Your longest time to complete an HDL simulation?

[emece67]

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[legacy]

the most interesting question is: what were you simulating for taking so long time to complete?

[brucehoult]

Probably not that long, but that's only because there's no reason to.

We usually run bare-metal Dhrystone and Coremark in verilator which take I guess sometimes a couple of days, but things such as booting linux and running SPEC we leave until we have the design in an FPGA -- and then a SPEC run can take a week or two.

[legacy]

Ironically, it took 2 years for cross-compiling Gnat on a Linux/x86 box targetting for a Linux/HPPA workstation, this in order to have a working Ada compiler for building an HDL simulator. Now it works, and the first simulated circuit took just a couple of minutes.

So 2 years for 2 minutes of fun, but it was really insanely great 

[LapTop006]

Ironically, it took 2 years for cross-compiling Gnat on a Linux/x86 box targetting for a Linux/HPPA workstation, this in order to have a working Ada compiler for building an HDL simulator. Now it works, and the first simulated circuit took just a couple of minutes.

So 2 years for 2 minutes of fun, but it was really insanely great 

Seems odd, as I recall by the time Linux on HPPA was vaguely usable the machines were obsolete enough I'm surprised you'd bother.

[emece67]

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[legacy]

DO-254 compliance

that's interesting. I do HDL for more the hobby, DO-178b for the job.
ModelSim for DO-245 is great!

[ale500]

Our mixed-mode simulations need 1 second per 3 ns of simulated time..., the chip has around 200 k gates.

[legacy]

My 6.5 days were a simulation

which machine have you used? XEON@??Ghz?

[emece67]

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