Specifications
Number of Nodes
Number of Nodes | 158,976 nodes |
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Peak Performance
Peak Performance | Normal Mode: 2.0 GHz |
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Boost Mode: 2.2 GHz |
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Total Memory | 4.85 PiB | |
Total Memory Bandwidth | 163 PB/s |
Node
Architecture | Armv8.2-A SVE 512 bit With the following Fujitsu's extensions: Hardware barrier, Sector cache, and Prefetch |
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Number of computational cores | 48 cores | |
Number of assistant cores | Computational node: 2 cores I/O and computational node: 4 cores |
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Performance | Normal Mode: 2.0 GHz | DP: 3.072 TFLOPS, SP: 6.144 TFLOPS, HP: 12.288 TFLOPS |
Boost Mode: 2.2 GHz | DP: 3.3792 TFLOPS, SP: 6.7584 TFLOPS, HP: 13.5168 TFLOPS | |
Cache (Notes:1) (Notes:2) | L1D/core: 64 KiB, 4way, 256 GB/s (load), 128 GB/s (store) | |
L2/CMG: 8 MiB, 16way L2/node: 4 TB/s (load), 2 TB/s (store) L2/core: 128 GB/s (load), 64 GB/s (store) |
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Memory | HBM2 32 GiB, 1024 GB/s | |
Interconnect | Tofu Interconnect D (28 Gbps x 2 lane x 10 port) | |
I/O | PCIe Gen3 x16 | |
Technology | 7nm FinFET |
- (Notes:1)Performance at 2 GHz
- (Notes:2)For more information, please refer to https://github.com/fujitsu/A64FX
Storage System
1st Layer | LLIO (Lightweight Layered IO-Accelerator) LLIO is a file system dedicated to the job execution area. Providing the following three types of areas to the job.
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2nd Layer | FEFS (Fujitsu Exabyte File System) FEFS is a large shared area used by users and jobs. Luster-based file system. |
3rd Layer | Commercial cloud storage services |
Programming Language and Library
Compiler | Fortran2008 & Fortran2018 subset |
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C11 & GNU and Clang extensions | |
C++14 & C++17 subset and GNU and Clang extensions | |
OpenMP 4.5 & OpenMP 5.0 subset | |
Java | |
Parallel Programming | XcalableMP |
FPDPS | |
Script Language | Python + Numpy + Scipy, Ruby |
Math Library | BLAS, LAPACK, ScaLAPACK |
SSL II (Fujitsu) | |
EigenExa, Kevd, Batched BLAS, 2.5D-PDGEMM |
System Software
OS | Red Hat Enterprise Linux 8 |
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McKernel | |
MPI | Fujitsu MPI (Based on OpenMPI), RIKEN-MPICH (Based on MPICH) |
File IO | LLIO |
Application-oriented file IO libraries |