A heap memory management method and device for a shared memory coprocessor

Abstract

The present application relates to a heap memory management method and device for a shared memory coprocessor. The method includes: before executing the co-processing terminal program, applying for a larger continuous heap memory space through the first interface function, converting the virtual address of the applied heap memory space into a physical address, and passing the physical address to the co-processing The coprocessor-side program organizes the requested heap memory space into an available linked list and an allocated linked list; when the coprocessor-side program applies for memory usage, the second interface function starts from the head of the available linked list to find the first block of available memory Allocation, and add the newly allocated memory to the end of the linked list of the allocated linked list; during the execution of the coprocessor side program, release the coprocessor side heap memory space through the third interface function, and add the newly released memory to the available linked list; After the coprocessor end program is executed, the coprocessor heap memory space is cleared according to the virtual address through the fourth interface function.

Description

technical field [0001] The present application relates to the field of computer technology, and in particular, to a heap memory management method and device for a shared memory coprocessor. Background technique [0002] Heterogeneous computing has been continuously developed in the field of high-performance computing due to its high performance and high energy efficiency, and more and more coprocessors have emerged, such as GPU (Graphics Processing Unit, graphics processing unit), FPGA (Field-programmable Gate) Array, Field Programmable Logic Gate Array) and so on. Usually the coprocessor is connected to the host-side CPU (Central Processing Unit, central processing unit) in the form of PCIe (Peripheral Component Interconnect Express) peripherals, and has its own independent storage unit, which cannot be directly connected to the CPU. Shared memory is a separate memory coprocessor. The separate memory coprocessor needs to explicitly transfer data between the memory and the...

AI Technical Summary

Problems solved by technology

However, the existing shared memory coprocessor cannot run the operating system, does not have the ability to convert virtual and real addresses, and can only recognize physical addresses

Therefore, the coprocessor itself does not have dynamic memory management capabilities, and cannot meet the demand for using dynamic memory on the coprocessor side.

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