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

Site: DOE/NNSA/LLNL
Manufacturer: HPE
Cores: 11,340,000
Processor: AMD 4th Gen EPYC 24C 1.8GHz
Interconnect: Slingshot-11
Installation Year: 2024
Performance
Linpack Performance (Rmax) 1,809.00 PFlop/s
Theoretical Peak (Rpeak) 2,821.10 PFlop/s
Nmax 24,768,000
HPCG 17,406.0 TFlop/s
Power Consumption
Power: 29,684.62 kW
Power Measurement Level: 2
Software
Operating System: TOSS
Compiler: g++ 8.5.0 and hipcc 6.4.2
Math Library: AMD rocBLAS 6.4.2
MPI: HPE Cray MPI
List Rank System Vendor Total Cores Rmax (PFlop/s) Rpeak (PFlop/s) Power (kW)
06/2026 2 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 11,340,000 1,809.00 2,821.10 29,684.62
11/2025 1 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 11,340,000 1,809.00 2,821.10 29,684.62
06/2025 1 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 11,039,616 1,742.00 2,746.38 29,580.98
11/2024 1 HPE Cray EX255a, AMD 4th Gen EPYC 24C 1.8GHz, AMD Instinct MI300A, Slingshot-11, TOSS HPE 11,039,616 1,742.00 2,746.38 29,580.98