How can I make 100% about "SDF statistics Annotated percentage" in ncverilog

How can I make 100% about "SDF statistics Annotated percentage" in ncverilog

Hello.

When I simulate routed-netlist by ncverilog, sdf do not annotate 100%..

sdf was made by prime-time.

I attached ncverilog.log below.

>>
Reading SDF file from location "../../../back_end/6_sta/func/sdf/LOGIC_TOP.wst.max.sdf"
Compiled SDF file "LOGIC_TOP.wst.max.sdf.X" older than source SDF file "../../../back_end/6_sta/func/sdf/LOGIC_TOP.wst.max.sdf".
Recompiling.
Writing compiled SDF file to "LOGIC_TOP.wst.max.sdf.X".
Annotating SDF timing data:
Compiled SDF file: LOGIC_TOP.wst.max.sdf.X
Log file:
Backannotation scope: test_mod.Icore_0.Icntr_0.Ilogic_top0
Configuration file:
MTM control: MAXIMUM
Scale factors:
Scale type:
Annotation completed successfully...
SDF statistics: No. of Pathdelays = 5250 Annotated = 80.34% -- No. of Tchecks = 2793 Annotated = 67.99%
Total Annotated Percentage
Path Delays 5250 4218 80.34
$setup 32 10 31.25
$hold 198 135 68.18
$width 693 517 74.60
$recovery 166 125 75.30
$setuphold 1704 1112 65.26
Building instance overlay tables: .................... Done
Generating native compiled code:


Best regards

Re: How can I make 100% about "SDF statistics Annotated percentage" in ncverilog

typically this is the case when you are using the wrong netlist and the name does not match. be 100% sure the netlist being simulated is the same used to generate the SDF.

Re: How can I make 100% about "SDF statistics Annotated percentage" in ncverilog

I checked name and path of rtl code, synthesis netlist, p&r export netlist, and simulation environment.

but i didn't find any mismatch.

post function simulation is passed. no malfunction.
but sdf annotate 80%..

Re: How can I make 100% about "SDF statistics Annotated percentage" in ncverilog

santapio said:

I checked name and path of rtl code.

Click to expand...

why? you should be simulating the exported post route netlist. not RTL, ceirtainly not post synthesis.