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Method for hpl test optimization based on memory affinity

An optimization method and an affinity technology, applied in the computer field, can solve problems such as reducing system memory access performance, achieve the effect of improving memory access performance, good promotion and application value, and improving hpl test results

Inactive Publication Date: 2018-03-23
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Problems solved by technology

However, the auto_numabalaning mechanism will have a certain impact on the operation of the process, because there will be a lot of overhead in the process of process and memory migration, and the overhead consumed in the process of process and memory migration will greatly reduce the memory access performance of the system. further improvement

Method used

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  • Method for hpl test optimization based on memory affinity

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Embodiment

[0030] Such as figure 1 As shown, the hpl test optimization method based on memory affinity of the present invention specifically comprises the following steps:

[0031] S1: Automatically collect the CPU configuration of the test environment through system files.

[0032] The CPU configuration of the test environment is automatically collected through the profs file system of the Linux system. The CPU configuration includes the number of nodes and the number of cores.

[0033] S2: According to the CPU configuration, set the number of parallel processes used during the test run, and the number of parallel processes is equal to the number of cores configured by the CPU.

[0034] S3: Load the kernel module that sets the process affinity, set the scheduling mask of the process through the memory affinity setting algorithm, bind the process to a node, and set the process to apply for memory locally, and finally bind the hpl process on average in each node of the system.

[0035]...

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Abstract

The invention discloses a method for hpl test optimization based on memory affinity and belongs to the technical field of computers. The method for hpl test optimization based on memory affinity specifically includes the following steps of S1, automatically collecting CPU configuration of a test environment by use of system files; S2, setting the number of parallel processes used during the test run according to the CPU configuration; and S3, loading a kernel module which sets process affinity. The method for hpl test optimization based on memory affinity can avoid the overhead of process or memory migration to greatly improve the system's memory performance and has a good popularization and application value.

Description

technical field [0001] The invention relates to the technical field of computers, and specifically provides an hpl test optimization method based on memory affinity. Background technique [0002] Computers have the advantages of a large amount of stored information and convenient and quick access to information by users, and are widely used. In the SMP (Symmetrical Multi-Processing) hpl (high performancecomputing linpack benchmark) high-performance computing linpack benchmark test in a multi-symmetrical processor environment, the matrix size of the test will be set according to the memory configuration of the test environment, while in the SMP environment cross-node The performance of accessing memory is lower than that of accessing local memory, so cross-node memory access will affect the hpl test. At present, during the hpl test, the system's auto_numabalaning mechanism can be used to dynamically migrate the process and memory during the test process so that the process c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/36G06F9/50
CPCG06F9/5016G06F11/3664
Inventor 刘长生
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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