$dist_normal system task

[rettylee]

Hi,guys:
I need to use $dist_normal to generate random data.The task $dist_normal has 3 parameters:SEED,MEAN,STDEV.I only want to maks sure the MEAN and STDEV,the SEED is random.
How can i use the first parameter of task $dist_normal(????,DATA1,DATA2)?
Anyone can help me ?
Thanks

 

[kornukhin]

From "SYSTEMVERILOG FOR VERIFICATION.A Guide to Learning the Testbench Language Features.":
" If you run the same test 50 times, each with a unique seed, you will get 50 different sets of stimuli. Running with multiple seeds broadens the coverage of your test and leverages your work. "

If you need only one set - use constant seed.
Else use unique seed.

 

[rettylee]

Thanks for your guide.I know how should I do now.