Nvidia BlueField-2 InfiniBand User Manual

NVIDIA BlueField-2 InfiniBand/Ethernet DPU User Guide 43
The DPU incorporates an integrated Hardware Clock (PHC) to allow the DPU to achieve
sub-20u Sec accuracy and also offers many timing-related functions such as time-
triggered scheduling or time-based SND accelerations (time-based ASAP²). Furthermore,
5T technology enables the software application to transmit fronthaul (ORAN) at high
bandwidth. The PTP part supports the subordinate clock, master clock, and boundary
clock.
The DPU PTP solution allows you to run any PTP stack on your host.
With respect to testing and measurements, selected NVIDIA DPUs allow you to use the
PPS-out signal from the onboard MMCX RA connectors; the DPU also allows measuring
PTP in scale, with the PPS-In signal. The PTP HW clock on the Network adapter will be
sampled on each PPS-In signal, and the timestamp will be sent to the SW.

Nvidia BlueField-2 InfiniBand Specifications

General

Processor	Arm Cortex-A72
Connectivity	InfiniBand, Ethernet
Security	Hardware Root of Trust, Secure Boot
Crypto Acceleration	Yes
Architecture	Arm
PCIe Interface	PCIe 4.0 x16
Security Acceleration	Yes
Network Acceleration	Yes
Network Interface	InfiniBand
Memory	16GB DDR4
Form Factor	PCIe
Product Type	DPU (Data Processing Unit)
Ethernet Speed	200Gbps
Storage	NVMe over Fabric support
Networking Features	RDMA, RoCE, SR-IOV
Cores	8x Arm A72 cores