Configuration Management for ultiAgent Systems via …配置管理的多Agent系統(tǒng)通過…

1、joseph a. giampapaoctavio h. juarez-espinosa katia p. sycarathe robotics institutecarnegie mellon university5000 forbes avenuepittsburgh, pa 15213-3890 (usa)/garof, ojuarez, katia, softagentsthis research has been sponsored in part by darpa grant f-30602-98-2-0138 and the office

2、of naval research grant n-00014-96-16-1-1222.configuration management for multi-agent systemsvia recoma: the retsina configuration managerresearch problems addressed the connection problem: given: open, dynamic, heterogeneous, networked computing environment find: the computer with the resources tha

3、t match the agents requirements solve: via dynamic service discovery and agent matchmaking techniques difficulties of managing change: heterogeneous operating environments different: operating systems, computer languages, device characteristics availability, load, resource limits of the hosting comp

4、uter runtime status of the agents desiderata from the agent administrators perspective: single point of control distributed points of control: control from any computer uniform control of different agent systems (e.g. retsina, oaa, grid) uniform control of non-agent componentsrecoma architecturereco

5、ma serverrecoma serverrecoma serverrecoma clientxmlxmldiscovery one per computer loaded during host computers startup provides a profile of host computers resources announces itself and host computer via ssdp alive packets acts on requests to launch agents via platform-specific commandsrecoma server

6、recoma client one per user loaded whenever / wherever neededrecoma order independence for startup and discoveryrecoma clientrecoma serverans servermatchmakersearch requestsearch requestsearch requestsearch responsesearch responsesearch responsesearch alivesearch alivesearch aliveagent selection indi

7、vidual agent / component profiles can be edited from recoma client agent profile specifies type of execution environment example: jdk1.2.2 green threads; or x11r6; or linux.ld.so.114a recoma client determines where to find resources on the host computer example: jdk1.2.2 on midea found in /usr/home/

8、java/jdk1.2.2machine selectionvisually illustrates allocation constraints given a computer, show the agents / components that can it run given an agent, show the computers on which it can be runrecoma host profilea host profile is provided by the recoma server for its host host profiles can contain

9、arbitrary descriptions of their platforms host profiles contain host computer-specific descriptions examples: operating system, file locations, libraries locations, etc.recoma agent profileencodes platform-independent host requirements for the agent examples: operating system; language; shared libra

10、ries does not encode the specific instances, such as filename pathsencodes application-independent dependency requirements examples: requires that a non-discoverable ans be running does not specify that a particular ans instance be runningrecoma application profileinstantiates agents, on host comput

11、ers, for a specific mas application.recoma helps to manage mas applicationsthe user can see the applications for which an agent is being used. allows startup/shutdown of all agents for an application. if agent is being used for multiple applications, only the reference to the application being termi

12、nated is removed.recoma agent / component launch sequencerecomaclientrecomaserverlaunch requestlaunchagentlaunch statusagent /componentit is possible to launch agent and non-agent components with recoma.recoma facilitates monitoring and control of mas applicationsrecoma can discover any ssdp-enabled

13、 sw component in the discovery area: retsina: anss, matchmakers, logging & visualization facilities, ssdp-enabled agents jini / darpa grid: luss, ssdp-enabled agents windows millenium: ssdp-enabled servicesrecoma facilitates monitoring and control mas applicationsrecoma implements fipa agent con

14、trol language agent control language is optional for agents under recoma management. recoma fipa control language wrapper for agents / components that do not implement fipa cl.conclusions recoma provides for the user: control of retsina agents, non-retsina agents, non-agent components centralized co

15、ntrol, from any computer, of a distributed environment control across heterogeneous platforms (e.g. any unix; any windows) knowledge and control of a dynamically-changing computing environment gui to facilitate intuitive resolution of agent-computer allocation gui to track allocations of agents to applications and to resources ad hoc specification of host, agent, and application profi