Efficient GPGPU Computing with Cross-Core Resource Sharing and Core Reconfiguration

Dhar, Ashutosh Sutra; Chen, Deming

doi:10.1109/fccm.2017.59

Cited by 2 publications

(1 citation statement)

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“…Other works [8][9][10] targeted data-path units, such as the register file, and some internal components of the execution units (EUs) [11]. Similarly, some works proposed reconfiguration solutions targeting computational blocks in GPGPUs [12] or other modules in the GPGPU, such as the memories [13], and functional units [14], or combinations of both aligning the system to the specific workload requirements [2,15]. In [16], the author proposes selective hardware redundancy to correct defective blocks during the production stage.…”

Section: Introductionmentioning

confidence: 99%

A dynamic reconfiguration mechanism to increase the reliability of GPGPUs

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et al. 2020

2020 IEEE 38th VLSI Test Symposium (VTS)

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1 -General Purpose Graphic Processing Units (GPGPUs) are effective solutions for high-demanding data processing applications. Recently, they started to be used even in safety-critical applications, such as autonomous car driving systems. GPGPUs are implemented using the latest semiconductor technologies, which are more prone to faults arising during the lifetime operation. However, until now fault mitigation solutions were not extensively included in GPGPUs, due to the limited reliability requirements of the applications they were originally intended for (e.g., gaming or multimedia). This work proposes a dynamically configurable selfrepairing mechanism aimed at mitigating the impact of permanent faults in the Scalar Processor (SP) cores in GPGPUs. The mechanism is based on spare modules that can be used to replace faulty SPs when a fault is detected. A configuration instruction allows dynamically controlling in software the selection of the set of active SPs in the SM. The method is extremely flexible since it does not require any change in the application software. Experimental results show that the solution introduces a moderate area overhead while allowing continue working even in the case of any permanent faults affecting the SPs.

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