Yun (Michael) Wang Email & Phone Number

中国 上海市

► OS & Kernel TL, deliver private Linux kernel and it's management/diagnose platform, fulfill business requirements on functionality and stability;► LLM infrastructure support, deliver private NCCL and it's management/diagnose platform, solve training issues and dig optimization points;► Colocation support, mixing different workload on same machine to optimize resource utilization, based on the customised k8s and kernel;► GPU kernel isolation R&D, design and develop functionality to support GPU resource isolation, based on the opensource Nvidia driver;

杭州

► Colocation Project Kernel TL, design & apply the solution to colocate Best-Effort workloads along with Latency-Sensitive ones, to optimize the usage of CPU resources;► NUMA Enablement Project Kernel TL, design & apply the solution to enable and take advantage of NUMA platform;► CPU Share Reform Project Kernel TL, find the performance issue of using CPU Share with K8S & containers, design & apply the solution to optimize performance;► Alibaba Cloud OS Team Kernel Scheduler TL;

Berlin Area, Germany

► Participate NST project as linux kernel representative► Support the AS team on linux kernel problems► Maintain private linux kernel tree for iaas cloud, including modified md, dm and Infiniband modules► Guide kernel developers on how to commit patches and work with opensource community, deliver the 'Linux Kernel Commit Guidelines'​ as the company's standard► Work with community on Infiniband development, pushed the IB management helpers into mainline which is the fundamental mechanism to acquire HW capability for Infiniband core layer► Test the modified kernel (md, dm, srp, srpt with Infiniband fabric) regarding to the performance and functionality, also fixing any bug/issue/regression founded or reported by other teams► Porting Infiniband project MLNX-OFED and SCST into our kernel

► Performance analyst (R&D) on virtualization for Power and Z platform, focus on linux kernel;► Work on the issue that while VM running transaction workload, cpu-cgroup shares doesn't works;► Work on the performance improvement for database;Successfully pushed scheduler feature ‘smart wake-affine’ into Linux mainline;By which pgbench show 40% improvement, and netperf show 5% improvement;► Help solving BUG in both upstream kernel and release distro;► Work with global Linux community as a kernel developer;► Work with IBM US and Brazil team on VPL (Volume Power Linux) project;► Work with IBM US team on LLT (Low Latency Tool) project as China team leader.► Owned Fair Gang Scheduling project in China, design, develop and test the patch set;Which help to solve the spinlock bouncing issue and improve the virtual machine performance by 10+%;► Provide several presentations on Linux kernel;

► Focus on the PC software of 3G USB modem.► Develop UI modules with Qt, including Phone Book, Remote Update, Engineer Mode and so on.► Redesign and develop the data transfer approach for drivers on Linux and Mac.► Design and develop a multi-threads IO operation tool on Linux for testing.► Review and test the code of drivers on Mac, for both USB and CDROM.► Debug the UI software, dynamic library and driver.

► Provide test report for national 3C certification as an electrical equipment test engineer.► Lead the team of 5 engineers, manage new lab site.