Multiprocessor systems-on-chip (MPSoC) are evolving into heterogeneous architectures based on one host processor plus many-core accelerators. While heterogeneous SoCs promise higher performance/watt, they are programmed at the cost of major code rewrites with low-level programming abstractions (e.g, OpenCL). We present a programming model based on OpenMP, with additional directives to program the accelerator from a single host program. As a test case, we evaluate an implementation of this programming model for the STMicroelectronics STHORM development board. We obtain near-ideal throughput for most benchmarks, very close performance to hand-optimized OpenCL codes at a significantly lower programming complexity, and up to 30× speedup versus host execution time.

Marongiu, A., Capotondi, A., Tagliavini, G., Benini, L. (2015). Simplifying Many-Core-Based Heterogeneous SoC Programming with Offload Directives. IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, 11(4), 957-967 [10.1109/TII.2015.2449994].

Simplifying Many-Core-Based Heterogeneous SoC Programming with Offload Directives

MARONGIU, ANDREA;CAPOTONDI, ALESSANDRO;TAGLIAVINI, GIUSEPPE;BENINI, LUCA
2015

Abstract

Multiprocessor systems-on-chip (MPSoC) are evolving into heterogeneous architectures based on one host processor plus many-core accelerators. While heterogeneous SoCs promise higher performance/watt, they are programmed at the cost of major code rewrites with low-level programming abstractions (e.g, OpenCL). We present a programming model based on OpenMP, with additional directives to program the accelerator from a single host program. As a test case, we evaluate an implementation of this programming model for the STMicroelectronics STHORM development board. We obtain near-ideal throughput for most benchmarks, very close performance to hand-optimized OpenCL codes at a significantly lower programming complexity, and up to 30× speedup versus host execution time.
2015
Marongiu, A., Capotondi, A., Tagliavini, G., Benini, L. (2015). Simplifying Many-Core-Based Heterogeneous SoC Programming with Offload Directives. IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, 11(4), 957-967 [10.1109/TII.2015.2449994].
Marongiu, Andrea; Capotondi, Alessandro; Tagliavini, Giuseppe; Benini, Luca
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/517281
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