def test_core_chip_incomplete():
# If only X or only Y are specified, things should fail
mock_mc = Mock()
e = Experiment(mock_mc)
with pytest.raises(ValueError):
e.new_core(chip_x=0)
with pytest.raises(ValueError):
e.new_core(chip_y=0)
def test_core_chip_incomplete():
# If only X or only Y are specified, things should fail
mock_mc = Mock()
e = Experiment(mock_mc)
with pytest.raises(ValueError):
e.new_core(chip_x=0)
with pytest.raises(ValueError):
e.new_core(chip_y=0)
def test_errors(cores_result_data, expected_errors):
"""Test that we can produce a Result object for various scenarios where no
results will exist."""
experiment = Experiment(Mock())
cores_result_data = {experiment.new_core(): d
for d in cores_result_data}
cores = list(cores_result_data)
flows = []
router_recording_cores = set()
placements = {}
routes = {}
groups = {}
cores_records = {c: [] for c in cores}
r = Results(experiment, cores, flows, cores_records,
router_recording_cores, placements, routes,
cores_result_data, groups)
assert r.errors == expected_errors
if expected_errors:
assert "error" in repr(r)
else:
assert "error" not in repr(r)
def test_empty(num_cores, num_flows_per_core):
"""Test that we can produce a Result object for various scenarios where no
results will exist."""
experiment = Experiment(Mock())
cores = [experiment.new_core() for _ in range(num_cores)]
flows = [experiment.new_flow(c, c)
for c in cores
for _ in range(num_flows_per_core)]
router_recording_cores = set()
placements = {c: (0, 0) for c in cores}
routes = {f: RoutingTree((0, 0),
set([(Routes.core(cores.index(f.sinks[0])),
f.sinks[0])]))
for f in flows}
cores_result_data = {c: b"\0\0\0\0" for c in cores}
groups = {}
cores_records = {c: [] for c in cores}
r = Results(experiment, cores, flows, cores_records,
router_recording_cores, placements, routes,
cores_result_data, groups)
assert r.errors == set()
assert len(r.totals()) == 0
assert len(r.core_totals()) == 0
assert len(r.flow_totals()) == 0
assert len(r.flow_counters()) == 0
assert len(r.router_counters()) == 0
def test_empty(num_cores, num_flows_per_core):
"""Test that we can produce a Result object for various scenarios where no
results will exist."""
experiment = Experiment(Mock())
cores = [experiment.new_core() for _ in range(num_cores)]
flows = [
experiment.new_flow(c, c) for c in cores
for _ in range(num_flows_per_core)
]
router_recording_cores = set()
placements = {c: (0, 0) for c in cores}
routes = {
f: RoutingTree(
(0, 0), set([(Routes.core(cores.index(f.sinks[0])), f.sinks[0])]))
for f in flows
}
cores_result_data = {c: b"\0\0\0\0" for c in cores}
groups = {}
cores_records = {c: [] for c in cores}
r = Results(experiment, cores, flows, cores_records,
router_recording_cores, placements, routes, cores_result_data,
groups)
assert r.errors == set()
assert len(r.totals()) == 0
assert len(r.core_totals()) == 0
assert len(r.flow_totals()) == 0
assert len(r.flow_counters()) == 0
assert len(r.router_counters()) == 0
def test_to_csv():
"""Make sure the CSV conversion utility actually works..."""
dt = np.dtype([("a", np.uint), ("b", np.double), ("c", object)])
e = Experiment(Mock())
g0 = e.new_group("g0")
g1 = e.new_group(1)
c0 = e.new_core(name="c0")
c1 = e.new_core(name=1)
f0 = e.new_flow(c0, c0, name="f0")
f1 = e.new_flow(c1, c1, name=1)
# Empty dataset
assert to_csv(np.zeros((0,), dtype=dt)) == "a,b,c"
assert to_csv(np.zeros((0,), dtype=dt), False) == ""
# Standard data types should be handled correctly
a = np.zeros((2,), dtype=dt)
assert to_csv(a) == ("a,b,c\n"
"0,0.0,0\n"
"0,0.0,0")
assert to_csv(a, False) == ("0,0.0,0\n"
"0,0.0,0")
# Nones should be printed specially
a["c"][0] = None
assert to_csv(a) == ("a,b,c\n"
"0,0.0,NA\n"
"0,0.0,0")
# Groups, Flows and Cores should be printed specially
a = np.zeros((6,), dtype=dt)
a["c"][0] = g0
a["c"][1] = g1
a["c"][2] = c0
a["c"][3] = c1
a["c"][4] = f0
a["c"][5] = f1
assert to_csv(a) == ("a,b,c\n"
"0,0.0,g0\n"
"0,0.0,1\n"
"0,0.0,c0\n"
"0,0.0,1\n"
"0,0.0,f0\n"
"0,0.0,1")
def test_get_core_record_lookup():
# Make sure this internal utility produces appropriate results.
e = Experiment(Mock())
# Two cores, one will eventually record router values, the other will not.
core0 = e.new_core()
core1 = e.new_core()
cores = [core0, core1]
e._placements = {core0: (0, 0), core1: (0, 0)}
e._router_recording_cores = set()
# Two flows, one connected loop-back, one connected to the other core.
flow0 = e.new_flow(core0, core0)
flow1 = e.new_flow(core0, core1)
cores_source_flows = {core0: [flow0, flow1], core1: []}
cores_sink_flows = {core0: [flow0], core1: [flow1]}
# If nothing is being recorded, the sets should just contain permanent
# counters
cores_records = e._get_core_record_lookup(
cores, cores_source_flows, cores_sink_flows)
assert cores_records == {
core0: [(core0, Counters.deadlines_missed)],
core1: [(core1, Counters.deadlines_missed)],
}
# If only core counters are being used, they should be included
e.record_sent = True
e.record_received = True
cores_records = e._get_core_record_lookup(
cores, cores_source_flows, cores_sink_flows)
