Development Reference Guides

Contents

fast

Maximizes speed across the entire program.

Syntax

Linux:
-fast
Windows:
/fast
Arguments
None
Default
OFF
The optimizations that maximize speed are not enabled.
Description
This option maximizes speed across the entire program.
Linux
It sets the following options:
-ipo
,
-O3
,
-static
,
-fp-model fast=2
Windows
It sets the following options:
/O3
,
/Qipo
,
/Qprec-div-
,
/fp:fast=2
Option
fast
sets some aggressive optimizations that may not be appropriate for all applications. The resulting executable may not run on processor types different from the one on which you compile. You should make sure that you understand the individual optimization options that are enabled by option
fast
.
This option only applies to host compilation. When offloading is enabled, it does not impact device-specific compilation.
Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.
Notice revision #20201201
IDE Equivalent
None
Alternate Options
None

Product and Performance Information

1

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