Forum Discussion

alexislms's avatar
alexislms
Icon for Contributor rankContributor
4 years ago
Solved

Questa 2020.1: Error: (vsim-3296) Unknown option '-restore'

I'm trying to restore a checkpoint of a very long simulation using

$ vsim -restore checkpoint 
Reading pref.tcl
** Error: (vsim-3296) Unknown option '-restore'.
Use the -help option for complete vsim usage.
Errors: 1, Warnings: 0

From the Questa SIM Command Reference Manual:

restore
Restores the state of a simulation that was saved with a checkpoint command during the current
invocation of vsim (a “warm restore”).
Syntax
restore <pathname>
Description
The restored items are: simulation kernel state, vsim.wlf file, HDL objects listed in the List and
Wave windows, file pointer positions for files opened under VHDL and under Verilog $fopen,
and the saved state of foreign architectures.
Use this command to restore while running vsim. To start up vsim and simultaneously restore a
previously-saved checkpoint, use vsim -restore (called a "cold restore").

The last line: `use vsim -restore`.

Opening vsim and then "restore checkpoint": ("checkpoint" is the filename)

$ vsim -help restore
Model Technology ModelSim - INTEL FPGA STARTER EDITION vsim 2020.1 Simulator 2020.02 Feb 28 2020
** Error (suppressible): (vsim-13356) Option "restore" is unrecognized Category for vsim tool.

What am I missing?

Regards,

  • SyafieqS's avatar
    SyafieqS
    4 years ago

    Alexis,


    Are you using Modelsim or Questasim?

    The reason is from the image you attached seem like you are using Modelsim as mentioned


    ""Model Technology ModelSim - INTEL FPGA STARTER EDITION vsim 2020.1 Simulator 2020.02 Feb 28 2020""

    ""Modelsim>""


7 Replies

  • SyafieqS's avatar
    SyafieqS
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.


    p/s: If any answer from community or Intel support are helpful, please feel free to mark as solution and give Kudos.


  • SyafieqS's avatar
    SyafieqS
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    Alexis,


    As Questa is quite new to Quartus this might be a limitation.

    Let me try to reproduce the issue and let you know.



    • alexislms's avatar
      alexislms
      Icon for Contributor rankContributor
      4 years ago

      Hi @SyafieqS , this has nothing to do with Quartus, it's a questa/modelsim feature documented in its user manual.

      Please let me know since we need to be able to open results of a long running simulation in another computer, and eventually continue the simulation.

  • SyafieqS's avatar
    SyafieqS
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    Alexis,


    Are you using Modelsim or Questasim?

    The reason is from the image you attached seem like you are using Modelsim as mentioned


    ""Model Technology ModelSim - INTEL FPGA STARTER EDITION vsim 2020.1 Simulator 2020.02 Feb 28 2020""

    ""Modelsim>""


    • alexislms's avatar
      alexislms
      Icon for Contributor rankContributor
      4 years ago

      The PATH might have been mixed... (simulated and snapshot saved with Questa but tried to open it on a desktop with modelsim in the path...)

      Sorry about that @SyafieqS ! Let me try again with Questa.

  • SyafieqS's avatar
    SyafieqS
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    Alexis.


    Sure let me know if the issue still persist or any update



    • alexislms's avatar
      alexislms
      Icon for Contributor rankContributor
      4 years ago

      @SyafieqS I've tried with Quartus and it has worked! Modelsim doesn't support this feature.

      Please feel free to close this ticket.

      Thank you for your help!

      Regards,