Why always we use run_test() inside the initial begin block?

UVM
1

always it is recommended to use run_test() inside the initial block,is it the fixed rule,i want to know the logic behind it.plz explain.

2

In reply to swati kumari:

runt_test() is what starts the execution of the UVM phases. You can write all the classes you want, but somewhere you have to initiate a process that calls the methods in the class from outside a class.

3

In reply to dave_59:

In addition to Daves reply: run_test makes an object of your test class in the top module.