Tuolumne - HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS

Site: DOE/NNSA/LLNL
Manufacturer: HPE
Cores: 1,161,216
Processor: AMD 4th Gen EPYC 24C 1.8GHz
Interconnect: Slingshot-11
Installation Year: 2024
Performance
Linpack Performance (Rmax) 208.10 PFlop/s
Theoretical Peak (Rpeak) 288.88 PFlop/s
Nmax 8,294,400
Power Consumption
Power: 3,386.62 kW
Power Measurement Level: 2
Software
Operating System: TOSS
Compiler: g++ 12.2.1 and hipcc 6.2.0
Math Library: AMD rocBLAS 6.0.2 and Intel MKL 2016
MPI: HPE Cray MPI
List Rank System Vendor Total Cores Rmax (PFlop/s) Rpeak (PFlop/s) Power (kW)
06/2026 14 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 1,161,216 208.10 288.88 3,386.62
11/2025 12 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 1,161,216 208.10 288.88 3,386.62
06/2025 12 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 1,161,216 208.10 288.88 3,386.62
11/2024 10 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 1,161,216 208.10 288.88 3,386.62