User guide

17-21
Using the PLI
One advantage to entering .o object files and .a libraries is that you
do not have to recompile the PLI application every time you compile
your design.
Enabling ACC Capabilities
As well as specifying ACC capabilities in only specific parts of your
design (as described in "The PLI Table File" on page 17-6), VCS
allows you to enable ACC capabilities throughout your design. It also
enables you to specify selected write capabilities using a
configuration file. Since enabling ACC capabilities has an adverse
effect on performance VCS also allows you to enable only the ACC
capabilities you need.
Globally Enabling ACC Capabilities
You can enter the +acc+level_number compile-time option to
globally enable ACC capabilities throughout your design.
Note:
Using the +acc+level_number option significantly impedes the
simulation performance of your design. Synopsys recommends
that you use a PLI table file to enable ACC capabilities for only
the parts of your design where you need them. For more details
on doing this, see "The PLI Table File" on page 17-6.