Method and system for data processing system error diagnosis utilizing hierarchical blackboard diagnostic sessions

• US 5,448,722 A
• Filed: 03/10/1993
• Issued: 09/05/1995
• Est. Priority Date: 03/10/1993
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Walker, Thomas M., Lynne, Kenton J., Samra, Nicholas
• Primary Examiner(s): Beausoliel, Jr., Robert W.
• Assistant Examiner(s): Wright, Norman M.
• Application Number:
  US08/029,072
• Time in Patent Office: 909 Days
• Field of Search: 395/575, 395/50, 395/51, 395/52, 395/53, 395/10, 371/15.1, 371/23, 371/22.1, 364/513
• US Class Current: 706/49
• CPC Class Codes: G06F 11/2273 Test methods

Abstract

A method and system in a data processing system for managing a hierarchical error diagnostic system having a plurality of diagnostic modules for diagnosing a component failure within a target system having a predetermined group of components within each of a plurality of hierarchical levels. After the identification of selected hierarchical levels within the target system, and identification of the components within each hierarchical level, a first blackboard data storage area is initialized for utilization during a diagnostic session. Thereafter, a diagnostic analysis of a first predetermined group of components within a first selected hierarchical level is initiated. The diagnostic analysis utilizes the first blackboard data storage area and multiple diagnostic modules assigned to diagnose the components within the first selected hierarchical level. Upon conclusion of the diagnostic analysis, a diagnostic result is determined from selected information learned during the first diagnostic analysis. In preparation for a second diagnostic analysis of a second group of components in a second hierarchical level, which were selected in response to a result from the initial diagnostic analysis, a second blackboard data storage area is initialized utilizing selected information learned from the initial diagnostic analysis. Thereafter, a second diagnostic analysis of a second predetermined group of components within a second selected hierarchical level is automatically initiated. The second diagnostic analysis utilizes selected information learned during the initial diagnostic session, which is stored within the second blackboard data storage area during initialization, and multiple diagnostic modules within the second selected hierarchical level.

Claims

1. A method for managing a hierarchical error diagnostic system having a plurality of diagnostic modules for diagnosing a component failure within a target system having a predetermined group of components within each of a plurality of hierarchical levels, said method comprising the data processing system implemented steps of:

initializing a first blackboard data storage area;

initiating a first diagnostic analysis of a first predetermined group of components within a first selected hierarchical level utilizing said first blackboard data storage area and a first plurality of diagnostic modules within said first selected hierarchical level;

determining a diagnostic result and selected information in response to said first diagnostic analysis;

initializing a second blackboard data storage area utilizing said diagnostic result and selected information determined from said first diagnostic analysis of a first predetermined group of components within said first selected hierarchical level;

automatically initiating a second diagnostic analysis of a second predetermined group of components within a second selected hierarchical level, wherein said second predetermined group of components is identified utilizing said diagnostic result, utilizing said selected information within said second blackboard data storage area and a plurality of diagnostic modules within said second selected hierarchical level, wherein diagnosis may be efficiently managed utilizing a plurality of diagnostic modules which transfer selected information between a plurality of hierarchical levels utilizing a plurality of blackboard data storage areas.

2. The method for managing a hierarchical error diagnostic system according to claim 1, wherein said step of initializing a second blackboard data storage area utilizing said diagnostic result and selected information determined from said first diagnostic analysis of a first predetermined group of components within said first selected hierarchical level further includes the steps of:

storing selected information learned by each of said plurality of diagnostic modules in a global information table; and

permitting access, by other diagnostic modules within any of said plurality of hierarchical levels, to said selected information within said global information table.

3. The method for managing a hierarchical error diagnostic system according to claim 1, wherein said step of initializing a second blackboard data storage area utilizing said diagnostic result and selected information determined from said first diagnostic analysis of a first predetermined group of components within said first selected hierarchical level further includes the steps of:

storing selected information learned by each of said plurality of diagnostic modules in a component information table reserved for said selected one of said predetermined group of components; and

permitting access, by other diagnostic modules within selected hierarchical levels, to said selected information within said component information table.

4. The method for managing a hierarchical error diagnostic system according to claim 1, wherein said step of determining a diagnostic result in response to said first diagnostic analysis further includes the steps of:

calculating a plurality of confidence factors to be associated with each of said diagnostic modules and based upon a previously demonstrated ability to diagnose a failure of one of said predetermined group of components;

compiling data provided by said diagnostic modules in response to said diagnostic analysis;

processing said compiled data provided by said diagnostic modules utilizing said confidence factors associated with each of said diagnostic modules; and

calculating a probability of failure for each of said components within said first predetermined group of components utilizing said processed compiled data.

