Current
| Cluster | Processor | Nodes | Cores | Per- Node RAM | DWF Performance (GFlops/node) | asqtad Performance (GFlops/node) | In Service |
| LQ1 | Dual 20-core 2.5GHz Intel Xeon CPUs | 179 | 7,160 | 196GB | 370.0 | 280.0 | 2020-present |
| LQ2 | Quad NVIDIA A100-80 GPUs and Dual 32-core 2.8GHz AMD CPUs | 18 | CPU:1,152 GPU:72 | 1 TB | 4524.5* | 1357.0* | 2023-present |
The table above shows the measured performance of DWF and asqtad inverters on the Fermilab LQCD clusters.
| LQ1: 179-node cluster with dual-socket 20-core Intel 6248 “Cascade Lake” (2.5 GHz) processors and an EDR Omni-Path fabric; 196 GB RAM |  |
| LQ2: 18-node cluster with quad NVIDIA A100 GPUs with 80 GB of HBM2e memory; NVLink point-to-point mesh interconnecting GPUs; dual InfiniBand interfaces with 200 Gbps aggregate bandwidth; dual 3rd generation AMD EPYC 7543 32-core 2.8 GHz processors; 1 TB of system RAM |  |
Retired
| Cluster | Processor | Nodes | Cores | DWF Performance (GFlops/node) | asqtad Performance (GFlops/node) | In Service |
| qcd | 2.8GHz Single CPU Single Core P4E | 127 | 127 | 1.400 | 1.017 | 2002-2010 |
| pion | 3.2GHz Single CPU Single Core Pentium 640 | 486 | 486 | 1.729 | 1.594 | 2004-2010 |
| kaon | 2.0GHz Dual CPU Dual Core Opteron | 600 | 2,400 | 4.703 | 3.832 | 2006-2013 |
| jpsi | 2.1GHz Dual CPU Quad Core Opteron | 856 | 6,848 | 10.06 | 9.563 | 2008-2014 |
| ds | 2GHz Quad CPU Eight Core Opteron | 420 | 13,440 | 51.52 | 50.55 | 2010-2020 |
| bc | 2.8GHz Quad CPU Eight Core Opteron | 224 | 7,168 | 57.41 | 56.22 | 2013-2020 |
| pi0 | 2.6GHz Dual CPU Eight Core Intel | 314 | 1,152 | 78.31 | 61.49 | 2014-2020 |
The table above shows the measured performance of DWF and asqtad inverters on all the Fermilab LQCD clusters. For qcd and pion, the asqtad numbers were taken on 64-node runs, 14^4 local lattice per node, and the DWF numbers were taken on 64-node runs using Ls=16, averaging the performance of 32x8x8x8 and 32x8x8x12 local lattice runs together. The DWF and asqtad performance figures for kaon use 128-process (32-node) runs, with 4 processes per node, one process per core. The DWF and asqtad performance figures for jpsi use 128-process (16-node) runs, with 8 processes per node, one process per core. The DWF and asqtad performance figures for ds and bc use 128-process (4-node) runs, with 32 processes per node, one process per core.
| qcd: 120-node cluster (decommissioned April 2010) with single-socket 2.8 GHz Pentium 4 processors and a Myrinet fabric. |  |
| pion: 486-node cluster (decommissioned April 2010) with single-socket 3.2 GHz Pentium 640 processors and SDR Infiniband fabric. |  |
| kaon: 600-node cluster (decommissioned August 2013) with dual-socket dual-core Opteron 270 (2.0 GHz) processors and a DDR Mellanox Infiniband fabric. |  |
| jPsi: 856-node cluster (decommissioned May 19, 2014) with dual-socket quad-core Opteron 2352 (2.1 GHz) processors and a DDR Mellanox Infiniband fabric. |  |
| ds: 420-node cluster (224 nodes decommissioned August 2016, 196 nodes decommissioned April 2020) with quad-socket eight-core Opteron 6128 (2.0 GHz) processors and a QDR Mellanox Infiniband fabric. |  |
| dsg: 76-node cluster (decommissioned April 2020) with dual-socket four-core Intel Xeon E5630 processors, two NVIDIA Tesla M2050 GPUs per node and a QDR Mellanox Infiniband fabric. | |
| bc: 224-node cluster (decommissioned April 2020) with quad-socket eight-core Opteron 6320 (2.8 GHz) processors and a QDR Mellanox Infiniband fabric. |  |
| π: 314-node cluster (decommissioned and repurposed April 2020) with dual-socket eight-core Intel E5-2650v2 “Ivy Bridge” (2.6 GHz) processors and a QDR Mellanox Infiniband fabric. |  |
| π0g: 32-node cluster (decommissioned and repurposed April 2020) with dual-socket eight-core Intel E5-2650v2 “Ivy Bridge” (2.6 GHz) processors, four NVidia Tesla K40m GPUs per node and a QDR Mellanox Infiniband fabric. |  |