Résumé - Ric (Ming) Li
date
Jul 6, 2023
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resume
status
Published
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Website
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I'm a system software engineer based in Shanghai with 4 years of experience in the software industry. My focus area for the past few years has been Media Transport Library development which is written in C/C++ based on DPDK, RDMA and XDP, but I'm also fund of coding with Rust.
Experience
System Software Engineer
Intel, Shanghai, China – (July 2020 - Present)
- Media Transport Library (2021 - Present)
- Implemented the SMPTE ST2110 standards.
- Utilize DPDK and XDP for ~100Gbps uncompressed video packet processing.
- Utilize RDMA (RoCEv2) for low-overhead inter-node lossless media data transport.
- Wrote ergonomic Rust bindings for the library.
- Developed RTCP protocol for packet retransmission, make the session recoverable from up to 10% packet loss.
- Optimized resource usage by leveraging DMA engine (DSA) for memory copy, saving 50% of CPU resources.
- Achieved up to 8x speed increase in YUV color format conversion through AVX512 optimization.
- Implemented control plane protocols (ARP, DHCP, IGMP) with DPDK.
- Improved PTP algorithm for enhanced accuracy within 50ns.
- Enabled KVM deployment for both Linux and Windows VM.
- Extended support for AWS EC2 instances using ENA interfaces.
- Created a DPDK-based ld_preload UDP stack to support QUIC and other protocols.
- Contributed to building an ecosystem with Intel MSDK, OBS Studio, and more.
- Android Cloud Gaming (2020 - 2021)
- Developed a virtual camera input for Android client, streamlining capture and encode processes.
- Profiled and optimized the cloud camera side latency.
- Orchestrated Kubernetes deployment, developed metrics exporter for Intel dGPU, and established a Prometheus monitoring system.
- Enabled Intel GPU device plugin for scalable Android container deployment.
Education
Master's Degree in Control Engineering
HUST, Wuhan, China – (September 2018 - June 2020)
Bachelor's Degree in Automation
HUST, Wuhan, China – (September 2014 - June 2018)
Skills
C
My foundational programming language, mastered over 5 years of hands-on experience. I'm adept in system programming, with extensive use on Linux and some on Windows.
DPDK
I have a solid two-year background in developing DPDK-based software and am adept with DPDK's intricacies on both Linux and Windows platforms.
eBPF/XDP
Actively expanding my knowledge in eBPF and the kernel networking stack.
RDMA
Familiar with the user space APIs, I have implemented some features based on RoCEv2 NIC.
K8S
I have practical experience with Kubernetes deployment and development, contributing to my understanding of container orchestration.
C++
My experience with system programming also extends to C++, utilized in both Linux and Windows systems.
Rust / Zig
I'm tackling the learning curve of Rust and Zig, embracing the challenges they bring. While I'm not yet an expert, I've independently developed some features and fixes.
Technical writing
I have a genuine passion for demystifying complex technical concepts through writing, aiming to simplify and clarify for the benefit of others.
Generative AI
I harness AI to boost productivity in tasks such as document and script writing (including this page🤗). My interest also lies in deploying AI services, including GPT for chat applications and VITS for text-to-speech synthesis.
Languages
Chinese 🇨🇳
Native speaker
English 🇺🇸
Proficient speaker
Spanish 🇪🇸
Learning in Duolingo
Publications
- DTTC 2022 Kahawai: A SMPTE ST 2110-Compliant Development Kit Based on IA Platform
- DTTC 2024 Leveraging XDP for Effcient and Cost-Effective Media Transport
- Patent: Method to present independent slice reconstruction of JPEG-XS based ST2110-22 stream
- Patent: Latency-sensitive RTP packet recovery method for the SMPTE ST2110 standard