ID 683283
Date 9/24/2018
Public

## 1.11.1.8. Optimizing the Placement for a Timing-Critical Partition

Scenario background: You have run the initial compilation shown in the example script below. You would like to apply Fitter optimizations, such as physical synthesis, only to partition A. No changes have been made to the HDL files. To ensure the previous compilation result for partition B is preserved, and to ensure that Fitter optimizations are applied to the post‑synthesis netlist of partition A, set the netlist type of B to Post-Fit (which was already done in the initial compilation, but is repeated here for safety), and the netlist type of A to Post-Synthesis, as shown in the following example:

### Fitter Optimization for AB_project

set project AB_project

project_open \$project

# Turn on Physical Synthesis Optimization
set_high_effort_fmax_optimization_assignments

# For A, set the netlist type to post-synthesis
set_partition -partition "Partition_A" -netlist_type POST_SYNTH

# For B, set the netlist type to post-fit
set_partition -partition "Partition_B" -netlist_type POST_FIT

# Also set Top to post-fit
set_partition -partition "Top" -netlist_type POST_FIT

# Run incremental compilation
export_assignments
execute_flow -full_compile

project_close