User guide

6-2
VPD and EVCD File Generation
• System Tasks and Functions
• Runtime Options
• VPD Methodology
• EVCD File Generation
Advantages of VPD
VPD offers the following significant advantages over the standard
VCD ASCII format:
• Provides a compressed binary format that dramatically reduces
file size as compared to VCD and other proprietary file formats.
• The VPD compressed binary format dramatically reduces signal
load time.
• Allows data collection for signals or scopes to be turned on and
off during a simulation run, thus, dramatically improving simulation
run time and file size.
• Can save source statement execution data. This allows instant
replay of source execution in the DVE Source Window.
VPD has a set of command line options that affect performance and
file sizes and which allow you to run VPD in the most effective manner.
To optimize VCS performance and VPD file size, consider the size of
the design, the RAM memory capacity of your workstation, swap
space, disk storage limits, and the methodology used in the project.