Guodong Xu

About Me

Greetings! I'm Guodong Xu (徐国栋), also known online as docular / docularxu. I am a Linux kernel and platform software specialist, open-source enthusiast, with 20+ years of experience spanning embedded systems, BSP/device bring‑up, server software, performance/power optimization, and upstreaming to mainline communities.

I combine deep technical expertise with business execution: leading cross‑border teams, aligning with customer needs, and delivering open‑source based solutions. I've been invited to speak at openEuler, RISC‑V ecosystem conferences, and other industry forums.

Recent Works

Benchmark analyses and performance reports for RISC-V Vector Extension (RVV).

SLEEF (Nonlinear Math)

• SLEEF RVV Benchmark Summary (16 Oct 2025)
• GELU Kernel Benchmarks: erf/tanh on RVV (17 Oct 2025)

OpenBLAS (Linear Algebra)

• RISC-V GEMV Performance Summary (16 Oct 2025)
• OpenBLAS RVV Benchmark Summary (16 Oct 2025)

RISC-V Summit NA 2025

October 23, 2025

Moving to RISC-V Vector: A Practical Journey of AI Operator Optimization

Conference talk on practical AI operator optimization using RISC-V Vector Extension, presented at RISC-V Summit North America.

🎥 YouTube

📄 PDF

📊 PPTX

Blog Posts & Publications

Sharing insights and experiences from the RISC-V ecosystem and open source community.

RISC-V International Blog

July 24, 2025

RISC-V Summit China 2025: Reflections from a RISC-V Software Contributor

Insights and observations from attending the 5th RISC-V Summit China, sharing perspectives on ecosystem development and community growth.

📢 Republished by CRVA (China RISC-V Alliance)

RISCstar Solutions Blog

April 14, 2025

RISC-V Linux Kernel Upstreaming: Insights from the 2025 China RISC-V Ecosystem Conference

Key insights on the current state of RISC-V Linux kernel upstreaming and challenges faced by the community.

🔧 Linux Kernel • RISC-V

Linux Kernel Upstreaming

With over 20 years of experience in Linux kernel development, I have consistently contributed to mainline upstream work throughout my career. During my tenure at Linaro, I led upstream efforts for various client platforms. Now at RISCstar, Linux kernel upstream contributions remain a core part of my work and my ongoing commitment to the open source community.

StarFive JH7110 SoC Support

• Add DeepComputing FML13V01 board dts (28 Oct 2024, merged into v6.12)

SpacemiT K1 SoC Support

• PDMA: Working DMA driver for SpacemiT K1 (22 Aug 2025, merged into v6.18)
• PWM: PWM support for SpacemiT K1 SoC (7 Jul 2025, merged into v6.17)

Computing Acceleration Contributions

I have extensive experience accelerating computing libraries using vector instructions (including Arm SVE/SME and RISC-V Vector Extension). The contributions listed here represent only my open source work; significant additional contributions to commercial software libraries are not shown.

BLIS (BLAS-like Library Instantiation Software)

Added two kernels (dgemm and dpackm) that employ ARM SVE vector extensions, released in BLIS 0.8.0 on November 19, 2020.

• BLIS 0.8.0 Release Notes - ARM SVE kernels contribution

ISA-L (Intel Intelligent Storage Acceleration Library)

Enabled SVE (Scalable Vector Extension) support in ISA-L erasure code for aarch64 architecture.

• Enable SVE in ISA-L erasure code for aarch64 (28 Dec 2021)

Education & Experience

Current

Director of China Operations, RISCstar — 2024.09 – Present (Beijing/Remote)
RISCstar provides low‑level software solutions for Arm and RISC‑V. I drive China operations across BD/Sales and technical delivery: brand building, opportunity discovery, contract management, technical scoping/effort estimates, coordinating global teams, and directly contributing to Linux kernel upstream work for domestic RISC‑V chips. Secured multiple contracts, including the company’s first global deal; delivered talks at openEuler, RISC-V Summit and RVEI events.

