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Exit CTA Conscious Warp Scheduling
Viet Tan Vo,Xuan Thien Cao,Jinsul Kim 한국디지털콘텐츠학회 2021 The Journal of Contents Computing Vol.3 No.1
Modern GPU architecture achieves a significant performance improvement over several previous GPU generations. Unfortunately, hardware resources upgrade is still underutilized. This paper targets this problem by reducing the warp waiting time when they approach the exit point at the end of CTA. Our proposed exit CTA conscious warp scheduler prioritizes warps in CTA (Cooperative Thread Arrays) which has the largest number of warps waiting at the exit point. The experiments prove that our implementation can improve the performance by 8.4% on average over the performance of baseline warp scheduler.