assert cores_records == {
core0: [(core0, Counters.deadlines_missed),
(flow0, Counters.sent), (flow1, Counters.sent),
(flow0, Counters.received)],
core1: [(core1, Counters.deadlines_missed),
(flow1, Counters.received)],
}
# If any routing table entries are present, they should be added to
# anything in the router_recording_cores lookup.
e._router_recording_cores = set([core0])
e.record_external_multicast = True
cores_records = e._get_core_record_lookup(
cores,
cores_source_flows,
cores_sink_flows)
assert cores_records == {
core0: [(core0, Counters.deadlines_missed),
((0, 0), Counters.external_multicast),
(flow0, Counters.sent), (flow1, Counters.sent),
(flow0, Counters.received)],
core1: [(core1, Counters.deadlines_missed),
(flow1, Counters.received)],
}
def test_new_functions():
# Make sure the e.new_* functions all work as expected
e = Experiment(Mock())
# Types should be appropriate
core0 = e.new_core()
assert isinstance(core0, Core)
flow0 = e.new_flow(core0, core0)
assert isinstance(flow0, Flow)
group0 = e.new_group()
assert isinstance(group0, Group)
# Everything should be given unique names
core1 = e.new_core()
flow1 = e.new_flow(core1, core1)
group1 = e.new_group()
assert core0.name != core1.name
assert flow0.name != flow1.name
assert group0.name != group1.name
# Custom names should be allowed
core_foo = e.new_core(name="foo")
flow_bar = e.new_flow(core_foo, core_foo, name="bar")
group_baz = e.new_group(name="baz")
assert core_foo.name == "foo"
assert flow_bar.name == "bar"
assert group_baz.name == "baz"
# The objects should all give their name/type in their repr string
assert repr(core0) == "<Core 0>"
assert repr(flow0) == "<Flow 0>"
assert repr(group0) == "<Group 0>"
assert repr(core1) == "<Core 1>"
assert repr(flow1) == "<Flow 1>"
assert repr(group1) == "<Group 1>"
assert repr(core_foo) == "<Core 'foo'>"
assert repr(flow_bar) == "<Flow 'bar'>"
assert repr(group_baz) == "<Group 'baz'>"
def test_new_functions():
# Make sure the e.new_* functions all work as expected
e = Experiment(Mock())
# Types should be appropriate
core0 = e.new_core()
assert isinstance(core0, Core)
flow0 = e.new_flow(core0, core0)
assert isinstance(flow0, Flow)
group0 = e.new_group()
assert isinstance(group0, Group)
# Everything should be given unique names
core1 = e.new_core()
flow1 = e.new_flow(core1, core1)
group1 = e.new_group()
assert core0.name != core1.name
assert flow0.name != flow1.name
assert group0.name != group1.name
# Custom names should be allowed
core_foo = e.new_core(name="foo")
flow_bar = e.new_flow(core_foo, core_foo, name="bar")
group_baz = e.new_group(name="baz")
assert core_foo.name == "foo"
assert flow_bar.name == "bar"
assert group_baz.name == "baz"
# The objects should all give their name/type in their repr string
assert repr(core0) == "<Core 0>"
assert repr(flow0) == "<Flow 0>"
assert repr(group0) == "<Group 0>"
assert repr(core1) == "<Core 1>"
assert repr(flow1) == "<Flow 1>"
assert repr(group1) == "<Group 1>"
assert repr(core_foo) == "<Core 'foo'>"
assert repr(flow_bar) == "<Flow 'bar'>"
assert repr(group_baz) == "<Group 'baz'>"
def test_to_csv():
"""Make sure the CSV conversion utility actually works..."""
dt = np.dtype([("a", np.uint), ("b", np.double), ("c", object)])
e = Experiment(Mock())
g0 = e.new_group("g0")
g1 = e.new_group(1)
c0 = e.new_core(name="c0")
c1 = e.new_core(name=1)
f0 = e.new_flow(c0, c0, name="f0")
f1 = e.new_flow(c1, c1, name=1)
# Empty dataset
assert to_csv(np.zeros((0, ), dtype=dt)) == "a,b,c"
assert to_csv(np.zeros((0, ), dtype=dt), False) == ""
# Standard data types should be handled correctly
a = np.zeros((2, ), dtype=dt)
assert to_csv(a) == ("a,b,c\n" "0,0.0,0\n" "0,0.0,0")
assert to_csv(a, False) == ("0,0.0,0\n" "0,0.0,0")
# Nones should be printed specially
a["c"][0] = None
assert to_csv(a) == ("a,b,c\n" "0,0.0,NA\n" "0,0.0,0")
# Groups, Flows and Cores should be printed specially
a = np.zeros((6, ), dtype=dt)
a["c"][0] = g0
a["c"][1] = g1
a["c"][2] = c0
a["c"][3] = c1
a["c"][4] = f0
a["c"][5] = f1
assert to_csv(a) == ("a,b,c\n"
"0,0.0,g0\n"
"0,0.0,1\n"
"0,0.0,c0\n"
"0,0.0,1\n"
"0,0.0,f0\n"
"0,0.0,1")
def test_get_core_record_lookup():
# Make sure this internal utility produces appropriate results.
e = Experiment(Mock())
# Two cores, one will eventually record router values, the other will not.
core0 = e.new_core()
core1 = e.new_core()
cores = [core0, core1]
e._placements = {core0: (0, 0), core1: (0, 0)}
e._router_recording_cores = set()
# Two flows, one connected loop-back, one connected to the other core.
flow0 = e.new_flow(core0, core0)
flow1 = e.new_flow(core0, core1)
cores_source_flows = {core0: [flow0, flow1], core1: []}
cores_sink_flows = {core0: [flow0], core1: [flow1]}
# If nothing is being recorded, the sets should just contain permanent
# counters
cores_records = e._get_core_record_lookup(cores, cores_source_flows,
cores_sink_flows)
assert cores_records == {
core0: [(core0, Counters.deadlines_missed)],
core1: [(core1, Counters.deadlines_missed)],
}
# If only core counters are being used, they should be included
e.record_sent = True
e.record_received = True
cores_records = e._get_core_record_lookup(cores, cores_source_flows,
cores_sink_flows)
