eda_employee
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 Posted:
Sun Nov 06, 2005 9:10 pm Post subject:
NCSIM *.fsdb dump vs *.shm dump |
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For a large mixed-language (VHDL-93, Verilog-2001) SoC design,
I've noticed that dumping the entire testbench hieararchy (from top)
seems to take a very long time (surprise surprise...)
But there is a large performance difference between dumping a
Debussy-compatible database (*.fsdb) and Signalscan/Simvision (*.shm)
If I use NCSIM's built-in $shm_open/$shm_probe, the simulation runs
much faster. Is this what everyone else is seeing?
(I'm guessing that shm-output uses NCSIM's internal-routines, and
aren't bottlenecked by the PLI/VPI external-interface.)
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