On Mon, 03 Sep 2007 06:53:55 -0700, Jaco Naude <
[email protected]>
wrote:
>Hi there,
>
>Does anybody know how to measure the exact runtime of a simulation in
>ModelSim PE? Also is it possible to measure the time ModelSim takes to
>compile a VHDL file?
>
>Thanks for any help
>Jaco
Use the Tcl [time] command to launch your activity
from a ModelSim command prompt, in either command-line
or GUI mode:
set compiletime [time {vcom myfile.vhd}]
set runtime [time {vsim -do "run -all" my_toplevel}]
The resulting strings $compiletime and $runtime will
be of the form
286738 microseconds per iteration
The "per iteration" part is because Tcl's [time] command
allows you to run the command in question more than once,
to get a better estimate: try this at the ModelSim
command line...
time {puts hello} 5
But, for long-running activity like compile and sim,
it will be sufficient to run the command just once.
Of course you can easily massage the result string
using standard Tcl to get the values you want:
regexp {\d+} $compiletime ct_microsecs
set ct_secs [expr {$ct_microsecs / 1000000.0}]
puts [format "Compilation time was %6.4f seconds" $ct_secs]
and so on, ad nauseam.
--
Jonathan Bromley, Consultant
DOULOS - Developing Design Know-how
VHDL * Verilog * SystemC * e * Perl * Tcl/Tk * Project Services
Doulos Ltd., 22 Market Place, Ringwood, BH24 1AW, UK
[email protected]
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