Interoperable GPU Kernels as Latency Improver for MEC
Center for Ubiquitous Computing, University of Oulu
arXiv:2001.09352 [cs.DC], (25 Jan 2020)
@misc{haavisto2020interoperable,
title={Interoperable GPU Kernels as Latency Improver for MEC},
author={Juuso Haavisto and Jukka Riekki},
year={2020},
eprint={2001.09352},
archivePrefix={arXiv},
primaryClass={cs.DC}
}
Mixed reality (MR) applications are expected to become common when 5G goes mainstream. However, the latency requirements are challenging to meet due to the resources required by video-based remoting of graphics, that is, decoding video codecs. We propose an approach towards tackling this challenge: a client-server implementation for transacting intermediate representation (IR) between a mobile UE and a MEC server instead of video codecs and this way avoiding video decoding. We demonstrate the ability to address latency bottlenecks on edge computing workloads that transact graphics. We select SPIR-V compatible GPU kernels as the intermediate representation. Our approach requires know-how in GPU architecture and GPU domain-specific languages (DSLs), but compared to video-based edge graphics, it decreases UE device delay by sevenfold. Further, we find that due to low cold-start times on both UEs and MEC servers, application migration can happen in milliseconds. We imply that graphics-based location-aware applications, such as MR, can benefit from this kind of approach.
February 2, 2020 by hgpu
