activity
20172026
most citedFlash-X, a multiphysics simulation software instrument

37 citations · 37 across the 5 of their papers we have counts for

collaborators

5 papers

cs.DC2026

Every Microsecond Matters: Achieving Near Speed-of-Light Latency in GPU Collectives

Siyuan Shen, Anton Korzh, John Bachan +10

GPU collective communication is typically optimized for bandwidth, yet many emerging workloads are increasingly limited by latency. Long-context decode-heavy large language model (…

cs.DC2025

GPU-Initiated Networking for NCCL

Khaled Hamidouche, John Bachan, Pak Markthub +6

Modern AI workloads, especially Mixture-of-Experts (MoE) architectures, increasingly demand low-latency, fine-grained GPU-to-GPU communication with device-side control. Traditional…

physics.comp-ph2022★ 37 cited

Flash-X, a multiphysics simulation software instrument

Anshu Dubey, Klaus Weide, Jared O'Neal +28

Flash-X is a highly composable multiphysics software system that can be used to simulate physical phenomena in several scientific domains. It derives some of its solvers from FLASH…

math.NA2020

Adaptive Total Variation Stable Local Timestepping for Conservation Laws

Maximilian Bremer, John Bachan, Cy Chan +1

This paper proposes a first-order total variation diminishing (TVD) treatment for coarsening and refining of local timestep size in response to dynamic local variations in wave spe…

cs.CE2017

ExaGridPF: A Parallel Power Flow Solver for Transmission and Unbalanced Distribution Systems

Bin Wang, John Bachan, Cy Chan

This paper investigates parallelization strategies for solving power flow problems in both transmission and unbalanced, three-phase distribution systems by developing a scalable po…