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rmNVMe-IP (Random Access & Multi User NVMe IP) is very high performance NVMe Host Controller which is highly optimized for high-IOPS random access applications. rmNVMe-IP supports multiple user interfaces, each user can simultaneously read/write to a single NVMe SSD at the same time. This IP is designed for the application that requires very random access performance such as real-time sensors data fusion and processing, OS file systems offloading and NVMe SSD tester. By pure hardware logic implementation, rmNVMe-IP is best in class in energy efficient, high performance and low FPGA resource usages for next generation applications.

No CPU/DDR required Standard Type	No PCIe Hard IP required	>500K IOPS random write access	Multi user simultaneously access	Random Access By Multiple Users

NVMe-IP core series Selection Guide to choose suitable solution

Introduction Videos

rmNVMe-IP : Introduction Blogs

rmNVMe-IP : Application Blogs

Features NVMe host controller for access one NVMe SSD without CPU and external memory Support two users to Write and Read one SSD simultaneously User#0 (Main user): Identify, Shutdown, Read, SMART, and Flush User#1 (Sub user): Write Support multiple Write and Read commands for 4Kbyte random access Configurable Command Depth of Write and Read command independently: 32 - 256 Commands Buffer size depend on Command Depth: 128Kbyte (for 32 Commands) - 1Mbyte (for 256 Commands) Simple user interface by using data stream interface User clock frequency must be more than or equal to PCIe clock (250MHz for Gen4) Operating with Integrated Block for PCI Express by using 4-lane Gen4 (256-bit bus interface)

Block Diagram

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* Features and specifications are planned and subject to change without notice.

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Technical Documents

Support Devices	Versal
IP core	Datasheet	Reference Design Document	Demo Instruction Document	FPGA Board Setup	Evaluation demo file	Demo Video
rmNVMe-IP	Rev1.0	Rev1.0	Rev1.1	Rev4.7	VCK190	Blogs

Application Example

Multithreading for Database Server

The FPGA can be utilized as the offload engine for the database server to access storage, NVMe SSD. In large-scale systems, multiple threads frequently access the database, leading to a high volume of read and write requests being sent to the CPU. The write data, which is usually of a large size, is stored in the main memory. The FPGA platform's PCIe engine provides an interface that allows the offload engine to receive command requests from the CPU and directly access the data in the main memory with high performance.

The File Offload Engine sends read and write requests to the rmNVMe IP via the Read Command Interface and Write Command Interface, respectively. All write data is transferred via the Write Data Interface and stored in the NVMe SSD. The read data from the NVMe SSD is returned to the File Offload Engine via the Read Data Interface and finally, returned to the thread through the main memory.

By utilizing this hardware system, the database can be accessed with high performance while requiring less CPU resources.

Accessories for evaluation

Accessories for evaluation	Description
AB18-PCIeX16	PCIe x16 Lanes Crossover adapter board for NVMe-IP evaluation Download manual	Purchase

About price and licence of this IP core, please contact Design Gateway.