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arXiv · 2302.04225

Feature-based SpMV Performance Analysis on Contemporary Devices

Panagiotis Mpakos·Dimitrios Galanopoulos·Petros Anastasiadis·Nikela Papadopoulou·Nectarios Koziris·Georgios Goumas
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Abstract

The SpMV kernel is characterized by high performance variation per input matrix and computing platform. While GPUs were considered State-of-the-Art for SpMV, with the emergence of advanced multicore CPUs and low-power FPGA accelerators, we need to revisit its performance and energy efficiency. This paper provides a high-level SpMV performance analysis based on structural features of matrices related to common bottlenecks of memory-bandwidth intensity, low ILP, load imbalance and memory latency overheads. Towards this, we create a wide artificial matrix dataset that spans these features and study the performance of different storage formats in nine modern HPC platforms; five CPUs, three GPUs and an FPGA. After validating our proposed methodology using real-world matrices, we analyze our extensive experimental results and draw key insights on the competitiveness of different target architectures for SpMV and the impact of each feature/bottleneck on its performance.

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Panagiotis Mpakos, Dimitrios Galanopoulos, Petros Anastasiadis, Nikela Papadopoulou, Nectarios Koziris, Georgios Goumas. 2023-02-08. Feature-based SpMV Performance Analysis on Contemporary Devices. https://arxiv.org/abs/2302.04225

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