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Automatic code generation for GPUs in llc

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Abstract

llc is a C-based language where parallelism is expressed using compiler directives. In this paper, we present a new backend of an llc compiler that produces code for GPUs. We have also implemented a software architecture that eases the development of new backends. Our design represents an intermediate layer between a high-level parallel language and different hardware architectures.

We evaluate our development by comparing the OpenMP and llc parallelizations of three different algorithms. In every case, the probable performance loss with respect to a direct CUDA implementation is clearly compensated by a significantly smaller development effort.

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Authors and Affiliations

  1. Departamento de Estadística, I.O. y Computación, Universidad de La Laguna, Avda. Astrofísico F. Sánchez, s/n, 38271, La Laguna, Tenerife, Canary Islands, Spain

    Ruyman Reyes & Francisco de Sande

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  1. Ruyman Reyes
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  2. Francisco de Sande
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Correspondence to Francisco de Sande.

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Reyes, R., de Sande, F. Automatic code generation for GPUs in llc. J Supercomput 58, 349–356 (2011). https://doi.org/10.1007/s11227-011-0591-7

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  • DOI: https://doi.org/10.1007/s11227-011-0591-7

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