DATA TRANSFER DEVICE, DATA TRANSFER METHOD, AND COMPUTER DEVICE

摘要

A local-memory side data transfer unit increments the number of addresses, reads out data from a local memory, and stores the data into a cache memory of a remote-memory side data transfer unit. For preventing data mismatching with the local memory from being stored into the cache memory, a cache clearing operation is executed in units of an elapse of a round trip time period for data transfer between the local memory and the remote memory. Alternatively, the cache clearing operation is executed upon receipt of a signal notifying data transfer of data stored at a specified address.

主权项

1. A data transfer device to be disposed between a local memory and a remote memory, the device comprising:
a data prefetch portion configured to prefetch data stored in the local memory; a cache memory configured to cache the prefetched data, the prefetched data being continuous data from a specified address to an address to be pre-read; a data transfer portion configured to transfer the cached data to the remote memory while controlling handshaking with the remote memory; and a cache clearing portion configured to measure an elapse of a time period from a start of data transfer from the cache memory to a side of the remote memory by using a timer and erasing the cached data cached into the cache memory upon the elapse of the time period, the time period being a time period necessary for a round-trip data transfer between the local memory and the remote memory.