Error : lps_1801 elaboration : *E,MTOMDU : More than one unit matches 'TESTBENCH'

Don't mix 3-step (xmvlog/xmebal/xmsim) and single-step (xrun) in the same directory. Ideally just use xrun.

Try this command:
xrun -clean -lps_stime 1ns -lps_verbose 1 -lps_logfile lps.log -gui -input input.tcl nano.v testbench.v -lps_1801 nano.upf

Now I use xrun option but error is same. 

Thank you for your answer

No, that's a different error, which is telling you that the TESTBENCH module has no power domain information in the UPF.

Dear StephenH

I'm currently studying UPF, so I don't know yet.
As shown in the cadence lecture, I want to observe the waveform with gui, but the TESTBENCH snapshot is not currently available.
The top module is configured as TESTBENCH, and the upf file is also set to set_design_top TESTBENCH as TESTBENCH.
I don't know why snapshot doesn't come out.

The current example is in practice by copying <install_dir>/XCELIUM/doc/DebuggingLPS/examples to the Desktop folder.

I don't know how to solve this problem.

Thank you for your answer.

Can you share a snippet of your UPF file? You must be missing a default power domain specification in the UPF. In order to fix it you can do multiple things:

1) Define your set_design_top like this:

set_design_top TESTBENCH -testbench 

set_design_top <put the name of the design top here> 

2) You can also add a power domain definition:

create_supply_set SSD

create_power_domain PDD -include_scope -supply {primary SSD}

thank you i finally solved it!!

I missed default '-testbench' option but inserted this option to solve this problem.