Shulou(Shulou.com)11/24 Report--

CTOnews.com November 10, Meta and AMD demonstrated the Computational Fast Link (CXL) memory of Type-3 devices at the 2023 OCP Summit held recently.

CXL memory can achieve high-speed processor-to-device (processor-to-device) and processor-to-memory interface (processor-to-memory interface), improve memory efficiency, save money for very large enterprises, and improve performance at the same time.

CTOnews.com Note: CXL is an open standard jointly developed by major hardware vendors and cloud providers in 2019 and is still growing rapidly.

Specifically, compared with the traditional PCIe interconnection, it provides a new set of features that enable CPU to communicate with peripherals (and their connected memory) in a cache-consistent manner with load / storage semantics. Therefore, memory-related device extension is one of the main target scenarios for CXL.

The CXL standard defines three separate protocols: CXL.io, CXL.cache and CXL.mem. CXL.io uses functions such as TLP and DLLP in standard PCIe and is mainly used for protocol negotiation and host device initialization. CXL.cache and CXL.mem use the above protocol header for device access to host memory and host access device memory, respectively.

The Type-3 devices shown in this show support CXL.io and CXL.mem, and these devices are generally seen as memory extensions to existing systems.

The two companies demonstrated on a motherboard with an AMD EPYC 9004 Genoa processor, surrounded by four dual in-line memory module (DIMM) slots, a heatsink and fan, and equipped with a PCIe x16 connector.

One of the main promises of CXL memory is that it has the potential to allow very large-scale enterprises to reuse DRAM, and the master can connect DDR4 / DDR5 memory to CXL, resulting in significant cost savings.

Using CXL memory may be a way for these companies to continue to use any DDR4 RAM units they want to phase out as additional memory to enhance newer units and enhance their server configurations.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.