Information processing device, access controller, information processing method, and computer program for issuing access requests from a processor to a sub-processor

A non-transitory computer readable medium having stored thereon a program that, when executed by an apparatus, causes the apparatus to perform a method, the method comprising:

• causing a main processor of the apparatus to issue an access request to access a file stored in a secondary storage,
• wherein the access request is received at the main processor from an application program;
• causing a sub-processor of the apparatus, that is coupled with the main processor via a bus, to:
• receive the access request,
• divide the access request into a plurality of secondary access requests,
• issue the secondary access requests to access data blocks formed by dividing the file, and
• notify the main processor of a completion of a read out when all the data blocks are read out and made accessible;
• and
• causing a controller of the apparatus to:
• accept the secondary access requests from the sub-processor,
• read the data blocks individually by parallelly processing the secondary access requests using a plurality of channels coupled with the secondary storage, and
• notify the sub-processor every time each of the data blocks is read out,
• wherein the sub-processor has lower computational capability than the main processor.

An information processing method performed by an Apparatus, the method comprising:

• causing a main processor of the apparatus to issue an access request to access a file stored in a secondary storage,
• wherein the access request is received at the main processor from an application program;
• causing a sub-processor of the apparatus, that is coupled with the main processor via a bus, to:
• receive the access request,
• divide the access request into a plurality of secondary access requests,
• issue the secondary access requests to access data blocks formed by dividing the file, and
• notify the main processor of a completion of a read out when all the data blocks are read out and made accessible;
• and
• causing a controller of the apparatus to:
• accept the secondary access requests from the sub-processor,
• read the data blocks individually by parallelly processing the secondary access requests using a plurality of channels coupled with the secondary storage, and
• notify the sub-processor every time each of the data blocks is read out,
• wherein the sub-processor has lower computational capability than the main processor.