NETWORK SYSTEM AND INFORMATION PROCESSING METHOD

• US 20080040512A1
• Filed: 08/07/2007
• Published: 02/14/2008
• Est. Priority Date: 08/10/2006
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: OKAMURA, Kanna, NAKAYAMA, Koichiro, TAMURA, Hiroki
• Granted Patent: US 7,788,379 B2
• Time in Patent Office: Days
• US Class Current: 709/251
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

A network system is composed of a plurality of information processing apparatuses connected to a ring network, and a program, which is to be executed by sharing the resources of the information processing apparatuses, is divided into predetermined units and stored in a plurality of information processing apparatuses, where an information processing apparatus determines whether all pieces of the divided program have been stored in the memory; when there is a program which has not been stored, transmits to another information processing apparatus a transmission request for the program; determines whether a program received by a communication section is the program transmitted from another information processing apparatus in response to the transmission request; stores the received program in the memory when it is transmitted in response to the transmission request; and executes the program stored in the memory when all pieces of the divided program have been stored.

Claims

1. A network system comprising:

a plurality of information processing apparatuses, each having a memory and a communication section and being connected to a ring network through the communication section, wherein

a program, which is to be executed by sharing a resource of each of the information processing apparatuses, is divided into predetermined units and stored in a plurality of information processing apparatuses, and wherein

one information processing apparatus comprises a processor capable of performing operations of;

determining whether or not all pieces of the divided program have been stored in the memory;

transmitting through the communication section to another information processing apparatus a transmission request for the program which has not been stored, when a determination is made that there is a program which has not been stored in the memory;

determining whether or not a program received by the communication section is a program transmitted from said another information processing apparatus in response to the transmission request;

storing the program received by the communication section in the memory when a determination is made that the received program is the program transmitted in response to the transmission request; and

executing the program stored in the memory, when a determination is made that all pieces of the divided program have been stored in the memory.

2. The network system according to claim 1, wherein the divided program is stored redundantly in a plurality of information processing apparatuses.

3. The network system according to claim 2, wherein a priority level for responding to the transmission request is assigned to each program stored redundantly in a plurality of information processing apparatuses, and

said another information processing apparatus transmits the program according to the priority level.

4. The network system according to claim 1, wherein the memory of each information processing apparatus is sharable by a plurality of information processing apparatuses, and information about available memory capacity which is required when executing the program is stored in said plurality of information processing apparatuses, wherein

said processor is further capable of performing operations of:

determining whether or not an available memory capacity of said one information processing apparatus is smaller than the stored available memory capacity;

transmitting a memory use request to other information processing apparatuses through the communication section when a determination is made that the available memory capacity of said one information processing apparatus is smaller than the stored available memory capacity; and

using the memories of other information processing apparatuses in the descending order of the available memory capacity thereof, based on the received information about available memory capacity when information about available memory capacity transmitted from other information processing apparatuses is received.

5. A network system comprising:

a plurality of information processing apparatuses, each having a memory and communication means and being connected to a ring network through the communication means, wherein

a program, which is to be executed by sharing a resource of each of the information processing apparatuses, is divided into predetermined units and stored in a plurality of information processing apparatuses, and wherein

one information processing apparatus comprises;

means for determining whether or not all pieces of the divided program have been stored in the memory;

means for, when a determination is made that there is a program which has not been stored in the memory, transmitting through the communication means to another information processing apparatus a transmission request for the program which has not been stored;

means for determining whether or not a program received by the communication means is a program transmitted from said another information processing apparatus in response to the transmission request;

means for, when a determination is made that the received program is the program transmitted in response to the transmission request, storing the program received by said communication means in the memory; and

means for, when a determination is made that all pieces of the divided program have been stored in the memory, executing the program stored in the memory.

6. The network system according to claim 5, wherein the divided program is stored redundantly in a plurality of information processing apparatuses.

7. The network system according to claim 6, wherein a priority level for responding to the transmission request is assigned to each program stored redundantly in a plurality of information processing apparatuses, and

said another information processing apparatus transmits the program according to the priority level.

8. The network system according to claim 5, wherein the memory of each information processing apparatus is sharable by a plurality of information processing apparatuses, and information about available memory capacity which is required when executing the program is stored in said plurality of information processing apparatuses, wherein

said one information processing apparatus further comprises:

means for determining whether or not an available memory capacity of the one information processing apparatus is smaller than the stored available memory capacity;

means for, when a determination is made that the available memory capacity of the one information processing apparatus is smaller than the stored available memory capacity, transmitting a memory use request to other information processing apparatuses through the communication means; and

means for receiving information about available memory capacity transmitted from other information processing apparatuses, and

wherein the memories of other information processing apparatuses are used as a shared memory in the descending order of the available memory capacity thereof, based on the received information about available memory capacity.

9. An information processing method, which uses a network composed of a plurality of information processing apparatuses connected in a ring form and shares a resource of each of the information processing apparatuses, comprising the steps of:

storing a program to be executed, which is divided into predetermined units, in a plurality of information processing apparatuses, and

causing one information processing apparatus to

determine whether or not all pieces of the divided program have been stored;

transmit to another information processing apparatus a transmission request for a program which has not been stored when a determination is made that all pieces of the divided program have not been stored;

determine whether or not a program received from another information processing apparatus is a program corresponding to the transmission request;

store the received program when a determination is made that the received program is the program corresponding to the transmission request; and

execute the program to be executed when a determination is made that all pieces of the divided program have been stored.

10. An information processing method according to claim 9, wherein a memory of each information processing apparatus is sharable by a plurality of information processing apparatuses, and information about available memory capacity which is required when executing the program is stored in said plurality of information processing apparatuses, wherein

said one information processing apparatus

determines whether or not an available memory capacity of the one information processing apparatus is smaller than the stored available memory capacity;

transmits a memory use request to another information processing apparatus when a determination is made that the available memory capacity of the one information processing apparatus is smaller than the stored available memory capacity;

receives information about available memory capacity transmitted from other information processing apparatuses; and

uses the memories of other information processing apparatuses as a shared memory in the descending order of the available memory capacity thereof, based on the received information about available memory capacity.