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Coping with Copilot
CS educators: AI-based developer tools are gunning for your assignments. Resistance is futile GitHub’s AI-based Copilot tool went public this summer. It’s an amazing tool for software developers. B…
ACM SIGARCH Blog
The ACM Special Interest Group on Computer Architecture
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What Happens to Us Does Not Happen to Most of You
This blog post is a personal account of sexism, harassment, and racism that I and some anonymous members of the computer architecture community have experienced. We are sharing these experiences in…
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Unreasonable Ineffectiveness of Machine Learning in Computer Systems Research
In 1960, the physicist Eugene Wigner wrote a famous essay titled “The Unreasonable Effectiveness of Mathematics in the Natural Sciences” in which he explored the question of why mathematics is so r…
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Leave your OS at home: the rise of library operating systems
The efficiency of Operating Systems (OSes) has always been in the spotlight of systems researchers, ever since the seminal Dijkstra’s THE multiprogramming system in early 60s. But the reason …
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SIMD Instructions Considered Harmful (2017)
In the process of writing a short introduction to RISC-V, we compared RISC-V vector code to SIMD. We were struck by the insidiousness of the SIMD instruction extensions of ARM, MIPS, and x86. We de…
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The Academic Pipeline Stall: Why Industry Must Stand for Academia
The Research Pipeline is Stalling The U.S. National Science Foundation (NSF) froze all outgoing funding, including new awards and scheduled payments on active grants. Over 1,000 NSF research projec…
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Blockchains Considered Harmful: Is Brute-Force Processing Replacing Good Design?
Emerging cryptocurrencies, such as Bitcoin and Ethereum have reached market capitalizations in the billions of U.S. dollars and transactions volumes in the hundreds of millions of U.S. dollars per …
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Fast memcpy, a system design
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/…
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The Importance of End-to-End Thinking in System Design
I once attended a talk by Yoky Matsuoka when I was young – so young, in fact, that I don’t remember when or where the talk was. What I do remember is her telling the story of designing…