assert cores_records == {
core0: [(core0, Counters.deadlines_missed), (flow0, Counters.sent),
(flow1, Counters.sent), (flow0, Counters.received)],
core1: [(core1, Counters.deadlines_missed),
(flow1, Counters.received)],
}
# If any routing table entries are present, they should be added to
# anything in the router_recording_cores lookup.
e._router_recording_cores = set([core0])
e.record_external_multicast = True
cores_records = e._get_core_record_lookup(cores, cores_source_flows,
cores_sink_flows)
assert cores_records == {
core0: [(core0, Counters.deadlines_missed),
((0, 0), Counters.external_multicast), (flow0, Counters.sent),
(flow1, Counters.sent), (flow0, Counters.received)],
core1: [(core1, Counters.deadlines_missed),
(flow1, Counters.received)],
}
def test_new_flow():
# Make sure flows are created and the arguments are those supported by
# Rig's Net construct.
e = Experiment(Mock())
cores = [e.new_core() for _ in range(10)]
# Arguments should be passed through
flow = e.new_flow(cores[0], cores[1:])
assert isinstance(flow, RigNet)
assert flow.source == cores[0]
assert flow.sinks == cores[1:]
assert flow.weight == 1.0
# As should kwargs
flow = e.new_flow(source=cores[0], sinks=cores[9], weight=123)
assert isinstance(flow, RigNet)
assert flow.source == cores[0]
assert flow.sinks == [cores[9]]
assert flow.weight == 123
def test_new_flow():
# Make sure flows are created and the arguments are those supported by
# Rig's Net construct.
e = Experiment(Mock())
cores = [e.new_core() for _ in range(10)]
# Arguments should be passed through
flow = e.new_flow(cores[0], cores[1:])
assert isinstance(flow, RigNet)
assert flow.source == cores[0]
assert flow.sinks == cores[1:]
assert flow.weight == 1.0
# As should kwargs
flow = e.new_flow(source=cores[0], sinks=cores[9], weight=123)
assert isinstance(flow, RigNet)
assert flow.source == cores[0]
assert flow.sinks == [cores[9]]
assert flow.weight == 123
def test_errors(cores_result_data, expected_errors):
"""Test that we can produce a Result object for various scenarios where no
results will exist."""
experiment = Experiment(Mock())
cores_result_data = {experiment.new_core(): d for d in cores_result_data}
cores = list(cores_result_data)
flows = []
router_recording_cores = set()
placements = {}
routes = {}
groups = {}
cores_records = {c: [] for c in cores}
r = Results(experiment, cores, flows, cores_records,
router_recording_cores, placements, routes, cores_result_data,
groups)
assert r.errors == expected_errors
if expected_errors:
assert "error" in repr(r)
else:
assert "error" not in repr(r)
def test_option_getters_setters():
"""Make sure the internal option get/set API works."""
e = Experiment(Mock())
group0 = e.new_group()
core0 = e.new_core()
core1 = e.new_core()
flow0 = e.new_flow(core0, core1)
flow1 = e.new_flow(core1, core0)
# Make sure the getters setters use specific values with the correct
# priority.
# Should get global (default) value
assert e._get_option_value("timestep") == 0.001
assert e._get_option_value("timestep", group=group0) == 0.001
assert e._get_option_value("timestep", core_or_flow=core0) == 0.001
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.001
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 0.001
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 0.001
# Should be able to change the default value
e._set_option_value("timestep", 0.1)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 0.1
assert e._get_option_value("timestep", core_or_flow=core0) == 0.1
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.1
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 0.1
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 0.1
# Should be able to change the value for a particular core
e._set_option_value("timestep", 0.5, core_or_flow=core0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 0.1
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 0.5
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 0.5
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow1) == 0.1
# Should be able to change the value for a particular flow
e._set_option_value("timestep", 0.6, core_or_flow=flow0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 0.1
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 0.5
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow1) == 0.1
# Should be able to change the value for a particular group (core/flow
# values should override still)
e._set_option_value("timestep", 1.0, group=group0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 0.5
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow1) == 1.0
# Should be able to change the value for a particular core-group pair and
# the flow value should still take priority
e._set_option_value("timestep", 10.0, group=group0, core_or_flow=core0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 10.0
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 0.6
# Should be able to change the value for a particular core-group pair and
# implicitly set a flow value which has not been overridden.
e._set_option_value("timestep", 20.0, group=group0, core_or_flow=core1)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core1) == 0.1
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core1) == 20.0
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow1) == 20.0
# Should be able to change the value for a particular flow-group pair and
# it should take priority over anything else in that group.
e._set_option_value("timestep", 30.0, group=group0, core_or_flow=flow0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep",
group=group0,
core_or_flow=core0) == 10.0
assert e._get_option_value("timestep",
group=group0,
core_or_flow=flow0) == 30.0
# Should be able to get values which don't support exceptions
assert e._get_option_value("record_sent") is False
assert e._get_option_value("record_sent", group=group0) is False
assert e._get_option_value("record_sent", core_or_flow=core0) is False
assert e._get_option_value("record_sent",
group=group0,
core_or_flow=core0) is False
# Should be able to set values which don't support exceptions
e._set_option_value("record_sent", True)
assert e._get_option_value("record_sent") is True
assert e._get_option_value("record_sent", group=group0) is True
assert e._get_option_value("record_sent", core_or_flow=core0) is True
assert e._get_option_value("record_sent",
group=group0,
core_or_flow=core0) is True
# Shouldn't be able to set exceptions to options which don't support them
with pytest.raises(ValueError):
e._set_option_value("record_sent", False, group=group0)
with pytest.raises(ValueError):
e._set_option_value("record_sent", False, core_or_flow=core0)
with pytest.raises(ValueError):
e._set_option_value("record_sent",
False,
group=group0,
core_or_flow=core0)
def test_run(auto_create_group, samples_per_group, num_cores,
num_flows_per_core, error, error_code, record, reinject_packets):
"""Make sure that the run command carries out an experiment as would be
expected."""
