Method and system for performing dynamic host memory buffer (HMB) management in PCIe based devices

An apparatus for performing dynamic Host Memory Buffer (HMB) management in a Peripheral Component Interconnect express (PCIe) based device, the apparatus comprising:

• a controller;
• and
• a memory, communicatively coupled to the controller, and storing instructions, which when executed by the controller cause the controller to:
• estimate a potential memory requirement for one or more memory intensive operations to be performed by the PCIe based device;
• transmit a first request to a host device associated with the PCIe based device, the first request indicating the potential memory requirement from a Host Memory Buffer (HMB) of the host device;
• receive a plurality of memory allocation slots from the host device based on the first request;
• transmit a second request comprising HMB information related to current memory requirement to dynamically use the plurality of memory allocation slots to the host device;
• and
• initialize a memory of the HMB allocated to the controller based on the second request, for performing the at least one of the one or more memory intensive operations,
• wherein the HMB information comprises:
• a first information indicating whether a first slot allocated by the host device, among the plurality of memory allocation slots, is enabled, and
• a second information indicating whether the first slot allocated by the host device, among the plurality of memory allocation slots, is in use.