nc save checkpoint问题

chenfengrugao

大家好，遇到一个问题，用nc仿真时，save checkpoint时说SDI信息不会保存，SDI是什么意思？

Ran until 234557889 NS + 0
ncsim> run -clean
ncsim: *W,RNALCL: Simulation is already at a clean point.
ncsim> save -simulation SNAPSHOT_init

Message!     [SDI/Verilog]                                                     
    SDI/Verilog does not support save - no SDI information will be saved.
Current simulation time = 0                                                                        
    "/eda/tools/cadence/ius141/tools/methodology/UVM/CDNS-1.1d/additions/sv/cdns_recording.svh", 75: $sdi_create_fiber(name,t,{"$uvm:",scope});
Saved snapshot worklib.SNAPSHOT_init:sv
ncsim> quit