system_info = SystemInfo(3, 1, {
(x, y): ChipInfo(num_cores=18,
core_states=[AppState.run] + [AppState.idle] * 17,
working_links=set(Links),
largest_free_sdram_block=110*1024*1024,
largest_free_sram_block=1024*1024)
for x in range(3)
for y in range(1)
})
mock_mc = Mock()
mock_mc.get_system_info.return_value = system_info
mock_application_ctx = Mock()
mock_application_ctx.__enter__ = Mock()
mock_application_ctx.__exit__ = Mock()
mock_mc.application.return_value = mock_application_ctx
if reinject_packets:
# If reinjecting, a core is added to every chip
mock_mc.wait_for_cores_to_reach_state.return_value = len(system_info)
else:
# If not reinjecting, only the user-defined cores exist
mock_mc.wait_for_cores_to_reach_state.return_value = num_cores
def mock_sdram_file_read(size):
return error_code + b"\0"*(size - 4)
mock_sdram_file = Mock()
mock_sdram_file.read.side_effect = mock_sdram_file_read
mock_mc.sdram_alloc_as_filelike.return_value = mock_sdram_file
e = Experiment(mock_mc)
e.timestep = 1e-6
e.warmup = 0.01
e.duration = 0.01
e.cooldown = 0.01
e.flush_time = 0.01
# Record the result of _construct_core_commands to allow checking of
# memory allocation sizes
construct_core_commands = e._construct_core_commands
cores_commands = {}
def wrapped_construct_core_commands(core, *args, **kwargs):
commands = construct_core_commands(core=core, *args, **kwargs)
cores_commands[core] = commands
return commands
e._construct_core_commands = Mock(
side_effect=wrapped_construct_core_commands)
if record:
e.record_sent = True
e.reinject_packets = reinject_packets
# Create example cores. Cores are placed on sequential chips along the
# x-axis.
cores = [e.new_core(x, 0) for x in range(num_cores)]
for c in cores:
for _ in range(num_flows_per_core):
e.new_flow(c, c)
# Create example groups
for num_samples in samples_per_group:
with e.new_group():
e.record_interval = e.duration / float(num_samples)
# The run should fail with an exception when expected.
if error and (num_cores > 0 or reinject_packets):
with pytest.raises(NetworkTesterError) as exc_info:
e.run(0x33, create_group_if_none_exist=auto_create_group)
results = exc_info.value.results
else:
results = e.run(0x33, create_group_if_none_exist=auto_create_group)
# The results should be of the correct type...
assert isinstance(results, Results)
# The results returned should be all zeros (since that is what was written
# back)
if record and num_cores > 0 and num_flows_per_core > 0:
assert sum(results.totals()["sent"]) == 0
# The supplied app ID should be used
mock_mc.application.assert_called_once_with(0x33)
# If reinjection is enabled, the binary should have been loaded
print([call[1][0] for call in mock_mc.load_application.mock_calls])
reinjector_loaded = any((len(call[1][0]) == 1 and
"reinjector.aplx" in list(call[1][0])[0])
for call in mock_mc.load_application.mock_calls)
if reinject_packets:
assert reinjector_loaded
else:
assert not reinjector_loaded
# Each chip should have been issued with a suitable malloc for any cores
# on it.
for x, core in enumerate(cores):
cmds_size = cores_commands[core].size
if record:
# The space required to record deadlines_missed and the sent
# counters.
result_size = (1 + ((1 + num_flows_per_core) *
sum(samples_per_group))) * 4
else:
# Just the status value and deadlines_missed
result_size = (1 + sum(samples_per_group)) * 4
size = max(cmds_size, result_size)
core_num = e._allocations[core][Cores].start
mock_mc.sdram_alloc_as_filelike.assert_any_call(size, x=x, y=0,
tag=core_num)
# The correct number of barriers should have been reached
num_groups = len(samples_per_group)
if auto_create_group:
num_groups = max(1, num_groups)
assert len(mock_mc.send_signal.mock_calls) == num_groups
def test_option_descriptors():
"""Make sure the option descriptors work."""
e = Experiment(Mock())
# Defualts should work
assert e.seed is None
assert e.probability == 1.0
# Should be able to set
e.probability = 0.1
assert e.probability == 0.1
# Should be able to set exceptions for groups
with e.new_group():
assert e.probability == 0.1
e.probability = 1.0
assert e.probability == 1.0
assert e.probability == 0.1
# Should be able to set non-exception-supporting options globally
assert e.record_sent is False
e.record_sent = True
assert e.record_sent is True
# Should be able to set exceptions for cores
core0 = e.new_core()
assert core0.probability == 0.1
core0.probability = 0.5
assert core0.probability == 0.5
assert e.probability == 0.1
# Should be able to set exceptions for flows
flow0 = e.new_flow(core0, core0)
assert flow0.probability == 0.5
flow0.probability = 0.6
assert flow0.probability == 0.6
assert core0.probability == 0.5
assert e.probability == 0.1
# Should be able to set exceptions in groups for cores and flows
with e.new_group():
assert e.probability == 0.1
assert core0.probability == 0.5
assert flow0.probability == 0.6
# Group probability shouldn't override core/flow probability
e.probability = 1.0
assert e.probability == 1.0
assert core0.probability == 0.5
assert flow0.probability == 0.6
# Group+core probability should take precidence (but not over flows)
core0.probability = 10.0
assert e.probability == 1.0
assert core0.probability == 10.0
assert flow0.probability == 0.6
# Group+flow probability should take overall precidence
flow0.probability = 20.0
assert e.probability == 1.0
assert core0.probability == 10.0
assert flow0.probability == 20.0
# Should be able to get non-exception supporting options
assert e.record_sent is True
# Shouldn't be able to set non-exception-supporting options
with pytest.raises(ValueError):
e.record_sent = False
# ...but only within the group
assert e.probability == 0.1
assert core0.probability == 0.5
assert flow0.probability == 0.6
def test_construct_core_commands(router_access_core):
# XXX: This test is *very* far from being complete. In particular, though
# the problem supplied is realistic, the output is not checked thouroughly
# enough.
e = Experiment(Mock())
