About Me

Hello, I’m Tianchu Ji (冀天初), a computer engineer focusing on computer architecture for AI workload.

Being a kernel developer at Annapurna Labs, Amazon, I currently focus on performance evaluation and optimization for AI accelerators.

I received my doctorate degreen in Computer Engineering from the Stony Brook University in 2026. During my Ph.D. studying, I had been focusing on exploring the sparsity of the Multihead-Attention-based Deep Learning models and building high efficient SpMM hardware to accelerate the computation on GEMM-optimized hardware. I had also been working on hardware accelerators for LSTM models, and had helped build Medusa (our Scalable memory interconnect for many-port DNN accelerators) and a High Resolution Time-to-Digital Converter on FPGA.

I live in Sunnyvale, CA with my cat, Avery. When I’m free, I write blogs and short stories in Chinese here.