计算机科学 ›› 2021, Vol. 48 ›› Issue (12): 36-42.doi: 10.11896/jsjkx.201200023
谢景明1, 胡伟方1, 韩林2, 赵荣彩2, 荆丽娜3
XIE Jing-ming1, HU Wei-fang1, HAN Lin2, ZHAO Rong-cai2, JING Li-na3
摘要： “嵩山”超级计算机系统是中国自主研发的新一代异构超级计算机集群,其搭载的CPU和DCU加速器均为我国自主研发。为扩充该平台的科学计算生态,验证量子计算研究在该平台上开展的可行性,文中使用异构编程模型实现了量子傅里叶变换模拟在“嵩山”超级计算机系统上的异构版本,将程序的计算热点部分分配至DCU上运行;然后使用MPI在单计算节点上开启多进程,实现DCU加速器数据传输和计算的并发;最后,通过计算与通信的隐藏避免了DCU在数据传输时处于较长时间的空闲状态。实验首次在超算系统上实现了44 Qubits规模的量子傅里叶变换模拟,结果显示,异构版本的量子傅里叶变换模拟充分利用了DCU加速器计算资源,相较于传统CPU版本,其取得了11.594的加速比,且在集群上具有良好的可拓展性,该方法为其他量子算法在“嵩山”超级计算机系统上的模拟实现以及优化提供了参考。
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