# A simple example network as follows:
# f0
# c0 ---+--> c1
# | '--> c2
# +-------> c3
# f1
# We'll pretend all of them are on the same chip and core0 is the one
# designated as the router-value recording core.
core0 = e.new_core()
core1 = e.new_core()
core2 = e.new_core()
core3 = e.new_core()
cores = [core0, core1, core2, core3]
flow0 = e.new_flow(core0, [core1, core2])
flow1 = e.new_flow(core0, core3)
# Seed randomly
e.seed = None
e.timestep = 1e-6
e.warmup = 0.001
e.duration = 1.0
e.cooldown = 0.001
e.flush_time = 0.01
e.record_sent = True
e.reinject_packets = True
# By default, nothing should send and everything should consume
e.probability = 0.0
e.consume = True
e.router_timeout = 240
# In group0, everything consumes and f0 sends 100% packets and f1 sends 50%
# packets.
with e.new_group():
flow0.probability = 1.0
flow1.probability = 0.5
# In group1, nothing consumes and f0 and f1 send 100%
with e.new_group():
flow0.probability = 1.0
flow1.probability = 1.0
e.consume = False
e.router_timeout = 0
# In group2, we have a timeout with emergency routing enabled
with e.new_group():
e.router_timeout = (16, 16)
flow_keys = {flow0: 0xAA00, flow1: 0xBB00}
cores_source_flows = {
core0: [flow0, flow1],
core1: [],
core2: [],
core3: [],
}
cores_sink_flows = {
core0: [],
core1: [flow0],
core2: [flow0],
core3: [flow1],
}
core_commands = {
core: e._construct_core_commands(
core=core,
source_flows=cores_source_flows[core],
sink_flows=cores_sink_flows[core],
flow_keys=flow_keys,
records=[Counters.deadlines_missed, Counters.sent],
router_access_core=router_access_core).pack()
for core in cores
}
# Make sure all cores have the right number of sources/sinks set
for core in cores:
commands = core_commands[core]
num_sources = len(cores_source_flows[core])
num_sinks = len(cores_sink_flows[core])
ref_cmd = struct.pack("<II", NT_CMD.NUM,
(num_sources | num_sinks << 16))
assert ref_cmd in commands
# Make sure all cores have the right set of sources and sinks
for core in cores:
commands = core_commands[core]
sources = cores_source_flows[core]
sinks = cores_sink_flows[core]
for source_num, source_flow in enumerate(sources):
ref_cmd = struct.pack("<II", NT_CMD.SOURCE_KEY | (source_num << 8),
flow_keys[source_flow])
assert ref_cmd in commands
for sink_num, sink_flow in enumerate(sinks):
ref_cmd = struct.pack("<II", NT_CMD.SINK_KEY | (sink_num << 8),
flow_keys[sink_flow])
assert ref_cmd in commands
# Make sure all cores have the right set of timing values
for core in cores:
commands = core_commands[core]
ref_cmd = struct.pack("<II", NT_CMD.TIMESTEP, 1000)
assert ref_cmd in commands
# Make sure all cores have the right timeout set
for core in cores:
commands = core_commands[core]
ref_cmd0 = struct.pack("<I", NT_CMD.ROUTER_TIMEOUT)
ref_cmd1 = struct.pack("<I", NT_CMD.ROUTER_TIMEOUT_RESTORE)
if router_access_core:
assert ref_cmd0 in commands
assert ref_cmd1 in commands
else:
assert ref_cmd0 not in commands
assert ref_cmd1 not in commands
# Make sure all cores packet reinjection enabled if requested
for core in cores:
commands = core_commands[core]
ref_cmd0 = struct.pack("<I", NT_CMD.REINJECTION_ENABLE)
ref_cmd1 = struct.pack("<I", NT_CMD.REINJECTION_DISABLE)
if router_access_core:
assert ref_cmd0 in commands
assert ref_cmd1 in commands
else:
assert ref_cmd0 not in commands
assert ref_cmd1 not in commands
def test_place_and_route(record_reinjected):
mock_mc = Mock()
mock_mc.get_system_info.return_value = SystemInfo(2, 2, {
(x, y): ChipInfo(num_cores=18,
core_states=[AppState.run] + [AppState.idle] * 17,
working_links=set(Links),
largest_free_sdram_block=110*1024*1024,
largest_free_sram_block=1024*1024)
for x in range(2)
for y in range(2)
})
mock_place = Mock(side_effect=place)
mock_allocate = Mock(side_effect=allocate)
mock_route = Mock(side_effect=route)
e = Experiment(mock_mc)
c0 = e.new_core(0, 0)
c1 = e.new_core()
f0 = e.new_flow(c0, c1)
e.record_reinjected = record_reinjected
# Prior to place-and-route the placements, allocations and routes should
# not be available
with pytest.raises(AttributeError):
e.placements
with pytest.raises(AttributeError):
e.allocations
with pytest.raises(AttributeError):
e.routes
e._place_and_route(place=mock_place,
allocate=mock_allocate,
route=mock_route)
assert mock_place.called
assert mock_allocate.called
assert mock_route.called
# Check constraints
constraints = list(mock_place.mock_calls[0][2]["constraints"])
# Should reserve core 0 as the monitor
reserved_monitor = False
for i, constraint in enumerate(constraints): # pragma: no branch
if ( # pragma: no branch
isinstance(constraint, ReserveResourceConstraint) and
constraint.resource is Cores and
constraint.reservation == slice(0, 1) and
constraint.location is None):
reserved_monitor = True
del constraints[i]
break
assert reserved_monitor
# Should force the location of c0
c0_constrained = False
for i, constraint in enumerate(constraints): # pragma: no branch
if (isinstance(constraint, LocationConstraint) and # pragma: no branch
constraint.vertex is c0 and
constraint.location == (0, 0)):
c0_constrained = True
del constraints[i]
break
assert c0_constrained
# If reinjection is used, a reinjection core should have been added for
# each chip. Record it in a dict {(x, y): _ReinjectionCore, ...}
reinjection_cores = {}
for i, constraint in reversed( # pragma: no branch
list(enumerate(constraints))):
if (isinstance(constraint, LocationConstraint) and # pragma: no branch
isinstance(constraint.vertex, _ReinjectionCore)):
reinjection_cores[constraint.location] = constraint.vertex
del constraints[i]
if record_reinjected:
# Should have one reinjection core per chip
assert set(reinjection_cores) == set(e.system_info)
else:
