async def test_double_buffer_to_event_model_parallel_dask(c, s, a, b):
source = Stream(asynchronous=True)
t = FromEventStream("event", ("data", "det_image"), source, principle=True)
assert t.principle
ts = t.scatter(backend="dask")
a = ts.map(slow_inc)
aa = ts.map(slow_inc)
n = a.zip(aa).SimpleToEventStream(("ct", ))
b = n.buffer(100).gather()
b.sink(print)
L = b.sink_to_list()
futures_L = []
tt = t.sink_to_list()
p = b.pluck(0).sink_to_list()
d = b.pluck(1).sink_to_list()
t0 = time.time()
for gg in y(10):
futures_L.append(gg)
await source.emit(gg)
while len(L) < len(futures_L):
await gen.sleep(.01)
t1 = time.time()
# check that this was faster than running in series
assert t1 - t0 < .5 * 10
assert tt
assert p == ["start", "descriptor"] + ["event"] * 10 + ["stop"]
assert d[1]["hints"] == {"analyzer": {"fields": ["ct"]}}
for gg in y(10):
futures_L.append(gg)
await source.emit(gg)
while len(L) < len(futures_L):
await gen.sleep(.01)
print(len(L), len(futures_L))
t1 = time.time()
# check that this was faster than running in series
assert t1 - t0 < .5 * 10
assert tt
assert p == (["start", "descriptor"] + ["event"] * 10 + ["stop"]) * 2
assert d[14]["hints"] == {"analyzer": {"fields": ["ct"]}}
for i, j in zip([0, 1, 12], [13, 14, 25]):
assert p[i] == p[j]
assert d[i] != d[j]
async def test_slow_to_event_model_parallel_dask(c, s, a, b):
source = Stream(asynchronous=True)
t = FromEventStream("event", ("data", "det_image"), source, principle=True)
assert t.principle
ts = t.scatter(backend="dask")
# futures_L = t.sink_to_list()
a = ts.map(slow_inc)
n = a.SimpleToEventStream(("ct", ))
b = n.buffer(100).gather()
b.sink(print)
L = b.sink_to_list()
tt = t.sink_to_list()
p = b.pluck(0).sink_to_list()
d = b.pluck(1).sink_to_list()
t0 = time.time()
futures_L = []
for gg in y(10):
futures_L.append(gg)
await source.emit(gg)
while len(L) < len(futures_L):
await gen.sleep(.01)
t1 = time.time()
# check that this was faster than running in series
td = t1 - t0
ted = .5 * 10
assert td < ted
assert tt
assert p == ["start", "descriptor"] + ["event"] * 10 + ["stop"]
assert "uid" in d[0]
assert d[1]["hints"] == {"analyzer": {"fields": ["ct"]}}
assert d[1]["data_keys"]["ct"]["dtype"] == "number"
assert d[2]["data"]["ct"] == 2