Abstract: A distributed file access method and a related device, applied to a first electronic device, where the first electronic device is in communication connection to a second electronic device, the first electronic device stores metadata of a first file on the second electronic device, and the metadata includes a file modification type and a file modification tag. The method includes: receiving a read instruction for the first file; reading the file modification type and the file modification tag of the first file; and reading the first file according to the file modification type and the file modification tag of the first file. The method can improve performance of file access between electronic devices.

Abstract: In an embodiment a method includes determining, by an electronic device, bit rate information of a media file, wherein the bit rate information comprises bit rates at n moments, wherein n is greater than or equal to 1, wherein n is a positive integer, and wherein the n moments are respectively Tj, and j=1, 2, 3, . . . , and n, determining, by the electronic device, pre-read data amounts of the media file at the n moments based on the bit rate information and sending, by the electronic device, the media file based on the pre-read data amounts at the n moments.

Abstract: The invention discloses a data structure-aware prefetching method and device on a graphics processing unit. The method comprises the steps of acquiring information for a memory access request in which a monitoring processor checks a graph data structure and read data, using a data structure access mode defined by a breadth first search and graph data structure information to generate four corresponding vector prefetching requests and store into a prefetching request queue. The device comprises a data prefetching unit distributed into each processing unit, each data prefetching unit is respectively connected with an memory access monitor, a response FIFO and a primary cache of a load/store unit, and comprises an address space classifier, a runtime information table, prefetching request generation units and the prefetching request queue.

Abstract: The invention discloses a data structure-aware prefetching method and device on a graphics processing unit. The method comprises the steps of acquiring information for a memory access request in which a monitoring processor checks a graph data structure and read data, using a data structure access mode defined by a breadth first search and graph data structure information to generate four corresponding vector prefetching requests and store into a prefetching request queue. The device comprises a data prefetching unit distributed into each processing unit, each data prefetching unit is respectively connected with an memory access monitor, a response FIFO and a primary cache of a load/store unit, and comprises an address space classifier, a runtime information table, prefetching request generation units and the prefetching request queue.