Memory page management method and memory page conversion method for GPU

Abstract

The invention discloses a memory page management method and a memory page conversion method for a GPU (Graphics Processing Unit), the memory page management method comprises the following steps: nesting a small physical page in at least one physical page, the memory of the small physical page being smaller than that of the physical page; adding a nested page flag bit with a preset memory size in the page table item of the TLB, wherein the nested page flag bit is used for representing whether a small physical page is nested in a physical page corresponding to the page table item of the current TLB or not and used for representing whether the virtual address hits the physical page corresponding to the page table item of the current TLB or not; and performing virtual and real address conversion according to the adjusted TLB. According to the memory page management method and the memory page conversion method for the GPU, the use efficiency of the memory space can be improved, the storage cost is reduced, and the memory fragmentation problem in the multi-task GPU is reduced.

Description

technical field [0001] The invention relates to the technical field of GPUs, in particular to a memory page management method and a memory page conversion method for GPUs. Background technique [0002] Graphics Processing Unit (GPU) is a microprocessor used to do image and graphics-related calculations. GPU is widely used in cloud computing platforms and data centers because of its powerful computing capabilities, providing users with the For computing, modern GPUs usually use virtual memory technology to abstract real physical memory, providing the illusion of an exclusive memory address space for each task running on the GPU. Under the virtual memory technology, the memory address generated by executing the memory access instruction of a certain task on the GPU is called a virtual address or logical address, and the address that accesses the real physical memory is called a physical address. The address mapping of the address, so when writing the program, you can ignore t...

AI Technical Summary

Problems solved by technology

When the problem of memory fragmentation occurs, it will cause waste of space, resulting in increased program overhead and storage costs

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