Memory Machine X Blog
Unleashing the Future of Memory Management: Exploring CXL Dynamic Capacity Devices with Docker and QEMU
In the ever-advancing realm of technology, developers and application owners always look for innovative tools and methodologies to boost performance and scalability. A revolutionary stride in this direction is the integration of Compute Express Link (CXL) technology, particularly through the utilization of Dynamic Capacity Devices (DCD). CXL, an open standard for high-speed CPU-to-device and CPU-to-memory interconnects, substantially enhances data center and cloud environments, offering many benefits.
Memory Wall, Big Memory, and the Era of AI
In the fast-evolving landscape of artificial intelligence (AI), where models are growing larger and more complex by the day, the demand for efficient processing of vast amounts of data has ushered in a new era of computing infrastructure.
Emulating CXL Memory Expanders in QEMU
Build and install a working branch of QEMU. Launch a pre-made QEMU instance with a CXL Memory Expander. Create a memory region for the CXL Memory Expander. Convert that memory region between DEVDAX and NUMA Modes.
Emulating CXL Shared Memory Devices in QEMU
Build and install a working branch of QEMU. Launch a pre-made QEMU lab with 2 hosts utilizing a shared memory device. Access the shared memory region through a devdax device, and share information between the two hosts to verify that the shared memory region is functioning.
The Dawn of the CXL Era
As the first server processor that will officially support the CXL 1.1+ memory interconnect, AMD 4th Gen EPYC Processors mark the beginning of the CXL era.