Matt Venn07/23/2020, 3:13 PM
Ahmed Ghazy07/23/2020, 3:36 PM
This reduces the core utilization down to 10% and the PDN vertical and horizontal stripe pitches down to 15um.
set ::env(FP_CORE_UTIL) 10; # 10 % utilization set ::env(FP_PDN_VOFFSET) 4; # in microns set ::env(FP_PDN_VPITCH) 15 set ::env(FP_PDN_HOFFSET) 4 set ::env(FP_PDN_HPITCH) 15
Matt Venn07/23/2020, 4:05 PM
Ahmed Ghazy07/23/2020, 4:27 PM
Very tiny designs can be a bit tricky. Things applied by default like diode insertion, clock tree synthesis, etc. may not be relevant in many cases.
set ::env(PL_TARGET_DENSITY) 0.9
when watching those numbers, is there anything to look for in terms of convergence?The overflow (OVFL) is what the global placer is trying to get down, so that's what you'd be looking for.
Matt Venn07/24/2020, 8:41 AM
Ahmed Ghazy07/24/2020, 11:36 AM
Matt Venn07/24/2020, 11:37 AM
Ahmed Ghazy07/24/2020, 11:39 AM
Matt Venn07/24/2020, 11:42 AM
Ahmed Ghazy07/24/2020, 11:55 AM