Lenovo ThinkSystem Cornelis CN5000 Omni-Path QSFP112 Adapter: технические характеристики и документация
Abstract
The ThinkSystem Cornelis CN5000 Omni-Path QSFP112 HFI Adapter is a high-performance Omni-Path Host Fabric Interface (HFI) adapter that is purpose-built to deliver industry-leading performance in extreme-scale environments. The adapter has one QSFP112 cage that supports 400Gb Omni-Path connectivity with under 1 µs of MPI latency.
This product guide provides essential presales information to understand the Cornelis CN5000 adapter and its key features, specifications, and compatibility. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about the Cornelis CN5000 adapter and consider its use IT solutions.
Change History
Changes in the March 6, 2026 update:
- Clarified that the Cornelis CN5000 adapter does not support XClarity OneCLI or out-of-band management - Technical specifications section
- Added a note that the Cornelis CN5000 adapter is not supported with any NVIDIA or Mellanox network adapters due to a driver incompatibility - Server support section
Introduction
The ThinkSystem Cornelis CN5000 Omni-Path QSFP112 HFI Adapter is a high-performance Host Fabric Interface (HFI) adapter implementing Omni-Path Architecture (OPA). The adapter is purpose-built to deliver industry-leading performance in extreme-scale environments. The adapter has one QSFP112 cage that supports 400Gb OPA connectivity with under 1 µs of MPI latency.
The following figure shows the air-cooled 1-port variant of the Cornelis CN5000 adapter. The water-cooled adapter used direct-connect cold plates and copper piping to remove heat from the adapter.
Figure 1. ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW)
Did you know?
Omni-Path offers benefits like high performance, low latency, and superior scalability for High-Performance Computing (HPC) and AI workloads by using adaptive and dispersive routing. OPA provides improved reliability with advanced error correction, cost-effectiveness through CPU-fabric integration and higher node counts per switch, and flexibility with support for multiple routing methods and standard protocols.
Part number information
The following table shows the ordering information.
| Part number |
Feature code |
Description | Port count |
Cornelis equivalent |
|---|---|---|---|---|
| Air-cooled adapter | ||||
| 4XC7B00020 | C5MY | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW) | 1 port | CN5HFA1Q5AFS |
| Water-cooled adapter | ||||
| 4XC7B00138 | CB7C | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW) | 1 port | CN5HFA1Q5NLS |
The option part number includes the following:
- One Cornelis adapter with full-height (3U) adapter bracket attached
- Low-profile (2U) adapter bracket
- Documentation
Supported transceivers and cables
The Cornelis CN5000 adapter has one empty QSFP112 cage for connectivity.
The following table lists the supported rack cabinets.
| Model | Description |
|---|---|
| 7D6DA007WW | ThinkSystem 42U Onyx Primary Heavy Duty Rack Cabinet (1200mm) |
| 7D6DA008WW | ThinkSystem 42U Pearl Primary Heavy Duty Rack Cabinet (1200mm) |
| 7D6EA009WW | ThinkSystem 48U Onyx Primary Heavy Duty Rack Cabinet (1200mm) |
| 7D6EA00AWW | ThinkSystem 48U Pearl Primary Heavy Duty Rack Cabinet (1200mm) |
| 93074RX | 42U Standard Rack (1000mm) |
| 93604PX | 42U 1200mm Deep Dynamic Rack |
| 93604EX | 42U 1200mm Deep Dynamic Expansion Rack |
| 93614PX | 42U 1200mm Deep Static Rack |
| 93614EX | 42U 1200mm Deep Static Expansion Rack |
| 93634PX | 42U 1100mm Dynamic Rack |
| 93634EX | 42U 1100mm Dynamic Expansion Rack |
| 93084PX | 42U Enterprise Rack |
| 93084EX | 42U Enterprise Expansion Rack |
For specifications about these racks, see the Lenovo Rack Cabinet Reference, available from:
https://lenovopress.com/lp1287-lenovo-rack-cabinet-reference
For more information, see the list of Product Guides in the Rack cabinets category:
https://lenovopress.com/servers/options/racks
Features
Maximum Performance at Any Scale
The CN5000 SuperNIC delivers unmatched scalability through dynamic adaptive routing, traffic flow optimization, and credit-based flow control. It supports lossless and congestion-free data transmission using fine-grained adaptive routing and dynamic lane scaling—ensuring low tail latency, high throughput, and robust data integrity even in the most demanding environments.
