Usage of heartbeat in UVM to terminate simulation

[Jignesh]

Hi,

I would like to use HEARTBEAT feature in UVM to terminate the simulation in case any one of the block in not active or become dead or idle. I am not clear how to use it from user guide. Please help me to understand it. If possible, please share one example of heartbeat.

[uwes]

here are some examples (the developer tests)

http://uvm.git.sourceforge.net/git/gitweb.cgi?p=uvm/uvm;a=tree;f=tests/35objections/91heartbeat;h=64f960b506d9d6fc3323fdf677c96e24f6f07739;hb=refs/heads/UVM_1_1_d

basically the heartbeat raises an error if there is no "ping" from a set of objects(configurable) within a window. the window is defined by trigger events of an uvm_event used to configure the heartbeat. the set of objects is determined by the <hb>.add() calls. the notification of the "ping" (the "i-am-alive-message") is done via a uvm_callbacks_objection and raise/drop.

[sri.cvcblr]

Jignesh,

In case the "block" you are referring to RTL/Verilog blocks - I strongly suggest you use SVA sequence/property to do the same as it makes life lot easier.

Srini

www.cvcblr.com/blog