Jim Dinan

Jim Dinan is a principal engineer at NVIDIA and leads the HPC communication software efforts. Jim was a James Wallace Givens postdoctoral fellow at Argonne National Laboratory and earned a Ph.D. in computer science from Ohio State University. He has spent nearly a decade serving on open standards committees for parallel programming models, including MPI and OpenSHMEM.

Posts by Jim Dinan

Technical Walkthrough 2 Nov 22, 2022

Improving Network Performance of HPC Systems Using NVIDIA Magnum IO NVSHMEM and GPUDirect Async

Today’s leading-edge high performance computing (HPC) systems contain tens of thousands of GPUs. In NVIDIA systems, GPUs are connected on nodes through the... 14 MIN READ
Technical Walkthrough 1 Jan 22, 2021

Accelerating NVSHMEM 2.0 Team-Based Collectives Using NCCL

NVSHMEM 2.0 is introducing a new API for performing collective operations based on the Team Management feature of the OpenSHMEM 1.5 specification. A team is a... 9 MIN READ
Technical Walkthrough 1 Aug 25, 2020

Scaling Scientific Computing with NVSHMEM

Figure 1. In the NVSHMEM memory model, each process (PE) has private memory, as well as symmetric memory that forms a partition of the partitioned global... 10 MIN READ