Performing Grid Search Over search space of NAS Bench-201

Hi,
I read the research paper about NAS Bench-201 but I am facing some difficulties trying to find a way to perform Grid Search of parameters over the search space of NAS Bench-201 to predict the best performing model and then train that model on the CIFAR-10 dataset for validation accuracy prediction.
I would really appreciate it if you will guide me and give me a head start.