تقرير
Bringing heterogeneity to the CMS software framework
| العنوان: | Bringing heterogeneity to the CMS software framework |
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| المؤلفون: | Bocci, Andrea, Dagenhart, David, Innocente, Vincenzo, Jones, Christopher, Kortelainen, Matti, Pantaleo, Felice, Rovere, Marco |
| المصدر: | EPJ Web of Conferences 245, 05009 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | High Energy Physics - Experiment Physics (Other) |
| مصطلحات موضوعية: | Physics - Computational Physics, High Energy Physics - Experiment |
| الوصف: | The advent of computing resources with co-processors, for example Graphics Processing Units (GPU) or Field-Programmable Gate Arrays (FPGA), for use cases like the CMS High-Level Trigger (HLT) or data processing at leadership-class supercomputers imposes challenges for the current data processing frameworks. These challenges include developing a model for algorithms to offload their computations on the co-processors as well as keeping the traditional CPU busy doing other work. The CMS data processing framework, CMSSW, implements multithreading using the Intel Threading Building Blocks (TBB) library, that utilizes tasks as concurrent units of work. In this paper we will discuss a generic mechanism to interact effectively with non-CPU resources that has been implemented in CMSSW. In addition, configuring such a heterogeneous system is challenging. In CMSSW an application is configured with a configuration file written in the Python language. The algorithm types are part of the configuration. The challenge therefore is to unify the CPU and co-processor settings while allowing their implementations to be separate. We will explain how we solved these challenges while minimizing the necessary changes to the CMSSW framework. We will also discuss on a concrete example how algorithms would offload work to NVIDIA GPUs using directly the CUDA API. Comment: Submitted to proceedings of the 24th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2019) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/epjconf/202024505009 |
| URL الوصول: | http://arxiv.org/abs/2004.04334 |
| رقم الأكسشن: | edsarx.2004.04334 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/epjconf/202024505009 |
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