TI Openmp clacc compiler explanation, openmpclacc

TI Openmp clacc compiler explanation, openmpclacc

TI Openmp clacc compiler.

1. Introduction

OpenMP is a set of Guiding compilation and processing solutions (Compiler ctictive) designed for multi-processor programs that share memory parallel systems ). OpenMP supports C, C ++, and Fortran programming languages. OpenMp compilers include Sun Compiler, GNU Compiler, and Intel Compiler.

Texas Instruments OpenMP accelerator model implementation is currently supported on the following systems:

SoC	System	Installation Instructions
AM572	AM572 EVM	Processor SDK for AM57x
66AK2H	66AK2H EVM	Processor SDK for K2H
66AK2H	HP m800 Moonshot	MCSDK-HPC for m800
66AK2L	66AK2L EVM	Processor SDK for K2L
66AK2E	66AK2E EVM	Processor SDK for K2E
66AK2G	66AK2G EVM	Processor SDK for K2G

OpenMP 4.0 supports the use of OpenMP on heterogeneous systems by adding support for a set of device structures. OpenMP 4.0 can load the target code to the target device by executing code on the host. For example, the OpenMP accelerator model uses TI's OpenCL runtime, that is, the code on the ARM can be loaded to the DSP for execution, and the result is returned to the ARM.

 

2. clacc Compiler

Clacc is a tool used to compile the source code of the OpenMP 4.0 accelerator model. Clacc depends on the gcc tool chain of the host in sequence, C6000 code generation tool (CGT), TI OpenMP accelerator model, and OpenCL host library.

Use the following command to compile a program using clacc:

Clacc [options] [object-files] C-source-files

 

The clacc options are summarized as follows:

-H, -- help	Display rental information
-V, -- verbose	Display debug output
-K, -- keep_files
	Keep intermediate temporary files
-D, -- runtime_verbose
	Enable runtime debugging information display
-P, -- runtime_performance
	Enable runtime performance information display
-G, -- debug	Generate the target debugging symbol
-- Make_lib	Compile static library
-- Host_ccArg	Host compilation and usage
-- HcArg	Host compilation options
-- TcArg	Target compilation options
-- HlArg	Host connection options
-- TlArg	Target connection options
-- Show_cc_opts	Show host and target compiler options being used
-O, -- exe	Name

The use of the OpenMP structure and ti-specific extensions requires a specific code structure. These examples usually have the following source directory file structure:

· Host C/C ++ files

O main. cpp/c with the main () function

O The function used in the target region is equivalent to host. cpp/c on the host.

· Target C file

O file has# Pragma omp targetAnd# Pragma omp declare targetRegions are named _ target. c

· Makefile

O contains the make. inc file

PS: The file structure and clacc compilation commands must follow the requirements strictly.