Process assignment by nodal affinity in a myultiprocessor system having non-uniform memory access storage architecture

• US 5,784,697 A
• Filed: 03/27/1996
• Issued: 07/21/1998
• Est. Priority Date: 03/27/1996
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Smet, Arthur Douglas, Petrillo, Robert Anthony, McMains, Larry Keith, Torzewski, Timothy Joseph, Funk, Mark Robert, Seemann, Robert Carl, Morrison, Donald Arthur
• Primary Examiner(s): Chan, Eddie P.
• Assistant Examiner(s): Ellis, Kevin L.
• Application Number:
  US08/622,230
• Time in Patent Office: 846 Days
• Field of Search: 395/672, 395/674, 395/474, 395/475, 395/670, 395/675, 395/676, 711/147, 711/148, 711/170
• US Class Current: 711/170
• CPC Class Codes: G06F 12/023 Free address space management
• CPC Class Codes: G06F 12/0284 Multiple user address space allocation, e.g. using different base addresses interprocessor communication G06F15/163
• CPC Class Codes: G06F 9/5016 the resource being the memory

Abstract

According to the present invention, pool allocation and process assignment mechanisms create process nodal affinity in a NUMA multiprocessor system for enhanced performance. The multiprocessor system includes multiple interconnected multiprocessing nodes that each contain one or more processors and a local main memory, the system main storage being distributed among the local main memories of the multiprocessing nodes in a NUMA architecture. A pool reservation mechanism reserves pools of memory space within the logical main storage, and the pool allocation mechanism allocates those pools to real pages in the local main-memory of multiprocessing nodes. Processes to be created on the multiprocessor are given an attribute that indicates an associated pool. Upon creation, the process assignment mechanism will only assign a process to a multiprocessing node that has been allocated the pool indicated by the process'"'"' attribute. This process nodal affinity increases accesses by the assigned process to local main storage of that node, thereby enhancing system performance.

Claims

1. A method of process assignment in a multiprocessor system having non-uniform memory access storage architecture, the multiprocessor system having multiple interconnected multiprocessing nodes and a main storage distributed among the multiprocessing nodes, wherein each multiprocessing node contains one or more processors and a local main memory, the method comprising the steps of:

dynamically reserving a pool of memory space within the main storage during operation of said multiprocessor system;

allocating the reserved pool of memory space to one or more multiprocessing nodes among the multiple multiprocessing nodes; and

following allocation of said reserved pool of memory space to said one or more multiprocessing nodes, assigning a process associated with the pool of memory space to a multiprocessing node allocated that pool of memory space such that accesses to local main memory are increased and system performance is enhanced.

2. A method of process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 1, wherein processes are given an attribute indicating the pool associated with the process.

3. A method of process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 1, wherein a portion of memory is acquired by a process from the associated pool within the process'"'"' assigned node.

4. A method of process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 1, further comprising allocating the pool of memory space to two or more multiprocessing nodes of the plurality of multiprocessing nodes such that the pool of memory space comprises memory space within the local main memory of the two or more multiprocessing nodes.

5. A method of process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 4, wherein the process is assigned to a particular multiprocessing node among the two or more multiprocessing nodes as a function of utilization of said pool of memory space by each multiprocessing node.

6. A multiprocessor system of non-uniform memory access storage architecture, the multiprocessor system comprising:

a plurality of interconnected multiprocessing nodes, wherein each multiprocessing node among the plurality of multiprocessing nodes contains one or more processors and a local main memory;

main storage distributed among the multiprocessing nodes in a non-uniform memory access storage architecture such that the main storage includes the local main memories of the plurality of interconnected multiprocessing nodes, and wherein each local main memory is accessible by each processor among the plurality of interconnected multiprocessing nodes;

a pool reservation mechanism that dynamically reserves one or more pools of memory space within the main storage during operation of the multiprocessor system;

a pool allocation mechanism that allocates a reserved pool of memory space to one or more multiprocessing nodes among the plurality of interconnected multiprocessing nodes; and

a process assignment mechanism that, following allocation of said reserved pool of memory space to said one or more multiprocessing nodes, assigns a process associated with said reserved pool of memory space to a multiprocessing node allocated that pool of memory space.

7. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, wherein processes are given an attribute indicating the pool associated with the process.

8. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, wherein a portion of memory is acquired by a process from the associated pool within the process'"'"' assigned node.

9. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, wherein the pool reservation mechanism is software stored in the main storage and executed within the plurality of interconnected multiprocessing nodes.

10. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, wherein the pool allocation mechanism is software stored in the main storage and executed within the plurality of interconnected multiprocessing nodes.

11. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, wherein the process assignment mechanism is software stored in the main storage and executed within the plurality of interconnected multiprocessing nodes.

12. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, further wherein the process assignment mechanism assigns each of a plurality of processes that accesses the pool to a multiprocessing node allocated that pool.

13. A multiprocessor system of non-uniform memory access storage architecture according to claim 6, further wherein the pool allocation mechanism allocates the pool of memory space to two or more multiprocessing nodes of the plurality of multiprocessing nodes such that the pool of memory space comprises memory space within the local main memories of the two or more multiprocessing nodes.

14. A multiprocessor system of non-uniform memory access storage architecture according to claim 13, wherein the process is assigned to a particular multiprocessing node among the two or more multiprocessing nodes as a function of utilization of said pool of memory space by each multiprocessing node.

15. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture, wherein the multiprocessor system has multiple interconnected multiprocessing nodes, each multiprocessing node containing one or more processors and a local main memory, and a main storage distributed among the local main memories, the program product comprising:

a pool reservation mechanism that dynamically reserves one or more pools of memory space within the main storage during operation of the multiprocessor system;

a pool allocation mechanism that allocates a reserved pool of memory space to one or more multiprocessing nodes among the plurality of interconnected multiprocessing nodes;

a process assignment mechanism that, following allocation of said reserved pool of memory space to said one or more multiprocessing nodes, assigns is a process associated with said reserved pool of memory space to a multiprocessing node allocated that pool of memory space; and

signal bearing media bearing the pool reservation mechanism, the pool allocation mechanism, and the process assignment mechanism.

16. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 15, wherein processes are given an attribute indicating the pool associated with the process.

17. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 15, wherein a portion of memory is acquired for a process from the associated pool within the process'"'"' assigned node.

18. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 15, further wherein the process assignment mechanism assigns each of a plurality of processes that accesses the pool to a multiprocessing node allocated that pool.

19. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 15, wherein the signal bearing media comprises recordable media.

20. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 15, wherein the signal bearing media comprises transmission media.

21. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 15, further wherein the pool allocation mechanism allocates the pool of memory space to two or more multiprocessing nodes of the plurality of multiprocessing nodes such that the pool of memory space comprises memory space within the local main memory of the two or more multiprocessing nodes.

22. A program product providing process assignment in a multiprocessor system having non-uniform memory access storage architecture according to claim 21, wherein the process is assigned to a particular multiprocessing node among the two or more multiprocessing nodes as a function of utilization of said pool of memory by each multiprocessing node.