Information processing system, method, and information processing apparatus

A method of controlling an information processing system including a plurality of information processing apparatuses coupled to each other through a plurality of communication paths, the information processing apparatuses including at least a first information processing apparatus and a second information processing apparatus, the method comprising:

• generating, by the first information processing apparatus, a plurality of leading packets, each including destination information to identify the second information processing apparatus in leading data among data read from a first memory of the first information processing apparatus based on a memory transfer request from the first processor, the second information processing apparatus being a destination of the data specified by the memory transfer request;
• transmitting, by the first information processing apparatus, the plurality of leading packets to the plurality of communication paths, respectively;
• generating, by the first information processing apparatus, a plurality of last packets including the destination information in last data among the data read from the first memory based on the memory transfer request;
• transmitting, by the first information processing apparatus, the plurality of last packets to the plurality of communication paths, respectively;
• counting, by the second information processing apparatus, the last packets received through the plurality of communication paths;
• and
• controlling, by the second information processing apparatus, to store the last data included in the received last packets in a second memory of the second information processing apparatus when the number of the last packets counted coincides with the number of the plurality of communication paths.

An information processing apparatus configured to couple to another information processing apparatus through a plurality of communication paths, the information processing apparatus comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• count the last packets received from the another information processing apparatus through the plurality of communication paths, the another information processing apparatus executing a process including generating a plurality of leading packets, each including destination information to identify the information processing apparatus in leading data among data read from a memory of the another information processing apparatus based on a memory transfer request, the memory transfer request specifying the information processing apparatus as a destination of the data, transmitting the plurality of leading packets to the plurality of communication paths, respectively, generating a plurality of last packets including the destination information in last data among the data read from the memory of the another information processing apparatus based on the memory transfer request, and transmitting the plurality of last packets to the plurality of communication paths, respectively, and
• control to store the last data included in the received last packets in the second memory when the number of the last packets counted coincides with the number of the plurality of communication paths.