Information processing apparatus, arithmetic device, and information transferring method

An arithmetic device comprising:

• a storing unit that stores a pointer set in which a write pointer indicating an address used when data received from another arithmetic device is stored in a storage device is associated with a read pointer indicating an address used when the data is read from the storage device, the pointer set being indicated by a pointer identifier, wherein the storing unit comprises a memory that stores therein a plurality of pointer sets, the number of which is equal to or greater than the number of processes that are executed within the arithmetic device and simultaneously receive data from other arithmetic devices, and an acquiring unit that acquires, from the memory, a pointer set indicated by a pointer identifier received from an arithmetic device corresponding to a transmission source of data;
• a notifying unit that notifies an arithmetic device corresponding to a transmission source of data of a pointer identifier;
• a retaining unit that retains, when both the data and the pointer identifier notified by the notifying unit are received from the arithmetic device corresponding to the transmission source of the data, the received data in the storage device in accordance with an address indicated by a write pointer in a pointer set acquired from the memory by the acquiring unit, the pointer set being indicated by the received pointer identifier;
• and
• a plurality of transmitting units, the number of which is the same as the number of processes that can be simultaneously executed by the arithmetic device, each transmit both the pointer identifier notified by an arithmetic device corresponding to a destination and the data to the node corresponding to the destination.

An information transferring method comprising:

• storing, in a storing unit of a node, a pointer set in which a write pointer indicating an address used when data received from another node is stored in a storage device is associated with a read pointer indicating an address used when the data is read from the storage device, the pointer set being indicated by a pointer identifier, wherein the storing unit comprises a memory that stores therein a plurality of pointer sets, the number of which is equal to or greater than the number of processes that are executed within the node and simultaneously receive data from other nodes, and an acquiring unit that acquires, from the memory, a pointer set indicated by a pointer identifier received from a node corresponding to a transmission source of data;
• notifying a node corresponding to a transmission source of the data of a pointer identifier;
• retaining, when both the data and the pointer identifier notified at the notifying are received from the node corresponding to the transmission source of the data, the received data in the storage device in accordance with an address indicated by a write pointer in a pointer set acquired from the memory by the acquiring unit, the pointer set being indicated by the received pointer identifier;
• and
• transmitting, by a plurality of transmitting units the number of which is the same as the number of processes that can be simultaneously executed by the node, both the pointer identifier notified by a node corresponding to a destination and the data to the node corresponding to the destination.