Julien is a Senior Manager in the GPU Architecture group at NVIDIA. He is one of the co-authors of many of the low level implementations for Deep Learning in cuDNN and TensorRT. Among other things, Julien wrote the first version of FFT-based 2D convolutions for cuDNN, he wrote a large fraction of the Implicit GEMM convolutions for Maxwell, Pascal and Volta GPUs, and he is the author of several Winograd implementations. Julien holds a Ph.D. in Computational Geometry from INRIA in France.