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Host
Managem
ent
ConnectX-7 technology maintains support for host manageability through a BMC. ConnectX-7
PCIe stand-up adapter can be connected to a BMC using MCTP over SMBus or MCTP over PCIe
protocols as if it is a standard NVIDIA PCIe stand-up adapter card. For configuring the adapter for
the specific manageability solution in use by the server, please contact NVIDIA Support.
Protocols: PLDM, NCSI
Transport layer – RBT, MCTP over SMBus and MCTP over PCIe
Physical layer: SMBus 2.0 / I2C interface for device control and configuration, PCIe
PLDM for Monitor and Control DSP0248
PLDM for Firmware Update DSP026
IEEE 1149.6
SecuredFW update
FWRecovery
NIC reset
Monitoring and control
Network port settings
Boot setting
Accurate
timing
NVIDIA offers a full IEEE 1588v2 PTP software solution, as well as time-sensitive related features
called “5T”. NVIDIA PTP and 5T software solutions are designed to meet the most demanding
PTP profiles. ConnectX-7 incorporates an integrated Hardware Clock (PHC) that allows
ConnectX-7 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) compatible in high
bandwidth. The PTP part supports the subordinate clock, master clock, and boundary clock.
ConnectX-7 PTP solution allows you to run any PTP stack on your host.
With respect to testing and measurements, selected NVIDIA adapters allow you to use the PPS-
out signal from the onboard SMA connecter, ConnectX-7 also allows measuring PTP in scale, with
a 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.
RDMA and
RDMA
over
Converge
d
Ethernet
(RoCE)
ConnectX-7, utilizing IBTA RDMA (Remote Data Memory Access) and RoCE (RDMA over Converged
Ethernet) technology, delivers low-latency and high-performance over InfiniBand and Ethernet
networks. Leveraging datacenter bridging (DCB) capabilities as well as ConnectX-7 advanced
congestion control hardware mechanisms, RoCE provides efficient low-latency RDMA services
over Layer 2 and Layer 3 networks.
NVIDIA
PeerDirec
t™
PeerDirect™ communication provides high-efficiency RDMA access by eliminating unnecessary
internal data copies between components on the PCIe bus (for example, from GPU to CPU), and
therefore significantly reduces application run time. ConnectX-7 advanced acceleration
technology enables higher cluster efficiency and scalability to tens of thousands of nodes.
CPU
Offload
Adapter functionality enables reduced CPU overhead allowing more available CPU for
computation tasks.
Flexible match-action flow tables
Open VSwitch (OVS) offload using ASAP
2
®
Tunneling encapsulation/decapsulation
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