DYNAMIC OPTIMIZATION OF COMMAND ISSUANCE IN A COMPUTING CLUSTER

• US 20140032628A1
• Filed: 07/24/2012
• Published: 01/30/2014
• Est. Priority Date: 07/24/2012
• Status: Active Grant

• Current Assignee: Lenovo International Limited (Lenovo Group Ltd.)
• Original Assignee: International Business Machines Corporation
• Inventors: Cudak, Gary D., Hardee, Christopher J., Humes, Randall C., Roberts, Adam, Suffern, Edward S.
• Granted Patent: US 9,350,633 B2
• Time in Patent Office: Days
• US Class Current: 709/201
• CPC Class Codes: H04L 41/0823 characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for optimising operational conditions of wireless networks H04W24/02
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 43/0852 Delays

Abstract

Embodiments of the present invention provide a method, system and computer program product for dynamic optimization of command sequencing in a computing cluster. In an embodiment of the invention, a method for dynamic optimization of command sequencing in a computing cluster can include selecting a set of nodes in the computing cluster to receive a single command and probing the nodes of the set to compute a computer communications latency for each of the nodes. Thereafter, the single command can be transmitted to the nodes in the set according to a sequence determined by the computed computer communications latency for each of the nodes.

Claims

1. A method for dynamic optimization of command sequencing in a computing cluster, the method comprising:

selecting a set of nodes in the computing cluster to receive a single command;

probing the nodes of the set to compute a computer communications latency for each of the nodes; and

,

transmitting the single command to the nodes in the set according to a sequence determined by the computed computer communications latency for each of the nodes.

2. The method of claim 1, wherein the nodes are probed using a ping directive to each of the nodes.

3. The method of claim 2, wherein the computed computer communications latency accounts for a time consumed in sending data to the nodes using the ping directive.

4. The method of claim 1, wherein the nodes are probed using a traceroute directive to each of the nodes.

5. The method of claim 4, wherein the computed computer communications latency accounts for a number of hops necessary to reach each of the nodes using the traceroute directive.

6. The method of claim 1, wherein the nodes are probed with a test directive and the computed computer communications latency accounts for a period of time consumed by the nodes to each complete performance of the test directive.

7. The method of claim 1, wherein the sequence is managed within a data structure of nodes sorted according to the computed computer communications latency for each of the nodes.

8. A clustered computing system configured for dynamic optimization of command sequencing, the system comprising:

a plurality of computers, each comprising memory and at least one processor, each coupled to the other over a computer communications network;

multiple different nodes each supported by one or more of the computers and forming a computing cluster; and

,

a command sequencer executing in memory of one of the computers in association with an originating one of the nodes, the sequencer comprising program code enabled to select a set of the nodes to receive a single command, to probe the nodes of the set to compute a computer communications latency for each of the nodes, and to transmit the single command to the nodes in the set according to a sequence determined by the computed computer communications latency for each of the nodes.

9. The system of claim 8, wherein the nodes are probed using a ping directive to each of the nodes.

10. The system of claim 9, wherein the computed computer communications latency accounts for a time consumed in sending data to the nodes using the ping directive.

11. The system of claim 8, wherein the nodes are probed using a traceroute directive to each of the nodes.

12. The system of claim 11, wherein the computed computer communications latency accounts for a number of hops necessary to reach each of the nodes using the traceroute directive.

13. The system of claim 8, wherein the nodes are probed with a test directive and the computed computer communications latency accounts for a period of time consumed by the nodes to each complete performance of the test directive.

14. The system of claim 8, wherein the sequence is managed within a data structure of nodes sorted according to the computed computer communications latency for each of the nodes.

15. A computer program product for dynamic optimization of command sequencing in a computing cluster, the computer program product comprising:

a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising;

computer readable program code for selecting a set of nodes in the computing cluster to receive a single command;

computer readable program code for probing the nodes of the set to compute a computer communications latency for each of the nodes; and

,

computer readable program code for transmitting the single command to the nodes in the set according to a sequence determined by the computed computer communications latency for each of the nodes.

16. The computer program product of claim 15, wherein the nodes are probed using a ping directive to each of the nodes.

17. The computer program product of claim 16, wherein the computed computer communications latency accounts for a time consumed in sending data to the nodes using the ping directive.

18. The computer program product of claim 15, wherein the nodes are probed using a traceroute directive to each of the nodes.

19. The computer program product of claim 18, wherein the computed computer communications latency accounts for a number of hops necessary to reach each of the nodes using the traceroute directive.

20. The computer program product of claim 15, wherein the nodes are probed with a test directive and the computed computer communications latency accounts for a period of time consumed by the nodes to each complete performance of the test directive.

21. The computer program product of claim 15, wherein the sequence is managed within a data structure of nodes sorted according to the computed computer communications latency for each of the nodes.