Altera Quartus II Settings File - Manual (Page 553)

FITTER_EFFORT
Controls the fitter's trade-off between performance and compilation speed. Auto Fit adjusts the fitter
optimization effort to minimize compilation time, while still achieving the design timing requirements.
The Auto Fit Effort Desired Slack Margin option can be used to request that Auto Fit apply sufficient
optimization effort to achieve additional timing margin. Standard Fit will use maximum effort regardless
of the design's requirements, leading to higher compilation time and more margin on easier designs. For
difficult designs, Auto Fit and Standard Fit will both use maximum effort. Fast Fit will decrease
optimization effort to reduce compilation time, which may degrade design performance.
Type
Enumeration
Values
• Auto Fit
• Fast Fit
• Standard Fit
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment is included in the Fitter report.
Syntax
set_global_assignment -name FITTER_EFFORT <value>
Default Value
Auto Fit
MNL-Q21005
2015.05.04
FITTER_EFFORT 553
Quartus Settings File Reference Manual Altera Corporation
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