Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 66: Grid-Computing

T 66.2: Talk

Tuesday, March 28, 2017, 17:05–17:20, JUR 372

ATLAS simulation on ARM-64 bit servers; porting, validation and benchmarks — Gen Kawamura, Arnulf Quadt, and •Joshua Wyatt Smith — II. Physikalisches Institut, Georg-August-Universität Göttingen

The ATLAS experiment explores new hardware and software platforms that, in the future, may be more suited to its intensive workloads. An example is simulation; a CPU intensive workload that would profit drastically if it was more “portable” and therefore usable on a wider variety of platforms. We will present the latest results of the port of the ATLAS software stack onto new prototype ARM 64-bit servers. Patches were needed to introduce this new architecture into the build as well as correct for platform specific code that caused failures on non-x86 architectures. We will show selected results from the validation of the physics outputs on these ARM 64-bit servers. CPU, memory and IO intensive benchmarks using ATLAS specific environment and infrastructure have been performed, with a particular emphasis on the performance vs. energy consumption. From our results it is clear that the prototype ARM 64-bit server outperforms the standard Intel server in terms of Events/KWh.