云南大学天文学超算系统YUNAS（Yunnan UNiversity Astronomy Supercomputer，简称天文超算），包含36台常规计算节点和4台GPU计算节点，共配备了960颗CPU计算核心、8块NVIDIA Tesla P100 GPU卡、100Gb/s的InfiniBand高速计算通讯网络，以及由14TB使用空间的高速固态硬盘组成的共享存储系统。其中，每台计算节点配备24个CPU计算核心和128GB内存，每个GPU计算节点增配了2块GPU卡。超算系统峰值计算能力为117.463万亿次（TFLOPS），峰值功率16千瓦。

The Yunnan UNiversity Astronomy Supercomputer (YUNAS) consists of 36 regular computing nodes and 4 GPU computing nodes, equipped with 960 CPU cores, 8 NVIDIA Tesla P100 GPU cards, 100Gb/s InfiniBand high-speed computing communication network and a shared storage system consisting of 14 TB of high-speed SSDs. Each computing node is equipped with 24 CPU cores and 128 GB of memory, and each GPU computing node is equipped with 2 GPU cards. The peak computing power of the supercomputing system is 117.463 trillion times per second (TFLOPS) with a peak power of 16 kilowatts.

高性能计算在现代天文学研究中发挥着越来越重要的作用。云南大学天文学超算系统于2019年3月投入使用以来，主要开展了下列天体物理前沿研究：通过流体和磁流体数值模拟研究太阳活动、超新星爆发遗迹、黑洞吸积盘和喷流，通过N体宇宙学数值模拟研究宇宙大尺度结构成因，以及通过PIC等离子体动力学模拟研究高能宇宙射线的加速机制。

High-performance computing plays an increasingly important role in modern astronomy research. Since its launch in March 2019, YUNAS has carried out the following cutting-edge research in astrophysics: studying solar activities, supernova remnants, black hole accretion disks/jets via fluid or magnetohydrodynamic simulations, studying the large-scale structures of the universe via N-body numerical simulations, and studying the acceleration mechanism of high-energy cosmic rays via PIC kinetic plasma simulations.

如需申请账号使用YUNAS计算资源，请填写附件1《云南大学天文学超算账户申请表》，纸质版签字后交到呈贡校区天文楼2316室，学生申请账号时还需要指导老师签字同意。

If you need to apply for an account to use YUNAS, please fill in "Yunnan University Astronomy Supercomputer Account Application Form", and sent a paper version with your signature to Room 2316, Astronomy Building, Yunnan University (Chenggong Campus). A student needs his/her supervisor’s signature for consent on the application form.

使用天文超算计算的结果发表论文时，请论文中致谢天文超算。英文致谢: The numerical computations were conducted on the Yunnan University Astronomy Supercomputer. 中文致谢：本文所需的计算资源由云南大学天文学超算系统提供。

When publishing a paper with the numerical results computed on YUNAS, please acknowledge YUNAS as: The numerical computations were conducted on the Yunnan University Astronomy Supercomputer.

发表文章：

1. Liu, Xiangkun; Liu, Dezi; Gao, Zucheng et al., "Detection of Cosmic Magnification via Galaxy Shear -- Galaxy Number Density Correlation from HSC Survey Data", 2021, arXiv: 2104.13595, Physical Review D, accepted

2. Fang, Jun; Yan, Jingwen; Wen, Lu; Lu, Chunyan; Yu, Huan, “Numerically investigating the morphology of the supernova remnant SN 1006 in the ambient medium with a density discontinuity”, 2020, MNRAS, 491, 2460

3. Yan, Jing-Wen; Lu, Chun-Yan; Wen, Lu; Yu, Huan; Fang, Jun, “Investigating the morphology of the supernova remnant G349.7+00.2 in the medium with a density gradient”, 2020, RAA, 20, 154

4. Fang, Jun; Lu, Chun-Yan; Yan, Jing-Wen; Yu, Huan, “Early acceleration of electrons and protons at the nonrelativistic quasiparallel shocks with different obliquity angles”, 2019, RAA, 19, 182

附件1:  云南大学天文学超算账户申请表.docx