Previously

Education

• M.S., Computer Science — Beijing University of Posts and Telecommunications (1999–2002)
• B.S., Computer Science — Qingdao University (1995–1999)

Selected Skills

Contact

Beijing, China
docularxu@msn.com · (+86) 138‑1154‑8651
LinkedIn: linkedin.com/in/docularxu

Badges & Certifications

Quantization Fundamentals

Hugging Face

DeepLearning.AI

June 11, 2024

Conference Speaking Engagements

English

• 16 May 2022, openEuler + Linaro Developer Day, Talk: "Accelerating High-Performance Computing with Arm SVE Vector Instructions"
• 19 Aug 2023, ApacheCon 2023, Talk: "Optimizing HDFS Performance: Balanced Utilization of Hardware Accelerators and ARM64 Multi-core Capabilities on KUNPENG920"
  Topics: HDFS, Big Data, MD5, Multi-buffer, UADK Acceleration, OPENSSL
• 10 Apr 2024, FOSSASIA Summit 2024, Ha Noi, Talk: "Optimizing Workloads with Arm64 & Hardware Accelerators"
  Topics: HBase/HDFS Transparent Encryption, AES/SM4, OpenSSL 3.0
• 5 Jul 2024, openEuler Big Data Meetup, Talk: "Advantages and Challenges of Using UADK Acceleration in Big Data"
• 18 Dec 2024, Shanghai Zhangjiang, CIX Technology 2024 Ecosystem Conference, Panel Discussion with ecosystem leaders from Red Hat, Ubuntu, Deepin, Kylin, and openEuler: "Embracing Community, Open and Win-Win"
• 28 Dec 2024, RISC-V Industry Development Conference 2024, Talk: "Crossing the Chasm: Ecosystem Transition and Challenges from Arm to RISC-V"
• 28 Feb 2025, 2025 China RISC-V Ecosystem Conference, Talk: "Current Status of RISC-V Linux Kernel Open Source Upstream"
• 22 Mar 2025, openEuler on RISC-V & deepin Meetup-Beijing, Lightning Talk: "Understanding RISC-V Ecosystem Development Stages and Construction Path from the Perspective of Arm Ecosystem Development"
• 16 Jul 2025, The 5th RISC-V Summit China, Shanghai, Poster: "RISC-V Linux Kernel / Boot Firmware 2025 Progress Report: Challenges from Upstream and Downstream"
• 23 Oct 2025, RISC-V Summit 2025 NA, Talk: "Moving to RISC-V Vector: A Practical Journey of AI Operator Optimization"
• 25 Nov 2025, RISC-V Industry Development Conference and RDSA International Summit, Zhuhai/Macao, Talk: "Porting Code to RISC-V: Course Development practices accelerating the RISC-V developer ecosystem"

中文

• 16 May 2022，openEuler + Linaro Developer Day，演讲《利用 Arm SVE 向量指令加速高性能计算》
• 19 Aug 2023，ApacheCon 2023，《优化HDFS性能:在KUNPENG920上实现硬件加速器和ARM64多核能力的均衡利用》
  主要内容：HDFS，大数据，MD5，Multi-buffer，UADK 加速，OPENSSL
• 10 Apr 2024，FOSSASIA Summit 2024，Ha Noi，演讲《Optimizing Workloads with Arm64 & Hardware Accelerators》
  主要内容：HBase/HDFS Transparent Encryption，AES/SM4，OpenSSL 3.0
• 5 Jul 2024，openEuler 大数据 Meetup，演讲《大数据领域使用 UADK 加速的优势和挑战》
• 18 Dec 2024，上海张江，此芯科技2024生态大会，圆桌论坛：与来自 红帽 / Ubuntu / 统信 Deepin / 麒麟 openEuler 的生态负责人共话《拥抱社区，开放共赢》
• 28 Dec 2024，RISC-V 产业发展大会 2024，演讲《跨越鸿沟：从Arm到RISC-V的生态转型与挑战》
• 28 Feb 2025，2025 中国 RISC-V 生态大会，演讲《RISC-V Linux内核开源upstream现状》
• 22 Mar 2025，openEuler on RISC-V & deepin Meetup-北京站，闪电演讲《从 Arm 生态的发展看 RISC-V 生态的发展阶段和构建之路》
• 16 Jul 2025，第五届RISC-V中国峰会，The 5th RISC-V Summit China, 上海。Posters，《RISC-V Linux 内核/启动固件2025进展报告 - 从上游支持到生产级部署的实践与挑战》
• 23 Oct 2025，RISC-V Summit 2025 NA，"Moving to RISC-V Vector: A Practical Journey of AI Operator Optimization - Guodong Xu, RISCstar Solutions"
• 25 Nov 2025，RISC-V产业发展大会暨RDSA国际论坛，人才分论坛，珠海/澳门，演讲《〈Porting Code to RISC-V〉：加速 RISC-V 开发者生态的课程实践》

Other Videos & References

Additional talks, interviews, and resources.