Introduction

The Affinity Analyzer is an application source code analysis tool designed for developers, users, and independent software vendors (ISVs) of the Kunpeng platform. It is one of the extended tools of the Kunpeng DevKit. It checks software code to improve code quality and memory access performance. It works only on the Kunpeng 920 platform.

**Table 1** Task description
Function	Description
64-bit running mode check	Identifies the applications to be ported from the 32-bit platform to the 64-bit platform and provides modification suggestions for the porting.
Byte alignment check	Checks the byte alignment of the structure variables in the source code.
Cache line alignment check	Checks the 128-byte alignment of structure variables in the C/C++ source code to improve memory access performance.
Static memory consistency check	Checks for any memory consistency problem when the source code is ported to the Kunpeng platform and provides suggestions on inserting memory barriers.
Vectorization check	Checks vectorizable code fragments and provides modification suggestions.
Matricization check	Checks matricizable code fragments and provides modification suggestions.
Build affinity	Analyzes the content in the makefile and CMakeLists.txt that can be replaced with content in the Kunpeng library, and provides replacement suggestions and function repair.
Calculation precision analysis	After instrumenting application functions using the precision analysis tool, run the functions on the x86 platform and Kunpeng platform. Then the precision analysis tool compares the output results to analyze the calculation precision differences between the platforms.

Use Restrictions

**Table 2** Use restrictions
Task Type	Description
Byte alignment check	If dependency files are unavailable when header files are used in recursion, the analysis accuracy decreases.

Parent topic: Affinity Analyzer