Matt Aamold11/28/2020, 2:38 PM
and modifying it appropriately. I then commented out
since that is fairly small (and the design needs more room). When I do this, the core area remains very small and modifying
0 0 600 600
has no effect. Of course this then results in a RePlAce error saying
. If I uncomment
Filler area is negative!! Please put higher target density or Re-floorplan to have enough coreArea
and adjust manually, I get past the core area issues. So my questions are, 1.) where is the default core area parameter being set when
setting is commented out in the config.tcl? 2.) For this option (option 1) of hardening our design, is setting
to specific values required?
tnt11/28/2020, 2:47 PM
for the "inside" design (i.e. what's going inside the wrapper) is not required.
Matt Aamold11/28/2020, 3:06 PM
. However, the utilization % (as reported in
) is always 1% greater than the value I set for
. Again, if I change
0 0 600 600
, the RePlAce step succeeds. I'm trying to understand the correlation between
0 0 1250 1250
and the default core area used when
is not specified.
tnt11/28/2020, 3:10 PM
percent of the total area. Of course this is just an estimate at that point and so by the time you get to placement, there will be small differences.
Matt Aamold11/28/2020, 3:11 PM
as that gets me past this issue.