Publication Type
Conference Paper
Journal Name
EPJ Web of Conferences
Publication Date
Page Number
03030
Volume
251
Issue
1
Conference Name
25th International Conference on Computing in High-Energy and Nuclear Physics
Conference Location
Oak Ridge, Tennessee, United States of America
Conference Sponsor
CERN
Conference Date
Abstract
Celeritas is a new computational transport code designed for high-performance simulation of high-energy physics detectors. This work describes some of its current capabilities and the design choices that enable the rapid development of efficient on-device physics. The abstractions that underpin the code design facilitate low-level performance tweaks that require no changes to the higher-level physics code. We evaluate a set of independent changes that together yield an almost 40% speedup over the original GPU code for a net performance increase of 220× for a single GPU over a single CPU running 8.4M tracks on a small demonstration physics app.
