Domestic many-core processor computing core memory compression method

Abstract

The invention discloses a domestic many-core processor computing core memory compression method. The method comprises the following steps that: when a process is reserved, a process reservation interface of an operating system firstly calls a kernel-level compression interface to compress a memory image currently used by the process, and then writes compressed memory image data into a check pointfile; and when the process is recovered, the process recovery interface of the operating system firstly calls a kernel-level decompression interface to decompress the memory image data read from the check point file, and then recovers the decompressed memory image data to the memory space of the process. According to the invention, the problems of long process retention and recovery time and pooruser experience in the current domestic super computer are solved.

Description

technical field

[0001] The invention relates to a method for compressing the computing core memory of a domestic many-core processor, and belongs to the technical field of supercomputer process retention and recovery. Background technique

[0002] Reserved recovery is one of the necessary fault-tolerant mechanisms in supercomputers, which can be divided into user-level preserved recovery and kernel-level preserved recovery. At present, the kernel-level retention and recovery mechanism has been implemented in domestic supercomputers. Among them, the typical kernel-level retention recovery mechanism is the process retention recovery technology. The main work of the process retention recovery mechanism is to call the process retention interface to back up the process state when the operating system fails or some processes are terminated due to external errors. Generate a checkpoint file, and by loading the checkpoint file, the operation of the terminated process can be resumed...

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