17th International Parallel Tools Workshop, Dresden

Session

Session 2

Oct 1, 2026, 1:15 PM

APB Andreas-Pfitzmann-Bau, E023 (01187 Dresden)

238. End-to-End Testing the CODA Flow Solver on HPC Systems with ReFrame

10/1/26, 1:15 PM

Abstract

CODA is a flow solver jointly developed and used by DLR, Airbus and ONERA that must be validated continuously on very
different HPC systems. It is embedded into the FlowSimulator ecosystem, which serves as a backbone for multidisciplinary
analyses and optimizations on HPC architectures. Verifying full CFD simulations manually is tedious, slow and
error-prone, and numerical or performance...

231. Extended Visualization and Analysis of Non-Blocking Multi-Threaded Communication of a Large-Scale CFD Solver with Vampir

10/1/26, 1:30 PM

Abstract

This work introduces an expanded event model in Vampir for analyzing non-blocking MPI communication.
This model addresses the challenges of unsuccessful tests and attributing wait time to root-cause functions in application code.
These extended message events allow Vampir to visualize temporal and spatial high-frequent test-phases and wait-time distributions, supporting outlier detection and...

237. Combining PyTorch Instrumentation APIs with Existing HPC Analysis Tools

10/1/26, 2:00 PM

Abstract

In the rise of machine learning, PyTorch has become a commonly used library to abstract high performance and accelerated compute kernels as accessible Python functions. Workloads using PyTorch, e.g. for LLM training or inference, are becoming prevalent consumers of HPC resources, prompting a closer look into their exact behaviours and computational efficiencies. Tracing and profiling provide...