assert len(reinjection_cores) == 0
# No other constraints should exist
assert len(constraints) == 0
# Check that recording cores were not added to chips which already had a
# core on.
router_recording_cores = set(e._placements).difference(
set([c0, c1]).union(set(itervalues(reinjection_cores)))
)
core_placements = set([e._placements[c0], e._placements[c1]])
assert core_placements.isdisjoint( # pragma: no branch
set(e._placements[c] for c in router_recording_cores))
# Check that all chips have a router-recording vertex if reinjection is
# used but otherwise no cores have been added.
if record_reinjected:
all_used_chips = core_placements.union(
set(e._placements[c] for c in router_recording_cores))
assert all_used_chips == set(e.system_info)
else:
assert len(router_recording_cores) == 0
# In the placements and allocations reported we should have include the
# extra cores for recording and reinjection.
assert set(e._placements) == set(e._allocations)
# The routes generated should correspond to the flows created
assert set(e._routes) == set([f0])
# Finally, check the placements, allocations and routes reported back only
# include user-created vertices.
assert set(e.placements) == set([c0, c1])
assert set(e.allocations) == set([c0, c1])
assert set(e.routes) == set([f0])
def test_place_and_route(record_reinjected):
mock_mc = Mock()
mock_mc.get_system_info.return_value = SystemInfo(
2, 2,
{(x, y): ChipInfo(num_cores=18,
core_states=[AppState.run] + [AppState.idle] * 17,
working_links=set(Links),
largest_free_sdram_block=110 * 1024 * 1024,
largest_free_sram_block=1024 * 1024)
for x in range(2) for y in range(2)})
mock_place = Mock(side_effect=place)
mock_allocate = Mock(side_effect=allocate)
mock_route = Mock(side_effect=route)
e = Experiment(mock_mc)
c0 = e.new_core(0, 0)
c1 = e.new_core()
f0 = e.new_flow(c0, c1)
e.record_reinjected = record_reinjected
# Prior to place-and-route the placements, allocations and routes should
# not be available
with pytest.raises(AttributeError):
e.placements
with pytest.raises(AttributeError):
e.allocations
with pytest.raises(AttributeError):
e.routes
e._place_and_route(place=mock_place,
allocate=mock_allocate,
route=mock_route)
assert mock_place.called
assert mock_allocate.called
assert mock_route.called
# Check constraints
constraints = list(mock_place.mock_calls[0][2]["constraints"])
# Should reserve core 0 as the monitor
reserved_monitor = False
for i, constraint in enumerate(constraints): # pragma: no branch
if ( # pragma: no branch
isinstance(constraint, ReserveResourceConstraint)
and constraint.resource is Cores
and constraint.reservation == slice(0, 1)
and constraint.location is None):
reserved_monitor = True
del constraints[i]
break
assert reserved_monitor
# Should force the location of c0
c0_constrained = False
for i, constraint in enumerate(constraints): # pragma: no branch
if (isinstance(constraint, LocationConstraint) and # pragma: no branch
constraint.vertex is c0 and constraint.location == (0, 0)):
c0_constrained = True
del constraints[i]
break
assert c0_constrained
# If reinjection is used, a reinjection core should have been added for
# each chip. Record it in a dict {(x, y): _ReinjectionCore, ...}
reinjection_cores = {}
for i, constraint in reversed( # pragma: no branch
list(enumerate(constraints))):
if (isinstance(constraint, LocationConstraint) and # pragma: no branch
isinstance(constraint.vertex, _ReinjectionCore)):
reinjection_cores[constraint.location] = constraint.vertex
del constraints[i]
if record_reinjected:
# Should have one reinjection core per chip
assert set(reinjection_cores) == set(e.system_info)
else:
assert len(reinjection_cores) == 0
# No other constraints should exist
assert len(constraints) == 0
# Check that recording cores were not added to chips which already had a
# core on.
router_recording_cores = set(e._placements).difference(
set([c0, c1]).union(set(itervalues(reinjection_cores))))
core_placements = set([e._placements[c0], e._placements[c1]])
assert core_placements.isdisjoint( # pragma: no branch
set(e._placements[c] for c in router_recording_cores))
# Check that all chips have a router-recording vertex if reinjection is
# used but otherwise no cores have been added.
if record_reinjected:
all_used_chips = core_placements.union(
set(e._placements[c] for c in router_recording_cores))
assert all_used_chips == set(e.system_info)
else:
assert len(router_recording_cores) == 0
# In the placements and allocations reported we should have include the
# extra cores for recording and reinjection.
assert set(e._placements) == set(e._allocations)
# The routes generated should correspond to the flows created
assert set(e._routes) == set([f0])
# Finally, check the placements, allocations and routes reported back only
# include user-created vertices.
assert set(e.placements) == set([c0, c1])
assert set(e.allocations) == set([c0, c1])
assert set(e.routes) == set([f0])
def test_option_descriptors():
"""Make sure the option descriptors work."""
e = Experiment(Mock())
# Defualts should work
assert e.seed is None
assert e.probability == 1.0
# Should be able to set
e.probability = 0.1
assert e.probability == 0.1
# Should be able to set exceptions for groups
with e.new_group():
assert e.probability == 0.1
e.probability = 1.0
assert e.probability == 1.0
assert e.probability == 0.1
# Should be able to set non-exception-supporting options globally
assert e.record_sent is False
e.record_sent = True
assert e.record_sent is True
# Should be able to set exceptions for cores
core0 = e.new_core()
assert core0.probability == 0.1
core0.probability = 0.5
assert core0.probability == 0.5
assert e.probability == 0.1
# Should be able to set exceptions for flows
flow0 = e.new_flow(core0, core0)
assert flow0.probability == 0.5
flow0.probability = 0.6
assert flow0.probability == 0.6
assert core0.probability == 0.5
assert e.probability == 0.1
# Should be able to set exceptions in groups for cores and flows
with e.new_group():
assert e.probability == 0.1
assert core0.probability == 0.5
assert flow0.probability == 0.6
# Group probability shouldn't override core/flow probability
e.probability = 1.0
assert e.probability == 1.0
assert core0.probability == 0.5
assert flow0.probability == 0.6
# Group+core probability should take precidence (but not over flows)
core0.probability = 10.0
assert e.probability == 1.0
assert core0.probability == 10.0
assert flow0.probability == 0.6
# Group+flow probability should take overall precidence
flow0.probability = 20.0
assert e.probability == 1.0
assert core0.probability == 10.0
assert flow0.probability == 20.0
# Should be able to get non-exception supporting options
assert e.record_sent is True
# Shouldn't be able to set non-exception-supporting options
with pytest.raises(ValueError):
e.record_sent = False
# ...but only within the group
assert e.probability == 0.1
assert core0.probability == 0.5
assert flow0.probability == 0.6
def test_option_getters_setters():
"""Make sure the internal option get/set API works."""