With these architectural features, including optimized link protection, the CN5000 SuperNIC maximizes compute efficiency, improves system reliability, and lowers total cost of ownership across AI and HPC deployments at scale.
Telemetry for Precision Control
The CN5000 SuperNIC is equipped with advanced telemetry engines, delivering real-time insights and granular network visibility to optimize AI and HPC workloads. The CN5000 SuperNIC continuously monitors traffic patterns and enables automated congestion mitigation and real-time traffic adjustment, reducing manual troubleshooting and improving workload stability.
With industry-leading, real-time telemetry and precision network intelligence, CN5000 SuperNICs ensure unparalleled visibility, efficiency, and control by delivering high-performance networking across compute environments at any scale.
Reliability and Adaptability for Maximum Efficiency
In AI and HPC, consistent and reliable network performance is crucial for maximizing computational efficiency. The CN5000 SuperNIC features advanced error correction and dynamic network function placement, ensuring maximum network efficiency.
The CN5000 SuperNIC offers maximum resiliency to ensure uptime even during failures and no error-driven retries. These innovations deliver superior reliability and adaptability for evolving AI and HPC environments, minimizing downtime, reducing retransmissions, and helping ensure high system availability for mission-critical workloads.
Advanced Networking for Generative and Agentic AI and HPC Workloads
Designed for demanding AI and HPC workloads, the CN5000 SuperNIC provides 400G bidirectional bandwidth, maximizing data throughput across the fabric. Its architecture prioritizes ultra-low latency and high message rates with sub-1μs MPI latency, ensuring timely inferencing and accelerated AI model training.
The CN5000 SuperNIC optimizes real-time inferencing, shortens feedback loops, and reduces time-toresults. Its robust and efficient design makes it the ideal choice for highly parallelized applications at any scale.
Omni-Path Architecture
CN5000 Architecture delivers lossless and congestion-free data transmission with credit-based flow control and dynamic fine-grained adaptive routing. It is designed for maximum performance, reliability, scalability, and data integrity with dynamic lane scaling and optimized link protection.
Technical specifications
- Performance
- Single-port 400Gb Omni-Path connectivity
- Less than 1 µs MPI latency
- Supports >100K node clusters
- PCIe 5.0 x16 host interface
- Key Features
- Supports MSI-X interrupt handling
- Enhanced resource scaling
- Optimized send and receive buffer management for high message rate applications
- Supports Single Root I/O Virtualization (SR-IOV)
- Supports industry standard management interfaces
- Configurable from one to four VLs plus one management
- Configurable MTU size of 2 KB, 4 KB, 8 KB, or 10 KB VL
- PCI Express Base Specification 5.0 compliant
- Advanced Features
- Advanced Congestion Management
- Fine-Grained Adaptive Routing (FGAR)
- Static Dispersive Routing (SDR)
- Management Features
- Optimized for scalable MPI and SHMEM message rate and latency
- Includes support for standard telemetry protocols (PLDM, MCTP, Redfish) to streamline system integration and firmware updates
- Integrated management processor supports host monitoring, query, and updates.
- Supported interfaces include:
- MCTP over SMBus
- MCTP over PCIe
- PLDM for Platform Monitoring and Control
- PLDM for Firmware Update
- PLDM for Redfish Device Enablement (RDE) support
Note: The Cornelis CN5000 adapter does not support XClarity OneCLI or out-of-band management.
Server support
The following tables list the ThinkSystem servers that are compatible.
Not supported with NVIDIA network adapters: The Cornelis CN5000 adapter is not supported with any NVIDIA or Mellanox network adapters due to a driver incompatibility.
