How to get STA info base 4_cts.odb

[Pxx-X]

First, I use ORFS run a benchmark successfully, and get 4_cts.odb at results file
Second, I run OpenROAD, and input command read_db 4_cts.odb. I want to do some work base pre-routing info

Question 1
how do I get some STA result like ORFS reports?
I have try some command like report_tns and report_wns, but openroad always return 0, but ORFS output not 0.
If I want to get delay info of all timing path, what should I do?
I try to click Update button of Timing Report and Clock Tree Viewer, but OpenROAD do not return anything. Did I missing some thing to read or load?

Question 2
what infomation of 4_cts.odb file contain? I think .odb = .def + .lib + .lef + .v, is it correct?

the input and output of ORFS is there:aes_cipher_top.zip

Asked by a beginer of EDA, Thank you veryyyyyy much!!

[maliberty]

It is better to use the make gui_cts target as that will load the timing data as well.

[Pxx-X]

Another question I don't konw how to deal with:

1. I start with make gui_cts
2. Then, I run global_route ... and detailed_route ... , both run successfully.

The Qestion is:
I want to get accuracy STA result, I think I should do Parasitics Extraction, run write_spef $spef_file and read_spef $spef_fileas as flow.tcl do
However, openroad return Error:

>>>write_spef ./a.spef
[INFO RCX-0134] Can't execute write_spef command. There's no extraction data.

What should I do?
Thank you!

[maliberty]

Just make gui_final

[Pxx-X]

I use make cts to run the ORFS flow, because I modify global router's source code, and I don't want to run the post-cts step in Makefiles.
I want to just use OpenROAD to get .spec files after run make gui_cts, global_route and detailed_route.

Fortunately I find Nangate45.rcx_rules.

define_process_corner -ext_model_index 0 X
extract_parasitics -ext_model_file $rcx_rules_file
write_spef ${random_dir}/extract_parasitics_${random_load_flag}.spef
read_spef ${random_dir}/extract_parasitics_${random_load_flag}.spef
#report timing...

these commands work for me, thanks

[Pxx-X]

BTW, another question about automation.
I use openroad myscripts.tcl -exit to run my scripts in the past.
But, to assess the STA info, I use make gui_cts to start OpenROAD now. I have to source myscript.tcl in gui's terminal, then, I have to close gui manually. It is timing-consuming，Is there any way I can do to achieve my demand? I don't know how to do now.Thank you.

[maliberty]

I'm not clear on your description or needs. You can use make open_<step> to open it non-graphically.