e = Experiment(Mock())
group0 = e.new_group()
core0 = e.new_core()
core1 = e.new_core()
flow0 = e.new_flow(core0, core1)
flow1 = e.new_flow(core1, core0)
# Make sure the getters setters use specific values with the correct
# priority.
# Should get global (default) value
assert e._get_option_value("timestep") == 0.001
assert e._get_option_value("timestep", group=group0) == 0.001
assert e._get_option_value("timestep", core_or_flow=core0) == 0.001
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.001
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 0.001
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 0.001
# Should be able to change the default value
e._set_option_value("timestep", 0.1)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 0.1
assert e._get_option_value("timestep", core_or_flow=core0) == 0.1
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.1
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 0.1
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 0.1
# Should be able to change the value for a particular core
e._set_option_value("timestep", 0.5, core_or_flow=core0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 0.1
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 0.5
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow1) == 0.1
# Should be able to change the value for a particular flow
e._set_option_value("timestep", 0.6, core_or_flow=flow0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 0.1
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow1) == 0.1
# Should be able to change the value for a particular group (core/flow
# values should override still)
e._set_option_value("timestep", 1.0, group=group0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow1) == 1.0
# Should be able to change the value for a particular core-group pair and
# the flow value should still take priority
e._set_option_value("timestep", 10.0, group=group0, core_or_flow=core0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 10.0
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 0.6
# Should be able to change the value for a particular core-group pair and
# implicitly set a flow value which has not been overridden.
e._set_option_value("timestep", 20.0, group=group0, core_or_flow=core1)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core1) == 0.1
assert e._get_option_value("timestep", core_or_flow=flow1) == 0.1
assert e._get_option_value("timestep", group=group0,
core_or_flow=core1) == 20.0
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow1) == 20.0
# Should be able to change the value for a particular flow-group pair and
# it should take priority over anything else in that group.
e._set_option_value("timestep", 30.0, group=group0, core_or_flow=flow0)
assert e._get_option_value("timestep") == 0.1
assert e._get_option_value("timestep", group=group0) == 1.0
assert e._get_option_value("timestep", core_or_flow=core0) == 0.5
assert e._get_option_value("timestep", core_or_flow=flow0) == 0.6
assert e._get_option_value("timestep", group=group0,
core_or_flow=core0) == 10.0
assert e._get_option_value("timestep", group=group0,
core_or_flow=flow0) == 30.0
# Should be able to get values which don't support exceptions
assert e._get_option_value("record_sent") is False
assert e._get_option_value("record_sent", group=group0) is False
assert e._get_option_value("record_sent", core_or_flow=core0) is False
assert e._get_option_value("record_sent", group=group0,
core_or_flow=core0) is False
# Should be able to set values which don't support exceptions
e._set_option_value("record_sent", True)
assert e._get_option_value("record_sent") is True
assert e._get_option_value("record_sent", group=group0) is True
assert e._get_option_value("record_sent", core_or_flow=core0) is True
assert e._get_option_value("record_sent", group=group0,
core_or_flow=core0) is True
# Shouldn't be able to set exceptions to options which don't support them
with pytest.raises(ValueError):
e._set_option_value("record_sent", False, group=group0)
with pytest.raises(ValueError):
e._set_option_value("record_sent", False, core_or_flow=core0)
with pytest.raises(ValueError):
e._set_option_value("record_sent",
False,
group=group0,
core_or_flow=core0)
def test_run(auto_create_group, samples_per_group, num_cores,
num_flows_per_core, error, error_code, record, reinject_packets):
"""Make sure that the run command carries out an experiment as would be
expected."""
system_info = SystemInfo(
3, 1,
{(x, y): ChipInfo(num_cores=18,
core_states=[AppState.run] + [AppState.idle] * 17,
working_links=set(Links),
largest_free_sdram_block=110 * 1024 * 1024,
largest_free_sram_block=1024 * 1024)
for x in range(3) for y in range(1)})
mock_mc = Mock()
mock_mc.get_system_info.return_value = system_info
mock_application_ctx = Mock()
mock_application_ctx.__enter__ = Mock()
mock_application_ctx.__exit__ = Mock()
mock_mc.application.return_value = mock_application_ctx
if reinject_packets:
# If reinjecting, a core is added to every chip
mock_mc.wait_for_cores_to_reach_state.return_value = len(system_info)
else:
# If not reinjecting, only the user-defined cores exist
mock_mc.wait_for_cores_to_reach_state.return_value = num_cores
def mock_sdram_file_read(size):
return error_code + b"\0" * (size - 4)
mock_sdram_file = Mock()
mock_sdram_file.read.side_effect = mock_sdram_file_read
mock_mc.sdram_alloc_as_filelike.return_value = mock_sdram_file
e = Experiment(mock_mc)
e.timestep = 1e-6
e.warmup = 0.01
e.duration = 0.01
e.cooldown = 0.01
e.flush_time = 0.01
# Record the result of _construct_core_commands to allow checking of
# memory allocation sizes
construct_core_commands = e._construct_core_commands
cores_commands = {}
def wrapped_construct_core_commands(core, *args, **kwargs):
commands = construct_core_commands(core=core, *args, **kwargs)
cores_commands[core] = commands
return commands
e._construct_core_commands = Mock(
side_effect=wrapped_construct_core_commands)
if record:
