SIGARCH
The ACM Special Interest Group on Computer Architecture
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Latest posts
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A Happy 6th Birthday to the Computer Architecture Student Association
As we approach Computer Architecture Student Association’s (CASA) 6th birthday, we want to take a step back and reflect on the previous years’ contributions, as well as highlight the exciting programming that CASA is bringing in the upcoming year. Our mission continues to ensure…
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Compound Memory Models
When components with distinct memory models share memory, what rules govern the interface between them? Many of today’s systems already have to answer this question. On NVIDIA’s Grace Hopper, for example, an Arm CPU and a GPU share one coherent memory; the CPU follows Arm’s…
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Eighth Annual Undergraduate Mentoring Workshop (uArch 2026)
The uArch 2026 Cohort The 8th annual Undergraduate Architecture Mentoring (uArch) Workshop took place alongside the International Symposium of Computer Architecture (ISCA) 2026, in Raleigh North Carolina. Each year, uArch introduces undergraduate and early master’s students to…
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The System Had the Final Word
Lessons from using an AI coding agent in LLM systems research This project began with a routing problem. When an LLM request arrives, the system must decide which GPU will execute prefill and which GPU will execute decode. The same GPU can execute both phases. Alternatively, a…
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7th Branch Prediction Championship : Part II
This is the second (and final) post in the series covering the Next Generation Branch Prediction Champtionship (CBP-NG). Part-I details the provided infrastructure and the winning submissions. Distilled Branch Predictors (Simha Sethumadhavan – Columbia University) The author…
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7th Branch Prediction Championship: Part I
Background The Next Generation Branch Prediction Championship (CBP-NG) aimed to address practical implementation challenges in branch prediction, moving beyond metrics used in earlier iterations. By emphasizing energy-adjusted performance—incorporating throughput, timing, and…
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An Introduction to Zero-Knowledge Proofs for Computer Architects
Zero-Knowledge Proofs As conversations about LLMs continue to dominate computer science, the cryptographic community has been abuzz around a different three letter acronym: ZKP. Zero-Knowledge Proofs (ZKPs) allow a prover to convince a verifier that a statement is true without…
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Compressing LLMs without Compromise
LLM execution requires moving gigabytes of data, which includes static model weights, the generated KV cache, and other intermediate representations. Depending on the deployment, this may involve communication across the network, PCIe links, accelerator links (e.g., NVLink), and…
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When AI Enters the Architecture Design Loop, What Counts as a Contribution?
AI is starting to shape architectural mechanisms, workloads, and evaluation. To make sense of it, we need a compact, shared way to preserve enough of that process for other groups to evaluate and build on AI-assisted claims. At the 53rd ISCA in Raleigh, AI for architecture…
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ISCA 2026 Trip Report
The conference The 53rd International Symposium on Computer Architecture (ISCA) was held at the Raleigh Convention Center in Raleigh, North Carolina, from June 27 to July 1, 2026. Raleigh sits at one corner of the Research Triangle, anchored by North Carolina State University,…