Computer Architecture Today

Informing the broad computing community about current activities, advances and future directions in computer architecture.

IISWC 25th Anniversary

by Lieven Eeckhout on Dec 29, 2022 | “If you cannot measure it, you cannot improve it.” – Lord Kelvin The IEEE International Symposium on Workload Characterization (IISWC) just celebrated its 25th anniversary. This is an excellent opportunity to look back and forward—at what has happened over the past 25...

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Fast memcpy, A System Design

by Richard L. Sites on Dec 19, 2022 | Tags: , , ,

When I worked at Google, fleet-wide profiling revealed that 25-35% of all CPU time was spent just moving bytes around: memcpy, strcmp, copying between user and kernel buffers in network and disk I/O, hidden copy-on-write in soft page faults, checksumming, compressing,...

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