International Business Machines Corporation

Kenneth Roger Allen

Kenneth Charles Vossen

Wade Byron Ouren

Patrick Joseph McCarthy

Richard Karl Kirkman

Stuart Zachary Jacobs

William Anton Brown

Wade Bryon Ouren

Rebecca N B Legler

Evaluating memory allocation in a multi-node computer including calculating, in dependence upon a normalized measure of page frame demand, a weighted coefficient of memory affinity, the weighted coefficient representing desirability of allocating memory from the node, and allocating memory may include allocating memory in dependence upon the weighted coefficient of memory affinity.

Memory allocation in a multi-node computer

Methods, systems, and media for managing dynamic memory are disclosed. Embodiments may disclose identifying nodes with having memory for dynamic storage, and reserving a portion of the memory from the identified nodes for a heap pool. After generating a heap pool, embodiments may allocate dynamic storage from the heap pool to tasks received that are associated with one of the identified nodes. More specifically, embodiments identify the node or home node associated with the task, the amount of dynamic storage requested by the task, and create a heap object in the node associated with the task to provide the requested dynamic storage. Some embodiments involve de-allocating the dynamic storage assigned to the task upon receipt of an indication that the task is complete and the dynamic storage is no longer needed for the task. Several of such embodiments return the de-allocated dynamic storage to the heap pool for reuse.

Methods, systems, and media for managing dynamic storage

In a computer system that includes multiple nodes and multiple logical partitions, a dynamic partition manager computes current memory affinity and potential memory affinity at the request of a logical partition to help the logical partition determine whether a reallocation of resources between nodes may improve memory affinity for the logical partition. If so, the logical partition requests reallocation of resources by the dynamic partition manager so memory affinity for the logical partition is improved.

Dynamically improving memory affinity of logical partitions

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Rochester, MN, United States of America

Kenneth Roger Allen