Array structure suitable for pure user mode far-end direct memory access and optimization method

Abstract

The invention provides an array structure suitable for pure user mode far-end direct memory access and an optimization method; a continuous memory space is allocated on a local machine to store a plurality of memory pointers, and the pointers can point to a local memory address and a remote server memory address according to different use scenes. And when the iterator is used for accessing the data structure, the corresponding far-end memory data is copied to a local memory through a network for reading and writing. And after the access is finished, the local update data is written back to the remote server through the network. Compared with the prior art, the invention has the advantages of being low in network delay, pure in user mode, abstract, simple, easy to use and the like, a far-end direct memory access technology is adopted, network request reading and writing can be conducted by bypassing a memory server central processing unit, extra operating system kernel overhead cannot be increased, and good expansibility is achieved.

Description

technical field [0001] The invention relates to the field of computers, in particular to an array optimization method applicable to pure user mode remote direct memory access technology. Background technique [0002] In the scheme of expanding the memory of the computer server, using the memory of the remote server to expand the memory of the local server is one of the important technologies. Obtaining and using remote memory is a technology that makes the memory of the distributed system host accessible to other machines through the network; in particular, the network card of the host can bypass the processor to directly read and write its memory. At present, network technologies that facilitate remote memory access have been widely used in modern data centers: such as remote direct memory access (RDMA) and Huawei CurreNET. [0003] In order to facilitate upper-level systems (and applications) to obtain remote memory, a series of related technologies have been proposed in ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the existing solutions use a network link that is slow and requires the cooperation of the host processor. The upper layer application needs to modify a lot of code to use the data structure library, which brings additional development difficulties to developers.

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