5. The method for managing a hierarchical error diagnostic system according to claim 4, further including the steps of:

displaying said calculated probability of failure for each of said components within said first predetermined group of components;

permitting a user to select said second predetermined group of components, within said second hierarchical level, in response to said display of said calculated probability of failure for each of said components within said first predetermined group of components; and

automatically initiating a second diagnostic analysis of said user selected second predetermined group of components within a second selected hierarchical level utilizing said selected information within said second blackboard data storage area and a plurality of diagnostic modules within said second selected hierarchical level.

6. The method for managing a hierarchical error diagnostic system according to claim 1, wherein said step of initiating a first diagnostic analysis of a first predetermined group of components within a first selected hierarchical level utilizing said first blackboard data storage area and a first plurality of diagnostic modules within said first selected hierarchical level comprises initiating a first diagnostic analysis utilizing artificially intelligent diagnostic modules for performing diagnostic analysis.

7. A system for managing a hierarchical error diagnostic system having a plurality of diagnostic modules for diagnosing a component failure within a target system having a predetermined group of components within each of a plurality of hierarchical levels comprising:

means for initializing a first blackboard data storage area;

means for initiating a first diagnostic analysis of a first predetermined group of components within a first selected hierarchical level utilizing said first blackboard data storage area and a first plurality of diagnostic modules within said first selected hierarchical level;

means for determining a diagnostic result and selected information in response to said first diagnostic analysis;

means for initializing a second blackboard data storage area utilizing said diagnostic result and selected information determined from said first diagnostic analysis of a first predetermined group of components within said first selected hierarchical level;

means for automatically initiating a second diagnostic analysis of a second predetermined group of components within a second selected hierarchical level, wherein said second predetermined group of components is identified utilizing said diagnostic result, utilizing said selected information within said second blackboard data storage area and a plurality of diagnostic modules within said second selected hierarchical level, wherein diagnosis may be efficiently managed utilizing a plurality of diagnostic modules which transfer selected information between a plurality of hierarchical levels utilizing a plurality of blackboard data storage areas.

8. The system for managing a hierarchical error diagnostic system according to claim 7, wherein said means for initializing a second blackboard data storage area utilizing said diagnostic result and selected information determined from said first diagnostic analysis of a first predetermined group of components within said first selected hierarchical level further includes:

means for storing selected information learned by each of said plurality of diagnostic modules in a global information table; and

means for permitting access, by other diagnostic modules within any of said plurality of hierarchical levels, to said selected information within said global information table.

9. The system for managing a hierarchical error diagnostic system according to claim 7, wherein said means for initializing a second blackboard data storage area utilizing said diagnostic result and selected information determined from said first diagnostic analysis of a first predetermined group of components within said first selected hierarchical level further includes:

means for storing selected information learned by each of said plurality of diagnostic modules in a component information table reserved for said selected one of said predetermined group of components; and

means for permitting access, by other diagnostic modules within selected hierarchical levels, to said selected information within said component information table.

10. The system for managing a hierarchical error diagnostic system according to claim 7, wherein said means for determining a diagnostic result in response to said first diagnostic analysis further includes:

means for calculating a plurality of confidence factors to be associated with each of said diagnostic modules and based upon a previously demonstrated ability to diagnose a failure of one of said predetermined group of components;

means for compiling data provided by said diagnostic modules in response to said diagnostic analysis;

means for processing said compiled data provided by said diagnostic modules utilizing said confidence factors associated with each of said diagnostic modules; and

means for calculating a probability of failure for each of said components within said first predetermined group of components utilizing said processed compiled data.

11. The system for managing a hierarchical error diagnostic system according to claim 10, further including:

means for displaying said calculated probability of failure for each of said components within said first predetermined group of components;

means for permitting a user to select said second predetermined group of components, within said second hierarchical level, in response to said display of said calculated probability of failure for each of said components within said first predetermined group of components; and

means for automatically initiating a second diagnostic analysis of said user selected second predetermined group of components within a second selected hierarchical level utilizing said selected information within said second blackboard data storage area and a plurality of diagnostic modules within said second selected hierarchical level.

12. The system for managing a hierarchical error diagnostic system according to claim 7, wherein said means for initiating a first diagnostic analysis of a first predetermined group of components within a first selected hierarchical level utilizing said first blackboard data storage area and a first plurality of diagnostic modules within said first selected hierarchical level comprises means for initiating a first diagnostic analysis utilizing artificially intelligent diagnostic modules for performing diagnostic analysis.