[Test][Possible flaky test] QEMU timeout on zephyr test_relay

[mehrdadh]

https://ci.tlcpack.ai/blue/organizations/jenkins/tvm/detail/PR-8822/4/pipeline/#step-203-log-1971

=================================== FAILURES ===================================
____________________________ test_relay[mps2_an521] ____________________________
temp_dir = <tvm.contrib.utils.TempDirectory object at 0x7f67f6c28518>
platform = 'mps2_an521', west_cmd = 'west', tvm_debug = False
    @tvm.testing.requires_micro

    def test_relay(temp_dir, platform, west_cmd, tvm_debug):

        """Testing a simple relay graph"""
        model, zephyr_board = PLATFORMS[platform]
        build_config = {"debug": tvm_debug}
        shape = (10,)
        dtype = "int8"
        # Construct Relay program.
        x = relay.var("x", relay.TensorType(shape=shape, dtype=dtype))
        xx = relay.multiply(x, x)
        z = relay.add(xx, relay.const(np.ones(shape=shape, dtype=dtype)))
        func = relay.Function([x], z)
        ir_mod = tvm.IRModule.from_expr(func)
        target = tvm.target.target.micro(model)

        with tvm.transform.PassContext(opt_level=3, config={"tir.disable_vectorize": True}):

            mod = tvm.relay.build(ir_mod, target=target)
        with _make_session(temp_dir, zephyr_board, west_cmd, mod, build_config) as session:

            graph_mod = tvm.micro.create_local_graph_executor(

>               mod.get_graph_json(), session.get_system_lib(), session.device
            )
tests/micro/zephyr/test_zephyr.py:216: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
python/tvm/micro/session.py:88: in get_system_lib
    return self._rpc.get_function("runtime.SystemLib")()
python/tvm/rpc/client.py:73: in get_function
    return self._sess.get_function(name)
python/tvm/runtime/module.py:87: in get_function
    self.handle, c_str(name), ctypes.c_int(query_imports), ctypes.byref(ret_handle)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
ret = -1
    def check_call(ret):
        """Check the return value of C API call
        This function will raise exception when error occurs.
        Wrap every API call with this function
        Parameters
        ----------
        ret : int
            return value from API calls
        """
        if ret != 0:
>           raise get_last_ffi_error()

Maybe we need to increase the timeout.

[tmoreau89]

Thanks for starting this issue @mehrdadh. For reference this happened in this PR. The issue was circumvented by re-triggering CI. Changes are likely unrelated to QEMU or uTVM altogether.

[mehrdadh]

this test is temporary disabled: #8927

[Lunderberg]

Test re-enabled in #11362, and running.