RT appreciated. Anyone looking for an excellent Linux kernel developer? Ruowen (@chinqrw) is one of the best. He is on the market due to the shutdown of Red Hat China. He's mainly looking in China, but also open to jobs elsewhere.
He co-leads the Rex project (https://t.co/B2CZSwiJyq) with @Jinghao_J which they started it at UIUC. He also has extensive experience working on Red Hat's kernel-QE. I worked with Ruowen as my TA of CS 423 and on the Rex project. He is great!
LLMs can write GPU kernels, but they still struggle to make them assembly-fast. Real-world performance requires complex, tightly coupled optimizations across the whole kernel.
ARGUS is the first agentic framework to achieve assembly-fast performance on real-world GPU kernels. On AMD MI300X, it reaches 99–104% of hand-optimized assembly throughput on GEMM, FlashAttention, and fused MoE, while running 2–1543× faster than existing agentic systems.
ARGUS makes these global properties explicit through data-flow invariants. These invariants specify what should match at key program points, such as ensuring tensor core instructions see consistent matrix operands despite changes to swizzled memory layouts, tiling, and pipelining.
That gives both the compiler and the LLM dense guidance beyond sparse unit tests, verified at compile time with abstract interpretation and SMT solving.
https://t.co/xpEtZyVk7I
I wrote a post-mortem article on how glitches in an AI paper writing assistant tool in the last 30 minutes caused my group a missed SOSP deadline that we worked on for more than a year.
https://t.co/9ZkBQTGdaR
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if you’re a CS/EE student
write your thesis on JIT compilation of eBPF for NVMe controllers
there’s huge career alpha in computational storage; the standards are *just* starting to exist (TP4091)
HEARTBREAKING: Ex-PhD student Brendt Christensen found GUILTY of posing as cop, luring, abducting, R*ping & d*capitating Chinese scholar Yingying Zhang in his apartment in 2017.
Her dism*mbered remains STILL missing.
Never forget Yingying’s story.
Sounds incredible until you read the fine print. The compiler generates less efficient code than GCC with all optimizations disabled. It doesn’t have its own assembler or linker. It can’t produce a 16-bit x86 code generator. And Carlini himself says it has “nearly reached the limits of Opus’s abilities.” New features and bugfixes kept breaking existing functionality.
So what did $20,000 and two weeks actually buy? A compiler that passes 99% of GCC’s torture tests but can’t match the output quality of a tool that’s had 37 years of human engineering. That’s the constraint nobody’s pricing in.
The real story is in the cost curve, not the capability demo. $20,000 for 100,000 lines means $0.20 per line of generated code. A senior compiler engineer costs roughly $150/hour. At maybe 50 polished lines per hour for something this complex, that’s $3/line. AI just did it at 15x cheaper, and it will only get cheaper from here.
But the code isn’t equivalent. The AI version needs a human to finish the assembler, fix the linker, optimize the output, and prevent regressions. Those are the hardest 20% of the problem, and they represent 80% of the engineering value. Anthropic built the demo. Shipping the product still requires humans.
This tells you exactly where we are in the autonomous software timeline. AI can now produce impressive first drafts of complex systems at trivial cost. Turning those drafts into production software still requires the judgment that costs $300K+ per year in compiler engineer salary. The gap between “compiles the Linux kernel” and “replaces GCC” is measured in decades of accumulated engineering wisdom that no model has internalized yet.
The companies that understand this will use agent teams to generate the 80% and hire engineers to finish the 20%. The companies that don’t will ship $20,000 compilers that produce slower code than a free tool from 1987.
@Yuchenj_UW My experience is that Codex seems to have better world knowledge which make it more effective on triaging and debugging. Claude code excels in day to day software engineering tasks that need more automation.
Performance Hints
Over the years, my colleague Sanjay Ghemawat and I have done a fair bit of diving into performance tuning of various pieces of code. We wrote an internal Performance Hints document a couple of years ago as a way of identifying some general principles and we've recently published a version of it externally.
We'd love any feedback you might have!
Read the full doc at: https://t.co/jej95g236P