Jiawei Yan
Staff Scientist (tenure Track) at DESY
Hamburg, Germany
Summary
🤩
Rockstar🎓
Top SchoolJiawei Yan is a staff scientist and attosecond XFEL specialist based in Hamburg with seven years of experience bridging accelerator physics and AI-for-science. After a PhD developing novel x-ray free-electron laser operations in Shanghai and a physicist role at European XFEL, he now leads high-power attosecond XFEL research at DESY on a tenure-track appointment. He combines deep experimental expertise with software and backend development skills, contributing to the GCC RISC-V backend—evidence of his ability to tackle low-level performance and architecture challenges. Jiawei’s work sits at the intersection of cutting-edge photon science and computational methods, and he actively communicates his research through jwyan.com. Notably, his profile reflects both hands-on instrumentation experience and contributions to open-source toolchains that optimize emerging instruction-set extensions.
8 years of coding experience
Doctor of Philosophy - PhD, Doctor of Philosophy - PhD at University of Chinese Academy of SciencesBachelor's degree, Bachelor's degree at University of South China
Github Skills (10)
c1710
risc-v10
gcc-compiler10
c1110
assembler9
assembly9
compiler-optimization9
test-suite8
embedded8
sys8
Programming languages (13)
Github contributions (5)
gcc-mirror/gcc
May 2022 - May 2022
Role in this project:
Backend Developer
Backend DeveloperContributions:1 comment in 1 day
Contributions summary:Jiawei primarily contributes to the RISC-V architecture support within the GCC compiler. Their work includes modifying compiler configurations, adding new options, and fixing testsuite issues related to the RISC-V architecture. A significant portion of their commits involves supporting and optimizing for RISC-V instruction set extensions like Z*inx and ZC* extensions. They also made changes to address issues with code generation and register allocation, ensuring correct code generation for RISC-V targets.
ruyisdk/riscv-gcc
Jun 2023 - Jun 2026
multi version gcc support for RUYISDK
Contributions:2 reviews, 5 PRs, 37 pushes in 3 years
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