Multi-die package

A multi-die package comprising:

• a plurality of dies each including a processor core, a service processor, a cache memory that holds an instruction to be executed by the service processor, and an arbiter that arbitrates between read requests issued from the service processors, wherein
• the plurality of the arbiters respectively mounted on the plurality of dies are coupled in series,
• each of the arbiters excluding the arbiter in the first stage and the arbiter in the last stage arbitrates between a read request from the service processor of the concerned die and a read request selected through arbitration by the arbiter in the previous stage, and outputs the read request selected through the arbitration to the arbiter in the next stage,
• the arbiter in the last stage arbitrates between a read request from the service processor of the concerned die and a read request selected through arbitration by the arbiter in the previous stage, and outputs the read request selected through the arbitration to a memory, and
• the cache memory of each of the plurality of dies holds an instruction output from the memory in response to each of read requests output from the service processors of the concerned die and any of the other dies in association with the read request.