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US5097412A
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Method for simulating the operation of programs in a distributed processing system
Assignee: Hitachi Ltd
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Filing: 1988-04-21
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Granted: 1992-03-17
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Expires: 2008-04-21
Abstract
Abstract In a distributed processing system wherein a plurality of processors are connected by a transmission medium; a simulation method for a distributed processing system characterized by defining transmission delay times ascribable to the transmission medium, input/output data items and processing times of respective programs which are set in the system, and numbers of the processors in which the programs are stored.
Inventors
- 👤 Masayuki Orimo
- 👤 Kinji Mori
- 👤 Yasuo Suzuki
- 👤 Katsumi Kawano
- 👤 Minoru Koizumi
- 👤 Kozo Nakai
- 👤 Hirokazu Kasahima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:55
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/30; G06F11/34; G06F11/36; G06F11/3698
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A method for simulating processing of a multiple of program modules in a distributed processing system including a plurality of processors, an input-output device and a memory, comprising the steps of: storing in said memory a table including information relating to input/output data and processing time of each program module and information of a processor in which each program module is processed; inputting input/output data and processing time of a program module to be simulated from said input/output device to a processor; producing, at said processor, a system flow diagram including said multiple of program modules, said system flow diagram defining an interrelational order of said multiple of program modules based on said input/output data; evaluating, at said processor, processing time of processings defined by said system flow diagram based on processing times of respective program modules included in said system flow diagram; and outputting a result of said evaluating step.
Claim 2
Independent Claim
151 words
A method for simulating processing of a multiple of program modules in a distributed processing system including a plurality of processors, an input-output device and a memory, comprising the steps of: storing in said memory a table including information relating to input/output data and processing time of each program module and information of a processor in which each program module is processed; inputting input/output data and processing time of a program module to be simulated from said input/output device to a processor; producing, at said processor, a system flow diagram including said multiple of program modules, said system flow diagram defining an interrelational order of said multiple of program modules based on said input/output data; evaluating, at said processor, processing time of processings defined by said system flow diagram based on processing times of respective program modules included in said system flow diagram; and outputting a result of said evaluating step.
Claim 3
Independent Claim
163 words
A method for simulating processing of a multiple of program modules in a distributed system including a plurality of processors, an input/output device and a memory in which said multiple of program modules are distributed, comprising the steps of: storing in said memory a table including information relating to input/output data and processing time of each program module and information of a processor in which each program module is processed; inputting input/output data and processing time of a program module to be simulated from said input/output device to a processor; producing, at said processor, a system flow diagram including said multiple of program modules, said system flow diagram defining an interrelational order of said multiple of program modules based on said input/output data; evaluating, at said processor, performance of the system based on processing time of respective program modules having said interrelational order of said multiple of program modules defined by said system flow diagram; and outputting a result of said evaluating step.
Claim 4
Independent Claim
163 words
A method for simulating processing of a multiple of program modules in a distributed system including a plurality of processors, an input/output device and a memory in which said multiple of program modules are distributed, comprising the steps of: storing in said memory a table including information relating to input/output data and processing time of each program module and information of a processor in which each program module is processed; inputting input/output data and processing time of a program module to be simulated from said input/output device to a processor; producing, at said processor, a system flow diagram including said multiple of program modules, said system flow diagram defining an interrelational order of said multiple of program modules based on said input/output data; evaluating, at said processor, performance of the system based on processing time of respective program modules having said interrelational order of said multiple of program modules defined by said system flow diagram; and outputting a result of said evaluating step.
Claim 5
Dependent Claim
33 words
A simulation method as defined in claim 1 or 2, wherein said system flow diagram is used for evaluating performance of said system and is prepared on the basis of said input/output data.
Claim 6
Dependent Claim
26 words
A simulation method as defined in claims 1 or 2 wherein: said input/output data and said processing time are inputted for each of the program modules.
Claim 7
Dependent Claim
42 words
A simulation method as defined in claims 1 or 2, wherein: for respective program modules in said system, information items of input/output data, processing times of the program modules and numbers of processors in which the program modules are stored are defined.
Claim 8
Dependent Claim
24 words
A simulation method as defined in claim 5, wherein a performance of said system is evaluated on the basis of the defined information items.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |