International Business Machines Corporation

Nicholas Bruce Goracke

Daniel Paul Kolz

Jay Symmes Bryant

Dharmesh J Patel

Embodiments of the invention provides techniques for defragmenting blocks of resources allocated to perform computing jobs on a distributed or clustered system so that more contiguous physical resources may be made available to users submitting new job requests. Typically, the defragmentation process is performed when a job is submitted that requires access to a computing block that is larger than any currently available block in the parallel computing system.

Defragmenting blocks in a clustered or distributed computing system

A memory management mechanism a nodal having multiple processors in a massively parallel computer system dynamically configures nodal memory on demand. A respective variable-sized subdivision of nodal memory is associated with each processor in the node. A processor may request additional memory, and the other processor(s) may grant or veto the request. If granted, the requested memory is added to the subdivision of the requesting processor. A processor can only access memory within its own subdivision. Preferably, each subdivision contains a daemon which monitors memory usage and generates requests for additional memory.

Memory request/grant daemons in virtual nodes for moving subdivided local memory space from VN to VN in nodes of a massively parallel computer system

Memory request / grant daemons in virtual nodes for moving subdivided local memory space from VN to VN in nodes of a massively parallel computer system

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Rochester, MN, United States of America

Nicholas Bruce Goracke