Jason Cohen has worked on performance analysis tools at NVIDIA since the days of CUDA 1.0. He is one of the authors of the NVTX instrumentation library, has added tools instrumentation to multiple drivers, and has worked on a variety of systems for automatic instrumentation of applications across many platforms. Jason has contributed to Nsight Systems, Nsight Compute, Nsight Visual Studio, CUPTI, and other performance-related tools. He enjoys working on developer tools where the daily challenges range from GUI polishing to assembly hot-patching, and where customers always ask the hard questions.