VTA Simulation Error

Hi, I run python3 test_benchmark_topi_conv2d.py,but some error occurs as following, when VTA FSIM runs, does it need hardware support? “RPC must be enable” means the hardware must open RPC? Thanks

feval = _RPCTimeEvaluator(

NameError: name ‘_RPCTimeEvaluator’ is not defined

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File “test_benchmark_topi_conv2d.py”, line 241, in test_conv2d(device=“arm_cpu”)

File “test_benchmark_topi_conv2d.py”, line 238, in test_conv2d vta.testing.run(_run)

File “/home/project/zjjproject/tvm-master/vta/python/vta/testing/util.py”, line 53, in run run_func(env, rpc.LocalSession())

File “test_benchmark_topi_conv2d.py”, line 237, in _run run_conv2d(env, remote, wl, target)

File “test_benchmark_topi_conv2d.py”, line 173, in run_conv2d time_f = f.time_evaluator(“conv2d”, ctx, number=samples)

File “/home/project/zjjproject/tvm-master/python/tvm/module.py”, line 202, in time_evaluator raise NameError(“time_evaluate is only supported when RPC is enabled”)

NameError: time_evaluate is only supported when RPC is enabled