Forum Discussion

sqd0524's avatar
sqd0524
Icon for New Contributor rankNew Contributor
5 years ago

How to speed up simulation in Modelsim SE 10.4

Hi, I use Modelsim SE 10.4 to simulate LDPC IP core generated by Quartus, but it runs too slowly. It uses 1 second to simulate 4 clock periods. How can I speed up the simulation?
Sanket_Doshi's avatar
Sanket_Doshi
Icon for New Contributor rankNew Contributor
5 years ago

Depending on your install, your simulator resolution may be picosecond by default. Check your 

modelsim.ini
and look for the 
Resolution
variable under the 
[vsim]
header.

Alternatively, you can force the resolution on the command line. You are very close to your example. The syntax is 

vsim -t ns
for nanosecond resolution.

sqd0524's avatar
sqd0524
Icon for New Contributor rankNew Contributor
5 years ago

Hi Sanket_Doshi:

The Resolution variable under the [vsim] header in my modelsim.ini had already been setted as nanosecond. But my simulation on LDPC IP core runs very slowly. I want to know how to speed up the simulation. The modelsim's verison is ModelSim SE-64 10.4.

Thank you!