically unfeasible. In this paper we present a survey of several techniques which try to solve these problems caused by thousands of in-flight instructions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
