CC* Compute: Integrating Georgia Tech into the Open Science Grid for Multi-Messenger Astrophysics

利用所有可能的信息来源研究宇宙是多信使天体物理学的目标。利用LIGO进行的开创性引力波观测，利用IceCube进行的高能中微子观测，以及利用VERITAS进行的极高能伽马射线观测，使多信使天体物理学成为可能。这些和未来的仪器，如CTA，能够完整地观察宇宙中最激烈和最具活力的现象，例如黑洞和中子星的合并，或者大型星系中心超大质量黑洞附近的过程。 所有这些努力都是计算密集型的，无论是在数据分析还是在模拟中。开放科学网格（OSG）基础设施和服务是满足多信使天体物理学计算需求的理想平台。该项目获得网络基础设施资源，将格鲁吉亚技术连接到OSG，并将这些资源整合到前面提到的NSF资助设施的计算工作中。根据该奖项获得的高吞吐量计算集群包括12个计算节点，具有40核英特尔Skylakes，192 GB内存，以支持LIGO项目要求和其他要求。IceCube和LIGO支持4个GPU节点，每个节点配备16核Intel Skylakes和4个96GB内存的NVIDIA TeslaV100 GPU。一个特殊的OSG StashCache拥有432TB的存储空间，直接支持CTA等项目。该系统在格鲁吉亚技术数据中心以10 Gbps连接，该数据中心又以100 Gbps+连接到Southern Crossroads R E交换点。这个项目的资源作为催化剂，格鲁吉亚技术的长期整合到OSG，作为一个标准的服务提供给校园里的所有研究人员。该提案的一个重要组成部分是大量的图形处理单元，用于加速模拟。该项目使亚特兰大成为东南部第一家StashCache提供商，该服务使参与该国家电网的区域机构能够快速访问分布式OSG数据集。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

Studying the Universe with all possible sources of information is the objective of multi-messenger astrophysics. Groundbreaking gravitational wave observations with LIGO, high-energy neutrino observations with IceCube, and very high-energy gamma-ray observations with VERITAS enable multi-messenger astrophysics. These and future instruments like CTA enable a complete view of the most violent and energetic phenomena in the Universe, such as the merger of black holes and neutron stars or the processes near the supermassive black holes at the center of large galaxies. All these efforts are computationally intensive, both in data analysis and in simulations. The Open Science Grid (OSG) infrastructure and services are an ideal platform to meet the computational requirements of Multi-messenger Astrophysics. This project acquires cyber infrastructure resources to connect Georgia Tech to the OSG and integrate these resources into computational efforts of the previously-mentioned NSF funded facilities. The High Throughput Computing Cluster acquired under this award includes 12 compute nodes with 40-core Intel Skylakes with 192 GB memory to support LIGO project requirements and others. IceCube and LIGO are supported with 4 GPU nodes, each equipped with 16-core Intel Skylakes and 4 NVIDIA TeslaV100 GPUs with 96GB memory. A special OSG StashCache has 432TB of storage in direct support of projects such as CTA. The system is 10Gbps connected in the Georgia Tech data center which in turn has 100Gbps+ to Southern Crossroads R&E exchange point. This project's resources serve as a catalyst for Georgia Tech's long-term integration into the OSG, as a standard service offered to all researchers on campus. An important component of this proposal is a significant number of Graphical Processing Units, used to accelerate simulations. This project makes Atlanta the first StashCache provider in the Southeast, as a service that enables fast access to distributed OSG datasets by regional institutions that participate in this national grid.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.