Information processing apparatus and method of switching settings thereof

An information processing apparatus configured to perform data communication with an external apparatus, comprising:

• a plurality of processors;
• a crossbar switch configured to include a first routing table and a second routing table used for routing between the plurality of processors and the external apparatus and storing configuration information of the information processing apparatus, the crossbar switch being configured to relay data communication between the plurality of processors and the external apparatus using the first routing table or the second routing table;
• and
• a management unit configured to update configuration information stored in a routing table being not used for operation of the information processing apparatus out of the first routing table and the second routing table at a time of changing a configuration of the information processing apparatus, the managing unit being configured to instruct any one of the processors to switch the updated routing table and the first routing table.

A method of switching internal settings in an information processing apparatus including a plurality of processors, a crossbar switch connected to the plurality of processors and having a first routing table and a second routing table used for routing between the plurality of processors and an external apparatus, and a management unit managing the plurality of processors, the method comprising:

• performing, by the plurality of processors, data communication with the external apparatus using the first routing table;
• preparing, by the management unit, connection information in the second routing table such that a processor to be attached becomes connected to the crossbar switch;
• and
• when at least one processor is attached to the information processing apparatus from among the plurality of processors, switching a routing table to be used for data communication by the at least one processor from the first routing table to the second routing table.