Method and apparatus for dma between accelerator cards, and accelerator card, acceleration platform and medium

Abstract

A method and apparatus of direct memory access DMA between accelerator cards, an accelerator card, an accelerating platform and a non-volatile readable storage medium. The first accelerator card according to the present application can initiatively perform the initiation of the DMA, and, according to the idle-internal-memory datum of the second accelerator card as the data destination terminal recorded in the first accelerator card itself, write the datum directly into the internal memory of the second accelerator card in the mode of DMA, which does not require inquiring the idle-internal-memory address of the second accelerator card before the DMA, and does not require waiting for the second accelerator card to initiate the DMA. The solution realizes the direct DMA writing operation between different accelerator cards at the hardware level, and solves the problem in DMA operation between accelerator cards.