Overview
Mellanox MCX623105AC-VDAT SmartNIC is a high-performance network interface card (NIC) designed specifically for cloud and data center environments that demand the highest levels of network functionality.
List of Features
Connectivity: Dual 100G Infiniband/ Ethernet
Virtual Protocol Interconnect (VPI) technology for flexible and efficient network connectivity
Integrated RDMA for superior CPU utilization and application performance
Advanced network offloads, including support for NVMe over Fabrics (NVMe-oF)
Secure firmware updates for enhanced security
Specifications
Part Number
MCX623105AC-VDAT
Speed
Dual 100Gbps IB and Ethernet ports
PCIe Interface
PCIe 4.0 x16
Protocol Support
Infiniband, Ethernet, RoCE and NVMe-oF
Form Factor
Low profile
Operating Temperature
0°C to 55°C
Using Technologies
The Mellanox MCX623105AC-VDAT SmartNIC uses the following technologies:
Virtual Protocol Interconnect (VPI) technology - this technology allows the SmartNIC to support both Infiniband and Ethernet. It uses adaptive routing for load-balancing and automatic re-routing to ensure network traffic flows through the most optimal path at all times.
Remote Direct Memory Access (RDMA) - this application offloading technology enables direct memory access from one computer to another without intervention from the CPU or Operating System, for more efficient data transfer and lower latency. With RDMA, applications have direct access to data without requiring any data to be copied multiple times, thus providing low latency and high throughput.
Network Offloads - these improve the SmartNIC's performance by offloading certain tasks from the host processor(pcie). This includes tasks like checksum validation, traffic regeneration, and protocol conversion. The SmartNIC also supports connections to storage arrays through NVMe-oF using storage-class memory for superior performance improvements in ultra-high-performance storage. This is critical when deploying highly parallel workloads when processor cores must be saved in order to increase system efficiency..
Known Issues
As with all complex technology devices, there are certain issues that pack comes with. Some common issues (man go reference documentation for more cases) which users reported with the Mellanox MCX623105AC-VDAT SmartNIC are:
Difficulties in configuring the advanced features of the NIC
Drop in capacity in Dense mode multicasting
Drooping InfiniBand links intermittently during Mellanox BD tests
Some clocks seem to misbehave initially und-der PM_SLEEP before power mgmt.
Troubleshooting
Here are some recommended troubleshooting approaches to possibly fix such issues:
Make sure you have the most current firmware and drivers
Leverage the down streaming you found helpful related to your specific issues online
Go to support and check Mellanox open community and latest update on this device issues. Its worth bugging their page to get notify featured latest update on your concerned defect or assembly
Try trouble isolation tactics systematically to remove emerging failure points.
Driver information
The Mellanox MCX623105AC-VDAT SmartNIC requires the Mellanox driver (mlx5_core) to be loaded as a to get this card working on linux. The Mellanox driver provides full protocol and data path offloads. More secure cloud connectivity strategies can be sought using configurable filters (or receive, transmit, and general) together or as separate agents, advanced flow steering which is needed for adaptive operation based on observed traffic, hash generator for custom fitting routing algorithms using command sets through API, RoCE technologies, virtual packet switching and operating automation enabled operations, and pluggable transport provisions that enable applications breakdown of communication bandwidth consumed.
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