Parallel Computing

GPA: A GPU Performance Advisor Based on Instruction Sampling

Presented our CGO'21 work.

Tools for Top-down Performance Analysis of GPU-Accelerated Applications

Presented our ICS'20 work.


Our tool provides a profile view and a trace view for GPU-accelerated applications. The profile view identifies where GPU APIs are invoked in CPU calling context, approximates calling context for GPU execution, and analyzes instruction mix for GPU kernels. The tool traces CPU and GPU activities for a large number of processes and threads with minimal overhead.


A fast, memory efficient, and light-weight implementation for gSpan algorithm in data mining. gBolt is up to 100x faster than the original implementation with multi-threading on a single machine. gBolt also reduces more than 200 folds memory usage, running efficiently on personal computers.