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Showing results for tags 'Cross coverage'.
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Hi Everyone, I am using the UVM env, in that I have two agents lets say agent1 and agen2, I want to get the cross coverage of input stimulus generated by both agents. What I did till now , I have a shared seq_item.svh for both agents , so I did placed the static cnt = 0; class seq_item extends uvm_sequence_item; typedef {x,y,z} lmn_t; typedef {m,n,o} pqr_t; rand lmn_t lmn; rand pqr_t pqr; covergroup cg_for_agent1: coverpoint a: lmn; coverpoint b: pqr; end covergroup covergroup cg_for_agent2: coverpoint a: lmn; coverpoint b: pqr; end covergroup covergroup cg_for_cross_ab; CROSS_cov: cg_for_agent1.a;cg_for_agent1.b;cg_for_agent2.a;cg_for_agent2.b end covergroup function post_randomise(); if (this.get_name == pkt_for_agent1)begin cg_for_agent1.sample(); cnt++; end if (this.get_name == pkt_for_agent2)begin cg_for_agent2.sample(); cnt++; end if (cnt %2 == 0)begin cg_for_cross_ab.sample(); end endfunction Now what I achieved cg_for_agent1 & cg_for_agent2 has bins covered but cg_for_cross_ab received zero bin covered. Strange how static covergroups lost their value. Apart from this, the seq_item object is created in both the agents at same time and randomized at the same time. Please help me where I lost. Thanks. P.S: I am also wondering for functional coverage best technique, as per Mentor's guidelines i am doing this to achieve input test stimulus coverage , that i have sent all the vectors, please help me with any example to get it done in some other good way Thanks again
