Intel® oneAPI Programming Guide

Programming Guide

Contents

Use a Config file for setvars.bat on Windows

The
setvars.bat
 script sets environment variables for use with the oneAPI toolkits by executing each of the
<install-dir>\latest\env\vars.bat
 scripts found in the respective oneAPI folders. Unless you configure your Windows system to run the
setvars.bat
 script automatically, it must be executed every time a new terminal window is opened for command line development, or prior to launching Visual Studio Code, Sublime Text, or any other C/C++ editor you use. For more information, see Configure Your System.
The procedure below describes how to use a configuration file to manage environment variables.

Versions and Configurations

Some oneAPI tools support installation of multiple versions. For those tools that do support multiple versions, the directory is organized like this (assuming a default installation and using the compiler as an example):
\Program Files (x86)\Intel\oneAPI\compiler\
|-- 2021.1.1
|-- 2021.2.0
`-- latest -> 2021.2.0
For example:
For all tools, there is a symbolic link named
latest
 that points to the latest installed version of that component; and the
vars.bat
 script located in the
latest\env\
 folder is what the
setvars.bat
 executes by default.
If required,
setvars.bat
 can be customized to point to a specific directory by using a configuration file.

–config Parameter

The top level
setvars.bat
 script accepts a
--config
 parameter that identifies your custom
config.txt
 file.
<install-dir>\setvars.bat --config="path\to\your\config.txt"
The name of your configuration file can have any name you choose. You can create many config files to setup a variety of development or test environments. For example, you might want to test the latest version of a library with an older version of a compiler; use a setvars config file to manage such a setup.

Config File Sample

The examples below show a simple example of the config file:
Load Latest of Everything but…
mkl=1.1
dldt=exclude
Exclude Everything but…
default=exclude
mkl=1.0
ipp=latest
The configuration text file must follow these requirements:
  • a newline delimited text file
  • each line consists of a single
    "key=value"
     pair
  • "key"
     names a component folder in the top-level set of oneAPI directories (the folders found in the
    %ONEAPI_ROOT%
     directory). If a
    "key"
     appears more than once in a config file, the last
    "key"
     wins and any prior keys with the same name are ignored.
  • “
    value
    ” names a version directory that is found at the top-level of the component directory. This includes any symbolic links (such as
    latest
    ) that might be present at that level in the component directory.
    • OR
      "value"
       can be
      "exclude"
      , which means the named key will NOT have its
      vars.bat
       script executed by the
      setvars.bat
       script.
The
"key=value"
 pair
"default=exclude"
 is a special case. When included, it will exclude executing ALL
env\vars.bat
 scripts, except those that are listed in the config file. See the examples below.

Further Customization of Config Files

The config file can be used to exclude specific components, include specific component versions or only include specific component versions that are named after a
"default=exclude"
 statement.
By default,
setvars.bat
 will process the
latest
 version of each
env\vars.bat
 script.
The sample below shows two versions of Intel oneMKL installed: 2021.1.1 and 2021.2.0. The
latest
 shortcut points to the 2021.2.0 folder because it is the latest version installed. By default,
setvars.bat
 will execute the 2021.2.0
vars.bat
 script in the mkl folder because that is the folder that
latest
 points to.
Two versions of Intel oneMKL and config files
Specify a Specific Version
To direct
setvars.bat
 to execute the
<install-dir>\mkl\2021.1.1\env\vars.bat
 script, add
mkl=2021.1.1
 to your config file.
This instructs
setvars.bat
 to execute the
env\vars.bat
 script located in the
2021.1.1
 version folder inside the mkl directory. For other installed components,
setvars.bat
 will execute the
env\vars.bat
 script located in the latest version folder.
Exclude Specific Components
To exclude a component, use the following syntax:
<key>=exclude
For example, to exclude Intel IPP, but include the 2021.1.1 version of Intel oneMKL:
mkl=2021.1.1
ipp=exclude
In this example:
  • setvars.bat
     WILL execute the Intel oneMKL 2021.1.1
    env\vars.bat
     script
  • setvars.bat
     WILL NOT execute Intel IPP
    env\vars.bat
     script files
  • setvars.bat
     WILL execute the latest version of the remaining
    env\vars.bat
     script files
Include Specific Components
To execute a specific list of component
env\vars.bat
 scripts, you must first exclude all
env\vars.bat
 scripts. Then add back the list of components to be executed by
setvars.bat
. Use the following syntax to exclude all component
env\vars.bat
 scripts from being executed:
default=exclude
For example, to have
setvars.bat
 execute only the Intel oneMKL and Intel IPP component
env\vars.bat
 scripts, use this config file:
default=exclude
mkl=2021.1.1
ipp=latest
In this example:
  • setvars.bat
     WILL execute the Intel oneMKL 2021.1.1
    env\vars.bat
     script
  • setvars.bat
     WILL execute the latest version of the Intel IPP
    env\vars.bat
     script
  • setvars.bat
     WILL NOT execute the
    env\vars.bat
     script for any other components

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.