Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 3/31/2023
Public

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Document Table of Contents

Ofast

Sets certain aggressive options to improve the speed of your application.

Syntax

Linux:

-Ofast

macOS:

-Ofast

Windows:

None

Arguments

None

Default

OFF

The aggressive optimizations that improve speed are not enabled.

Description

This option improves the speed of your application.

It sets compiler options -O3, -no-prec-div, and -fp-model fast=2.

This option is provided for compatibility with gcc.

NOTE:

This option only applies to host compilation. When offloading is enabled, it does not impact device-specific compilation. Offloading can only be enabled when using ifx.

IDE Equivalent

None

Alternate Options

None

See Also