e.record_sent = True
e.reinject_packets = reinject_packets
# Create example cores. Cores are placed on sequential chips along the
# x-axis.
cores = [e.new_core(x, 0) for x in range(num_cores)]
for c in cores:
for _ in range(num_flows_per_core):
e.new_flow(c, c)
# Create example groups
for num_samples in samples_per_group:
with e.new_group():
e.record_interval = e.duration / float(num_samples)
# The run should fail with an exception when expected.
if error and (num_cores > 0 or reinject_packets):
with pytest.raises(NetworkTesterError) as exc_info:
e.run(0x33, create_group_if_none_exist=auto_create_group)
results = exc_info.value.results
else:
results = e.run(0x33, create_group_if_none_exist=auto_create_group)
# The results should be of the correct type...
assert isinstance(results, Results)
# The results returned should be all zeros (since that is what was written
# back)
if record and num_cores > 0 and num_flows_per_core > 0:
assert sum(results.totals()["sent"]) == 0
# The supplied app ID should be used
mock_mc.application.assert_called_once_with(0x33)
# If reinjection is enabled, the binary should have been loaded
print([call[1][0] for call in mock_mc.load_application.mock_calls])
reinjector_loaded = any(
(len(call[1][0]) == 1 and "reinjector.aplx" in list(call[1][0])[0])
for call in mock_mc.load_application.mock_calls)
if reinject_packets:
assert reinjector_loaded
else:
assert not reinjector_loaded
# Each chip should have been issued with a suitable malloc for any cores
# on it.
for x, core in enumerate(cores):
cmds_size = cores_commands[core].size
if record:
# The space required to record deadlines_missed and the sent
# counters.
result_size = (1 + (
(1 + num_flows_per_core) * sum(samples_per_group))) * 4
else:
# Just the status value and deadlines_missed
result_size = (1 + sum(samples_per_group)) * 4
size = max(cmds_size, result_size)
core_num = e._allocations[core][Cores].start
mock_mc.sdram_alloc_as_filelike.assert_any_call(size,
x=x,
y=0,
tag=core_num)
# The correct number of barriers should have been reached
num_groups = len(samples_per_group)
if auto_create_group:
num_groups = max(1, num_groups)
assert len(mock_mc.send_signal.mock_calls) == num_groups
def test_construct_core_commands(router_access_core):
# XXX: This test is *very* far from being complete. In particular, though
# the problem supplied is realistic, the output is not checked thouroughly
# enough.
e = Experiment(Mock())
# A simple example network as follows:
# f0
# c0 ---+--> c1
# | '--> c2
# +-------> c3
# f1
# We'll pretend all of them are on the same chip and core0 is the one
# designated as the router-value recording core.
core0 = e.new_core()
core1 = e.new_core()
core2 = e.new_core()
core3 = e.new_core()
cores = [core0, core1, core2, core3]
flow0 = e.new_flow(core0, [core1, core2])
flow1 = e.new_flow(core0, core3)
# Seed randomly
e.seed = None
e.timestep = 1e-6
e.warmup = 0.001
e.duration = 1.0
e.cooldown = 0.001
e.flush_time = 0.01
e.record_sent = True
e.reinject_packets = True
# By default, nothing should send and everything should consume
e.probability = 0.0
e.consume = True
e.router_timeout = 240
# In group0, everything consumes and f0 sends 100% packets and f1 sends 50%
# packets.
with e.new_group():
flow0.probability = 1.0
flow1.probability = 0.5
# In group1, nothing consumes and f0 and f1 send 100%
with e.new_group():
flow0.probability = 1.0
flow1.probability = 1.0
e.consume = False
e.router_timeout = 0
# In group2, we have a timeout with emergency routing enabled
with e.new_group():
e.router_timeout = (16, 16)
flow_keys = {flow0: 0xAA00, flow1: 0xBB00}
cores_source_flows = {
core0: [flow0, flow1],
core1: [],
core2: [],
core3: [],
}
cores_sink_flows = {
core0: [],
core1: [flow0],
core2: [flow0],
core3: [flow1],
}
core_commands = {
core: e._construct_core_commands(
core=core,
source_flows=cores_source_flows[core],
sink_flows=cores_sink_flows[core],
flow_keys=flow_keys,
records=[Counters.deadlines_missed, Counters.sent],
router_access_core=router_access_core).pack()
for core in cores
}
# Make sure all cores have the right number of sources/sinks set
for core in cores:
commands = core_commands[core]
num_sources = len(cores_source_flows[core])
num_sinks = len(cores_sink_flows[core])
ref_cmd = struct.pack("<II", NT_CMD.NUM,
(num_sources | num_sinks << 16))
assert ref_cmd in commands
# Make sure all cores have the right set of sources and sinks
for core in cores:
commands = core_commands[core]
sources = cores_source_flows[core]
sinks = cores_sink_flows[core]
for source_num, source_flow in enumerate(sources):
ref_cmd = struct.pack("<II", NT_CMD.SOURCE_KEY | (source_num << 8),
flow_keys[source_flow])
assert ref_cmd in commands
for sink_num, sink_flow in enumerate(sinks):
ref_cmd = struct.pack("<II", NT_CMD.SINK_KEY | (sink_num << 8),
flow_keys[sink_flow])
assert ref_cmd in commands
# Make sure all cores have the right set of timing values
for core in cores:
commands = core_commands[core]
ref_cmd = struct.pack("<II", NT_CMD.TIMESTEP, 1000)
assert ref_cmd in commands
# Make sure all cores have the right timeout set
for core in cores:
commands = core_commands[core]
ref_cmd0 = struct.pack("<I", NT_CMD.ROUTER_TIMEOUT)
ref_cmd1 = struct.pack("<I", NT_CMD.ROUTER_TIMEOUT_RESTORE)
if router_access_core:
assert ref_cmd0 in commands
assert ref_cmd1 in commands
else:
assert ref_cmd0 not in commands
assert ref_cmd1 not in commands
# Make sure all cores packet reinjection enabled if requested
for core in cores:
commands = core_commands[core]
ref_cmd0 = struct.pack("<I", NT_CMD.REINJECTION_ENABLE)
ref_cmd1 = struct.pack("<I", NT_CMD.REINJECTION_DISABLE)
if router_access_core:
assert ref_cmd0 in commands
assert ref_cmd1 in commands
else:
assert ref_cmd0 not in commands
assert ref_cmd1 not in commands