Pooled memory controller for thin-provisioning disaggregated memory

A method of thin-provisioning memory for a multi-node computer system, the method comprising:

• assigning, to each compute node of a plurality of compute nodes, a portion of a disaggregated memory pool configured to provide a shared memory capacity to the plurality of compute nodes, such that a currently assigned total of assigned portions of the disaggregated memory pool is less than the shared memory capacity;
• receiving a request to assign an additional portion of the disaggregated memory pool to a requesting compute node of the compute nodes, such that the currently assigned total and the additional portion would exceed a predefined threshold amount of the shared memory capacity;
• un-assigning an assigned portion of the disaggregated memory pool;
• and
• assigning the additional portion of the disaggregated memory pool to the requesting compute node to satisfy the request.

A thin-provisioned multi-node computer system, comprising:

• a plurality of compute nodes, wherein each compute node has a native memory providing a native memory capacity;
• a disaggregated memory pool configured to make a shared memory capacity available to each of the plurality of compute nodes;
• and
• a pooled memory controller configured to:
• assign, to each compute node of the plurality of compute nodes, a portion of the disaggregated memory pool such that a currently assigned total of assigned portions of the disaggregated memory pool is less than the shared memory capacity;
• receive a request to assign an additional portion of the disaggregated memory pool to a requesting compute node of the compute nodes, such that the currently assigned total and the additional portion would exceed a predefined threshold amount of the shared memory capacity;
• un-assign an assigned portion of the disaggregated memory pool;
• and
• assign the additional portion of the disaggregated memory pool to the requesting compute node to satisfy the request.