Fmax synthesis¶

Step 1: Initialize a directory¶

Place yourself in an empty directory, for example:

mkdir ~/odatix_example
cd ~/odatix_example

Run the init command of Odatix to create configuration files.

odatix init --examples

Step 2: Choose the designs you want to implement¶

Uncomment the architectures you want to implement in odatix_userconfig/fmax_synthesis_settings.yml. Those architectures are defined in odatix_userconfig/architectures.

Change the value of nb_jobs in odatix_userconfig/fmax_synthesis_settings.yml depending on the number of logical cores available on your CPU.

Tip

75% of your number of logical cores is usually a good balance for nb_jobs.

Example:

odatix_userconfig/fmax_synthesis_settings.yml¶

overwrite:        No  # overwrite existing results?
ask_continue:     Yes # prompt 'continue? (y/n)' after settings checks?
show_log_if_one:  Yes # show synthesis log if there is only one architecture selected?
nb_jobs:          12  # maximum number of parallel synthesis

architectures:
   - Example_Counter_vhdl/04bits
   - Example_Counter_vhdl/08bits
   - Example_Counter_vhdl/16bits
   - Example_Counter_vhdl/24bits
   - Example_Counter_vhdl/32bits
   - Example_Counter_vhdl/48bits
   - Example_Counter_vhdl/64bits

Step 3: Choose your target device/technology¶

Select the target device or technology in the yaml file corresponding to your EDA tool.

EDA Tool	Target File
AMD Vivado	`odatix_userconfig/target_vivado.yml`
Synopsys Design Compiler	`odatix_userconfig/target_design_compiler.yml`
OpenLane	`odatix_userconfig/target_openlane.yml`

Step 4: Run the selected designs¶

Vivado

odatix fmax --tool vivado

Design Compiler

odatix fmax --tool design_compiler

Openlane

odatix fmax --tool openlane

Step 5: Visualize and explore the results¶

odatix-explorer