def METHOD_NAME(self, arena_idx):
    idx_start = self.arena_size * arena_idx
    cur_arena_size = min(multiprocessing.cpu_count() -
                         idx_start, self.arena_size)
    # idx_end = idx_start + cur_arena_size
    # OMP_PLACES="{N},{N+1},{N+2},...,{N+SZ}"
    # arena_places_str = "{" + "},{".join(str(i) for i in range(idx_start, idx_end)) + "}"
    return {
        "TVM_NUM_THREADS": str(cur_arena_size),
        "OMP_NUM_THREADS": str(cur_arena_size),
        # "OMP_PLACES": arena_places_str,
        # "OMP_PROC_BIND": "true"
    }