Intel 100HFA016LS interface cards/adapter Internal QSFP28 **

Intel Omni-Path Host Fabric Interface (HFI)
Designed specifically for HPC, the Intel Omni-Path Host Fabric Interface (Intel OP HFI) uses an advanced connectionless design that delivers performance that scales with high node and core counts, making it the ideal choice for the most demanding application environments. Intel OP HFI supports 100 Gbps per port, which means each Intel OP HFI port can deliver up to 25 GBps per port of bidirectional bandwidth. The same ASIC utilized in the Intel OP HFI will also be integrated into future Intel Xeon processors and used in third-party products.

Each HFI supports:
- Multi-core scaling support for up to 160 contexts;
- 16 Send DMA engines (M2IO usage);
- Efficiency large MTU support (4 KB, 8 KB, and 10KB) for reduced per-packet processing overheads. Improved packet-level interfaces to improve utilization of on-chip resources.
- Receive DMA engine arrival notification;
- Each HFI can map ~128 GB window at 64 byte granularity;
- Up to 8 virtual lanes for differentiated QoS;
- ASIC designed to scale up to 160M messages/second and 300M bidirectional messages/second.

Intel Omni-Path Host Fabric Interface (HFI) Optimizations
Much of the improved HPC application performance and low end-to-end latency at scale comes from the following enhancements:

Enhanced Performance Scaled Messaging (PSM).
The application view of the fabric is derived heavily fromand application-level software compatible withthe demonstrated scalability of Intel True Scale Fabric architecture by leveraging an enhanced next generation version of the Performance Scaled Messaging (PSM) library. Major deployments by the US Department of Energy and other have proven this scalability advantage. PSM is specifically designed for the Message Passing Interface (MPI) and is very lightweightone-tenth of the user space codecompared to using verbs. This leads to extremely high MPI and Partitioned Global Address Space (P