Cvx and OMP which one is better? Why

Hello every body
I solve the same sparse recovery problem with cvx and OMP. I got different result why?

What is OMP? We don’t even know what CVX code you ran on what inputs or have seen the output. Let alone what you did in OMP, whatever that is. And was the optimal objective more than tolerance different, or just different argmin, which since we haven’t seen what you’ve done, don’t even know whether it’s unique?

Apparently English is not your primary language. Nevertheless, you need to do a better job in providing well-formulated questions, with sufficient information provided to enable useful answers.