Fine-grained low-overhead fault-tolerant system for GPGPU

Abstract

The invention provides a fine-grained low-overhead fault-tolerant system for a GPGPU. The fine-grained low-overhead fault-tolerant system comprises a task division module, a check point backup module,a redundancy execution and error detection module and an error repair module. The fault-tolerant processing of the instantaneous fault of the GPU computing component can be realized, and the problemsof large fault-tolerant granularity, high error repair cost, poor fault-tolerant system performance and the like in the traditional software fault-tolerant method of the GPU can be solved. The beneficial effects of the invention are as follows: thread tasks can be divided; the calculation scale of the kernel is reduced, only the relative active variables need to be backed up during check point backup, the space-time expenditure caused by storage is reduced, only part of objects related to errors need to be recalculated during error repair, the fault-tolerant cost caused by recalculation is reduced, and the asynchronous mechanism of the CPU-GPU heterogeneous system is fully utilized to hide the time delay caused by data transmission and improve the performance of the system.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a GPGPU-oriented fine-grained and low-overhead fault-tolerant system. Background technique [0002] In recent years, general-purpose graphics processor units (GPGPUs) have become increasingly popular due to their superior computing power, memory access bandwidth, and improved programmability. Heterogeneous parallel computers that leverage the computing power of GPUs for high-performance computing have been favored by researchers in the vast majority of scientific fields, including financial analysis, earthquake detection, high-energy physics, quantum chemistry, molecular dynamics, and even drug design. [0003] Since the GPU is initially mainly used in the field of graphics and image processing, and the application in this field itself has a certain degree of fault tolerance, the error of the calculation result of a single pixel does not affect the display effect of the entire ...

AI Technical Summary

Problems solved by technology

However, the software fault tolerance method of GPU is still in its infancy, and there are problems such as large fault tolerance granularity, high cost of error repair, poor performance of fault tolerance system, and difficulty in implementing fault tolerance.

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