Supporting Texas researchers with a balanced set of resources to support simulation, data analysis, visualization, and machine learning

Lonestar6 is the newest system in TACC's Lonestar series of high performance computing systems that are deployed specifically to support Texas researchers. Lonestar6 is funded through the University of Texas Research Cyberinfrastructure, a collaboration between TACC and the University of Texas System, and is supported by partners at Texas A&M University, Texas Tech University, and the University of North Texas, as well as a number of research centers and faculty at UT-Austin, including the Oden Institute for Computational Engineering & Sciences and the Center for Space Research. Lonestar6 is available to researchers at all of these institutions.

System Specifications

Lonestar6 is composed of 560 compute nodes and 16 GPU nodes. The system employs Dell Servers with AMD's EPYC Milan processor, Mellanox's HDR Infiniband technology, and 8 PB of BeeGFS based storage on Dell storage hardware. Additionally, Lonestar6 supports GPU nodes utilizing NVIDIA's Ampere A100 GPUs to support machine learning workflows and other GPU-enabled applications.

The compute nodes are housed in four dielectric liquid coolant cabinets and 10 air-cooled racks. The air cooled racks also contain the 16 GPU nodes. Each compute node has two AMD EPYC 7763 64-core processors (Milan) and 256 GB of DDR4 memory. Each GPU node also contains two AMD EPYC processes and two NVIDIA A100 GPUs each with 40 GB of high bandwidth memory (HBM2).

Dielectric Liquid Cooled Compute

Processors 2x AMD EPYC 7763
Cores/Node 128 (64 per socket)
Clock Rate 2.45Ghz (Base Frequency)
Peak Node Performance 5TF
Memory/Node 256GB DDR-4
Local Disk 144GB/tmp partition on 288GB SSD
Network Mellanox Infiniband, HDR-100
Storage Mellanox Infiniband, HDR-100

Air Cooled GPU Racks

Processors 2x AMD EPYC 7763
Cores/Node 128 (64 per socket)
Clock Rate 2.45Ghz (Base Frequency)
Peak Node Performance 4.8TF, Double Precision
GPU 2x NVIDIA A100 GPUs with with 40GB HBM2

User Guide

Access full documentation on system architecture, software, new & advanced user information, best practices, and troubleshooting.

Lonestar6 User Guide