Data Center Model

Model Overview

Ideal for large scale processing in data centers and compute centers

Application Field: Large-scale AI/big data, large-scale simulation, etc.
< 2U Rackmount Model

Model Image
Model Name B401-8
Number of Vector Engines (VE) installed 8
Form Factor 2U rack mount

Vector Engine (VE)

Mainly performs application arithmetic processing.

Number of Vector Engines (VE) that can be installed 8
Model Name B401-8
Card Type 20A/20B
Maximum total VE Operation Performance (TFLOPS) Double Precision 24.57
Maximum total VE Operation Performance (TFLOPS) Single Precision 49.15
Maximum total VE Memory Bandwidth (TB/s) 12.24
Maximum VE Memory Capacity (GB) 384

Vector Host (VH)

Mainly performs OS processing.

Number of x86 Processors/VH 1
x86 Processor AMD EPYC™ processor
Memory Configuration/VH DDR4 DIMM x 8 / CPU
Maximum Memory Capacity/VH 512GB
Maximum disk capacity SATA SSD 1.92TB
InfiniBand HDR
Number of HCAs 2
Bandwidth per HCA 200Gbps
OS Click here for supported OS

Installation Specifications

Power 4.0kW
Number of power supplies 2
Power cable connector shape AC200V power cable IEC C13 IEC C14
Cooling Water cooling + Air cooling
Operating Temperature 10°C to 40°C
Recommended Operating Temperature 10°C to 40°C
Volume (sound pressure level) 68.1 dBA


By using NEC's original compiler the Vector Engine is easy to use.

Standard Software Vector Engine control software and driver
Software Development Support NEC Software Development Kit for Vector Engine, NEC MPI, NEC MPI/Scalar-Vector Hybrid