| Part Number | Description | AMD V3 | 2S Intel V3/V4 | 1S V3 | 4S 8S Intel V3/V4 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SR635 V3 (7D9H / 7D9G) |
SR655 V3 (7D9F / 7D9E) |
SR645 V3 (7D9D / 7D9C) |
SR665 V3 (7D9B / 7D9A) |
SD535 V3 (7DD8 / 7DD1) |
ST650 V3 (7D7B / 7D7A) |
SR630 V3 (7D72 / 7D73) |
SR650 V3 (7D75 / 7D76) |
SR630 V4 (7DG8 / 7DG9) |
SR650 V4 (7DGC / 7DGD) |
SR650a V4 (7DGC / 7DGD) |
ST45 V3 (7DH4 / 7DH5) |
ST50 V3 (7DF4 / 7DF3) |
ST250 V3 (7DCF / 7DCE) |
SR250 V3 (7DCM / 7DCL) |
SR850 V3 (7D97 / 7D96) |
SR860 V3 (7D94 / 7D93) |
SR950 V3 (7DC5 / 7DC4) |
SR850 V4 (7DJT / 7DJS) |
SR860 V4 (7DJQ / 7DJN) |
||
| 4XC7B00020 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW) | Y | Y | Y | Y | N | N | N | N | Y | Y | Y | N | N | N | N | N | N | N | N | N |
| 4XC7B00138 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Part Number | Description | AI Servers | Edge | Super computing | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
SR675 V3 (7D9Q / 7D9R) |
SR680a V3 B200 (7DM9) |
SR685a V3 (7DHC) |
SR780a V3 (7DJ5) |
SR680a V4 (7DMK) |
SE100 (7DGR) |
SE455 V3 (7DBY) |
SC750 V4 (7DDJ) |
SC777 V4 (7DKA) |
SD665 V3 (7D9P) |
||
| 4XC7B00020 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW) | Y | N | N | N | N | N | N | N | N | N |
| 4XC7B00138 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW) | N | N | N | N | N | N | N | Y | N | Y |
| Part Number | Description | Edge | 1S Intel V2 | 2S Intel V2 | AMD V1 | Multi node | AI | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SE350 (7Z46 / 7D1X) |
SE350 V2 (7DA9) |
SE360 V2 (7DAM) |
SE450 (7D8T) |
ST50 V2 (7D8K / 7D8J) |
ST250 V2 (7D8G / 7D8F) |
SR250 V2 (7D7R / 7D7Q) |
ST650 V2 (7Z75 / 7Z74) |
SR630 V2 (7Z70 / 7Z71) |
SR650 V2 (7Z72 / 7Z73) |
SR635 (7Y98 / 7Y99) |
SR655 (7Y00 / 7Z01) |
SR645 (7D2Y / 7D2X) |
SR665 (7D2W / 7D2V) |
SD530 V3 (7DDA / 7DD3) |
SD550 V3 (7DD9 / 7DD2) |
SR670 V2 (7Z22 / 7Z23) |
SR680a V3 (7DHE) |
||
| 4XC7B00020 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| 4XC7B00138 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Part Number | Description | SC | Dense V2 | 4S V2 | 8S | 4S V1 | 1S Intel V1 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SD665-N V3 (7DAZ) |
SD650 V3 (7D7M) |
SD650-I V3 (7D7L) |
SD650-N V3 (7D7N) |
SD630 V2 (7D1K) |
SD650 V2 (7D1M) |
SD650-N V2 (7D1N) |
SN550 V2 (7Z69) |
SR850 V2 (7D31 / 7D32) |
SR860 V2 (7Z59 / 7Z60) |
SR950 (7X11 / 7X12) |
SR850 (7X18 / 7X19) |
SR850P (7D2F / 2D2G) |
SR860 (7X69 / 7X70) |
ST50 (7Y48 / 7Y50) |
ST250 (7Y45 / 7Y46) |
SR150 (7Y54) |
SR250 (7Y52 / 7Y51) |
||
| 4XC7B00020 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| 4XC7B00138 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Part Number | Description | 2S Intel V1 | Dense V1 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ST550 (7X09 / 7X10) |
SR530 (7X07 / 7X08) |
SR550 (7X03 / 7X04) |
SR570 (7Y02 / 7Y03) |
SR590 (7X98 / 7X99) |
SR630 (7X01 / 7X02) |
SR650 (7X05 / 7X06) |
SR670 (7Y36 / 7Y37) |
SD530 (7X21) |
SD650 (7X58) |
SN550 (7X16) |
SN850 (7X15) |
||
| 4XC7B00020 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N |
| 4XC7B00138 | ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW) | N | N | N | N | N | N | N | N | N | N | N | N |
Operating system support
The adapter supports the operating systems listed in the following tables:
- ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW), 4XC7B00020
- ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW), 4XC7B00138
Tip: These tables are automatically generated based on data from Lenovo ServerProven.
ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW), 4XC7B00020
The following table lists the OS support for the ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC (Generic FW).
| Operating systems | SR645 V3 |
SR665 V3 |
SR635 V3 |
SR655 V3 |
SR675 V3 |
SR630 V4 |
SR650 V4/SR650a V4 |
|---|---|---|---|---|---|---|---|
| Red Hat Enterprise Linux 9.4 | Y | Y | Y | Y | Y | Y | Y |
| Red Hat Enterprise Linux 9.5 | Y | Y | Y | Y | Y | Y | Y |
| Red Hat Enterprise Linux 9.6 | Y | Y | Y | Y | Y | Y | Y |
| Red Hat Enterprise Linux 9.7 | N | N | Y | N | N | N | N |
| Red Hat Enterprise Linux 10.0 | N | N | Y | N | N | N | N |
| SUSE Linux Enterprise Server 15 SP7 | N | N | Y | N | N | N | N |
| Ubuntu 24.04 LTS or later with HWE kernel | N | N | Y | N | N | N | N |
ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW), 4XC7B00138
The following table lists the OS support for the ThinkSystem Cornelis CN5000 Omni-Path 1-Port QSFP112 HFI SuperNIC DWC (Generic FW).
| Operating systems | SD665 V3 |
SC750 V4 |
|---|---|---|
| Red Hat Enterprise Linux 8.6 | Y | N |
| Red Hat Enterprise Linux 8.8 | Y | N |
| Red Hat Enterprise Linux 8.9 | Y | N |
| Red Hat Enterprise Linux 8.10 | Y | N |
| Red Hat Enterprise Linux 9.0 | Y | N |
| Red Hat Enterprise Linux 9.2 | Y | N |
| Red Hat Enterprise Linux 9.3 | Y | N |
| Red Hat Enterprise Linux 9.4 | Y | N |
| Red Hat Enterprise Linux 9.6 | Y | Y |
| Red Hat Enterprise Linux 10.0 | Y | Y |
| SUSE Linux Enterprise Server 15 SP4 | Y | N |
| SUSE Linux Enterprise Server 15 SP4 with Xen | Y | N |
| SUSE Linux Enterprise Server 15 SP5 | Y | N |
| SUSE Linux Enterprise Server 15 SP5 with Xen | Y | N |
| SUSE Linux Enterprise Server 15 SP6 | Y | N |
| SUSE Linux Enterprise Server 15 SP7 | Y | N |
| SUSE Linux Enterprise Server 16 | Y | Y |
| Ubuntu 24.04 LTS or later with HWE kernel | Y | N |
Regulatory approvals
The adapter has the following regulatory approvals:
- Emissions/Immunity:
- US: FCC Part 15, Subpart B, Class A
- Canada: CAN ICES-3(A)/NMB-3(A) Issue 7
- Europe: EN55032 (CISPR32), EN55035 (CISPR35), EN61000-3-2, EN61000-3-3
- Japan: VCCI, Class A
- AS/NZ: CISPR 32, Class A
- Korea: KS C 9832 Class A (Emissions), KS C 9835 (Immunity)
- Taiwan: BSMI (CNS 15936), Class A
- Safety:
- US/Canada: TUV NRTL 62368-1, CSA 22.2. No. 62368-1
- Europe: TUV EN662365-1
- International: CB Scheme: IEC 62368-1 , IEC 60950-1
- Environmental:
- RoHS Directive 2011/65/EU2,
- RoHS Directive 2015/863
- REACH Regulation (EC) No 1907/2006
Operating environment
The adapter has the following operating characteristics:
- Temperature
- Operating: 0 to 55°C (derated 1°C/175 m above 900 m)
- Storage: -40 to 70°C
- Humidity
- Operating: 10% to 85% non-condensing
- Storage: 5% to 95% non-condensing
- Altitude
- Operating: 0 to 3,200 m
- Storage: 0 to 10,000 m
Warranty
One year limited warranty. When installed in a Lenovo server, the adapter assumes the server’s base warranty and any warranty upgrades.
Related product families
Product families related to this document are the following:
- InfiniBand & Omni-Path Adapters
- Omni-Path Switches
Trademarks
Lenovo and the Lenovo logo are trademarks or registered trademarks of Lenovo in the United States, other countries, or both. A current list of Lenovo trademarks is available on the Web at https://www.lenovo.com/us/en/legal/copytrade/.
The following terms are trademarks of Lenovo in the United States, other countries, or both:
Lenovo®
ServerProven®
ThinkSystem®
XClarity®
The following terms are trademarks of other companies:
AMD® is a trademark of Advanced Micro Devices, Inc.
Intel®, the Intel logo is a trademark of Intel Corporation or its subsidiaries.
Linux® is the trademark of Linus Torvalds in the U.S. and other countries.
NVIDIA® is a trademark of NVIDIA Corporation.
Other company, product, or service names may be trademarks or service marks of others.