Computer-readable recording medium storing adjustment program and adjustment method

Patent metadata

Field	Value
Publication number	US-11669458-B2
Application number	US-202217690041-A
Country	US
Kind code	B2
Filing date	Mar 9, 2022
Priority date	Jun 30, 2021
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

A non-transitory computer-readable recording medium stores an adjustment program for causing a computer to perform a process including: acquiring a computation performance characteristic that indicates a computation performance value that corresponds to each adjustable dimension, through computation in which a cache memory in a processor that includes the cache memory is used; extracting, by using the computation performance characteristic, an adjustment condition for adjusting an adjustable dimension for which a decrease in computation performance due to a cache miss caused by a cache-line conflict in the cache memory occurs; and inserting adjustment processing based on the adjustment condition into a specific program that is executed by the processor and uses the adjustable dimension.

First claim

What is claimed is:

1. A non-transitory computer-readable recording medium storing an adjustment program for causing a computer to perform a process comprising:
acquiring a computation performance characteristic that indicates a computation performance value that corresponds to each adjustable dimension, through computation in which a cache memory in a processor that includes the cache memory is used;
extracting, by using the computation performance characteristic, an adjustment condition for adjusting an adjustable dimension for which a decrease in computation performance due to a cache miss caused by a cache-line conflict in the cache memory occurs; and
inserting adjustment processing based on the adjustment condition into a specific program that is executed by the processor and uses the adjustable dimension,
the extracting includes extracting, by using the computation performance characteristic, a section of an adjustable dimension for which a decrease in the computation performance occurs, calculating an adjustable dimension that is greater than an adjustable dimension at an end point of the extracted section and for which the computation performance value is greater than or equal to a predetermined threshold, and extracting the adjustment condition that includes the extracted section and the calculated adjustable dimension.

2. The non-transitory computer-readable recording medium according to claim 1 , wherein in the acquiring, the computation performance characteristic is acquired through the computation in which an adjustable dimension is given and continuous addresses are sequentially accessed for data that has a certain data size.

3. The non-transitory computer-readable recording medium according to claim 1 , wherein in the extracting the section, the section is extracted by using an arithmetic mean of the computation performance value corresponding to each adjustable dimension.

4. An adjustment method comprising:
acquiring, by a computer, a computation performance characteristic that indicates a computation performance value that corresponds to each adjustable dimension, through computation in which a cache memory in a processor that includes the cache memory is used;
extracting, by using the computation performance characteristic, an adjustment condition for adjusting an adjustable dimension for which a decrease in computation performance due to a cache miss caused by a cache-line conflict in the cache memory occurs; and
inserting adjustment processing based on the adjustment condition into a specific program that is executed by the processor and uses the adjustable dimension,
the extracting includes extracting, by using the computation performance characteristic, a section of an adjustable dimension for which a decrease in the computation performance occurs, calculating an adjustable dimension that is greater than an adjustable dimension at an end point of the extracted section and for which the computation performance value is greater than or equal to a predetermined threshold, and extracting the adjustment condition that includes the extracted section and the calculated adjustable dimension.

5. An information processing apparatus comprising:
a memory; and
a processor coupled to the memory and configured to:
acquire a computation performance characteristic that indicates a computation performance value that corresponds to each adjustable dimension, through computation in which a cache memory in a processor that includes the cache memory is used;
extract, by using the computation performance characteristic, an adjustment condition for adjusting an adjustable dimension for which a decrease in computation performance due to a cache miss caused by a cache-line conflict in the cache memory occurs; and
insert adjustment processing based on the adjustment condition into a specific program that is executed by the processor and uses the adjustable dimension,
the processor extracts, by using the computation performance characteristic, a section of an adjustable dimension for which a decrease in the computation performance occurs, calculating an adjustable dimension that is greater than an adjustable dimension at an end point of the extracted section and for which the computation performance value is greater than or equal to a predetermined threshold, and extracting the adjustment condition that includes the extracted section and the calculated adjustable dimension.

Assignees

• Fujitsu Ltd

Inventors

• Ohta Eiji

Classifications

• G06F12/0895 Primary

  of parts of caches, e.g. directory or tag array · CPC title

• G06F11/3466

  Performance evaluation by tracing or monitoring · CPC title

• G06F2201/885

  Monitoring specific for caches · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G06F11/3037

  where the computing system component is a memory, e.g. virtual memory, cache (accessing, addressing or allocating within memory systems or architectures G06F12/00; checking stores for correct operation G11C29/00) · CPC title