Chris Feilbach @chrisf_cpuarch
Senior CPU architect focusing on memory systems. My wife and I run Pointer Wars (no affiliation with any current nor former employer!). Opinions are my own. chrisfeilbach.com California Joined May 2025-
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Great book!
Pointer Wars, the internet's most awesome* high performance C and C++ programming competition is back for another round. This August, we'd like to expand it to 1,000 (free or paid) participants! Much more here: chrisfeilbach.com/2025/06/21/sig…
Yes.
AMAA: CPU memory systems architect. Ask me anything about memory and I'll reply about what is publicly known and good practice (subject to non-disclosure/US law). I'm looking for blog topics and/or directions to take my Pointer Wars C programming challenge.
When's the last time you thought about how your CPU makes decisions as it executes your software? If the answer is "never" or "years ago", I bet you'll learn something reading this: chrisfeilbach.com/2025/07/05/und…
In order to make C programming more palatable to the youth, I am proposing replacing the assert macro in assert.h with ONGOD(). Eg ONGOD(code_bussin == true) Thank you for your attention to this matter.
Lazy Sundays are cool and all, but removing useless malloc() and free() invocations and achieving a 17% wall time speedup in your C based Breadth First Search code is much cooler. chrisfeilbach.com/2025/06/22/cus…
Just blasted off 23 emails to the new participants in Pointer Wars. My wife and I run this competition to help people learn how to write high performance and high quality C code. The June 15th round is still open. Read more here: chrisfeilbach.com/2025/06/08/poi…
Is there a Windows tool like valgrind that you like?
malloc() isn't free. Dynamic memory allocation is a source of performance overhead. I wrote much about this here, based on the fun we've been having during Pointer Wars: chrisfeilbach.com/2025/06/09/mal…
Oof.
If your sleep is ever off, see a doctor. Undiagnosed sleep apnea nearly destroyed my career.
If your sleep is ever off, see a doctor. Undiagnosed sleep apnea nearly destroyed my career.
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