Why does the size of the "dni" folder in my project directory gradually increase after compiling the design repeatedly?

Description

Due to a problem in the Quartus® Prime Pro Edition Software version 23.3 and later, you might see the size of the dni folder in your project directory gradually increase with each execution of Analysis and Synthesis.

This occurs because of the failure to clean up the dni/sandboxes directory after compilation.

This may lead to storage problems as the dni folder may require an excessive amount of space.
 

Resolution

To workaround this problem in the Quartus® Prime Pro Edition Software version 23.3 and 23.4, regularly perform manual clean up of the dni/sandboxes after compilation. To do so, follow the steps below:

Create a new tcl file in your project folder.

Place the following commands, substituting the respective <project_name> with the current project name of your design.

project_open <project_name>

dni::delete_stale_sandboxes

project_close

Execute this tcl file from the command shell by executing quartus_sh -t <tcl _file>, or source the tcl file from the Tcl Console in the GUI.

This problem is fixed beginning with the Quartus® Prime Pro Edition Software version 24.3.