Scalable virtualization of gpus and compute accelerators in a switch providing cxl resource-as-a-service of memory, nvme or rdma networking via sld agnostic provisioning

Abstract

Embodiments of a switch enabling multiple hosts to concurrently access and share resources of a Single Logical Device (SLD). The switch includes first and second upstream switch ports (USPs) coupled to first and second hosts, and a downstream switch port (DSP) coupled to the SLD. The first USP communicates with the first host according to a first Compute Express Link (CXL) protocol, the second USP communicates with the second host according to a second CXL protocol, and the DSP communicates with a first CXL SLD component according to a third CXL protocol. A Resource Provisioning Unit (RPU) terminates the first, second, and third CXL protocols, and exposes second and third virtualized SLDs, which utilize resources of the first SLD component, to the first and second hosts, respectively. Optionally, the first, second, and third CXL protocols are CXL.mem protocols.