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using command ncverilog cause hang issue

Jack Lee
Hi, I am Jack.I have something to verify about the ncverilog command.

I write the ncverilog command to compile and simulate my design:ncverilog   abc_tb.v -f abc_tb.f -l abc_tb.log  +ncelabargs+"-timescale 1ps/1ps" +access+rw(abc_tb.f is the filelist which contains all files required for this design) I face hanging issue while running simulation, when I remove the option +access+rw, the hang issue can be avoided.Why this can be happened?I have tried out with other tools like VCS, I have not experienced this type of issue, thanks for giving me some advices.
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  • Hi again Jack,

    The answer of this question is very very important for me: How Simulator was hanging in your situation

    1. Was it a delta-cycle issue, in which time was stopped but delta cycles were counting up?

    2. Was it a frozen issue, in which both time and delta cycles were not increasing and simulator couldn't be stopped with a single ctrl+C command?.

     My current situation is the second one, in which I can do nothing : I can not even pause the simulator with a single ctrl+C. What I can do is just pressing ctrl+C multiple times and simulator terminates.So I can not do debugging I can not know where was the last statement before entering the hanging state .....

     Regards,

     Inan.

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  • Hi again Jack,

    The answer of this question is very very important for me: How Simulator was hanging in your situation

    1. Was it a delta-cycle issue, in which time was stopped but delta cycles were counting up?

    2. Was it a frozen issue, in which both time and delta cycles were not increasing and simulator couldn't be stopped with a single ctrl+C command?.

     My current situation is the second one, in which I can do nothing : I can not even pause the simulator with a single ctrl+C. What I can do is just pressing ctrl+C multiple times and simulator terminates.So I can not do debugging I can not know where was the last statement before entering the hanging state .....

     Regards,

     Inan.

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