def test_get_async(ctx_factory):
context = ctx_factory()
queue = cl.CommandQueue(context)
device = queue.device
if device.platform.vendor == "The pocl project" \
and device.type & cl.device_type.GPU:
pytest.xfail("the async get test fails on POCL + Nvidia,"
"at least the K40, as of pocl 1.6, 2021-01-20")
a = np.random.rand(10**6).astype(np.dtype("float32"))
a_gpu = cl_array.to_device(queue, a)
b = a + a**5 + 1
b_gpu = a_gpu + a_gpu**5 + 1
# deprecated, but still test
b1 = b_gpu.get(async_=True) # testing that this waits for events
b_gpu.finish()
assert np.abs(b1 - b).mean() < 1e-5
b1, evt = b_gpu.get_async() # testing that this waits for events
evt.wait()
assert np.abs(b1 - b).mean() < 1e-5
wait_event = cl.UserEvent(context)
b_gpu.add_event(wait_event)
b, evt = b_gpu.get_async() # testing that this doesn't hang
wait_event.set_status(cl.command_execution_status.COMPLETE)
evt.wait()
assert np.abs(b1 - b).mean() < 1e-5
def test_event_set_callback(ctx_factory):
import sys
if sys.platform.startswith("win"):
pytest.xfail("Event.set_callback not present on Windows")
ctx = ctx_factory()
queue = cl.CommandQueue(ctx)
_xfail_if_pocl_gpu(queue.device, "event callbacks")
if ctx._get_cl_version() < (1, 1):
pytest.skip("OpenCL 1.1 or newer required for set_callback")
a_np = np.random.rand(50000).astype(np.float32)
b_np = np.random.rand(50000).astype(np.float32)
got_called = []
def cb(status):
got_called.append(status)
mf = cl.mem_flags
a_g = cl.Buffer(ctx, mf.READ_ONLY | mf.COPY_HOST_PTR, hostbuf=a_np)
b_g = cl.Buffer(ctx, mf.READ_ONLY | mf.COPY_HOST_PTR, hostbuf=b_np)
prg = cl.Program(
ctx, """
__kernel void sum(__global const float *a_g, __global const float *b_g,
__global float *res_g) {
int gid = get_global_id(0);
res_g[gid] = a_g[gid] + b_g[gid];
}
""").build()
res_g = cl.Buffer(ctx, mf.WRITE_ONLY, a_np.nbytes)
uevt = cl.UserEvent(ctx)
evt = prg.sum(queue, a_np.shape, None, a_g, b_g, res_g, wait_for=[uevt])
evt.set_callback(cl.command_execution_status.COMPLETE, cb)
uevt.set_status(cl.command_execution_status.COMPLETE)
queue.finish()
counter = 0
# yuck
while not got_called:
from time import sleep
sleep(0.01)
# wait up to five seconds (?!)
counter += 1
if counter >= 500:
break
assert got_called
def test_user_event(ctx_factory):
ctx = ctx_factory()
if (ctx._get_cl_version() < (1, 1) and cl.get_cl_header_version() <
(1, 1)):
from pytest import skip
skip("UserEvent is only available in OpenCL 1.1")
if ctx.devices[0].platform.name == "Portable Computing Language":
# https://github.com/pocl/pocl/issues/201
pytest.xfail("POCL's user events don't work right")
status = {}
def event_waiter1(e, key):
e.wait()
status[key] = True
def event_waiter2(e, key):
cl.wait_for_events([e])
status[key] = True
from threading import Thread
from time import sleep
evt = cl.UserEvent(ctx)
Thread(target=event_waiter1, args=(evt, 1)).start()
sleep(.05)
if status.get(1, False):
raise RuntimeError('UserEvent triggered before set_status')
evt.set_status(cl.command_execution_status.COMPLETE)
sleep(.05)
if not status.get(1, False):
raise RuntimeError('UserEvent.wait timeout')
assert evt.command_execution_status == cl.command_execution_status.COMPLETE
evt = cl.UserEvent(ctx)
Thread(target=event_waiter2, args=(evt, 2)).start()
sleep(.05)
if status.get(2, False):
raise RuntimeError('UserEvent triggered before set_status')
evt.set_status(cl.command_execution_status.COMPLETE)
sleep(.05)
if not status.get(2, False):
raise RuntimeError('cl.wait_for_events timeout on UserEvent')
assert evt.command_execution_status == cl.command_execution_status.COMPLETE
def test_user_event(ctx_factory):
ctx = ctx_factory()
if (ctx._get_cl_version() < (1, 1) and cl.get_cl_header_version() <
(1, 1)):
from pytest import skip
skip("UserEvent is only available in OpenCL 1.1")
status = {}
def event_waiter1(e, key):
e.wait()
status[key] = True
def event_waiter2(e, key):
cl.wait_for_events([e])
status[key] = True
from threading import Thread
from time import sleep
evt = cl.UserEvent(ctx)
Thread(target=event_waiter1, args=(evt, 1)).start()
sleep(.05)
if status.get(1, False):
raise RuntimeError('UserEvent triggered before set_status')
evt.set_status(cl.command_execution_status.COMPLETE)
sleep(.05)
if not status.get(1, False):
raise RuntimeError('UserEvent.wait timeout')
assert evt.command_execution_status == cl.command_execution_status.COMPLETE
evt = cl.UserEvent(ctx)
Thread(target=event_waiter2, args=(evt, 2)).start()
sleep(.05)
if status.get(2, False):
raise RuntimeError('UserEvent triggered before set_status')
evt.set_status(cl.command_execution_status.COMPLETE)
sleep(.05)
if not status.get(2, False):
raise RuntimeError('cl.wait_for_events timeout on UserEvent')
assert evt.command_execution_status == cl.command_execution_status.COMPLETE
def __call__(self,
global_size: KernelGridType = None,
local_size: KernelGridType = None,
**kwargs: Union[TypesClArray, object]) -> cl.Event:
# e.g. if two kernels of a program shall run concurrently, this can be enable by passing another queue here
queue = kwargs.pop('queue', get_current_queue())
global_size, local_size, args = self._prepare_arguments(
queue=queue,
knl=self.kernel_model,
global_size=global_size,
local_size=local_size,
**kwargs)
self.function(global_size, local_size, *args)
# create user event with context retrieved from first arg of type Array
event = cl.UserEvent([
_ for _ in args if isinstance(_, TypesClArray.__args__)
][0].context)
event.set_status(cl.command_execution_status.COMPLETE)
return event
def test_get_async(ctx_factory):
context = ctx_factory()
queue = cl.CommandQueue(context)
a = np.random.rand(10**6).astype(np.dtype('float32'))
a_gpu = cl_array.to_device(queue, a)
b = a + a**5 + 1
b_gpu = a_gpu + a_gpu**5 + 1
# deprecated, but still test
b1 = b_gpu.get(async_=True) # testing that this waits for events
b_gpu.finish()
assert np.abs(b1 - b).mean() < 1e-5
b1, evt = b_gpu.get_async() # testing that this waits for events
evt.wait()
assert np.abs(b1 - b).mean() < 1e-5
wait_event = cl.UserEvent(context)
b_gpu.add_event(wait_event)
b, evt = b_gpu.get_async() # testing that this doesn't hang
wait_event.set_status(cl.command_execution_status.COMPLETE)
evt.wait()
assert np.abs(b1 - b).mean() < 1e-5
except:
print('Build log:')
print(prog.get_build_info(dev, cl.program_build_info.LOG))
raise
# Data
v = np.arange(4, dtype=np.float32)
print('Input: ' + str(v))
# Create output buffer
v_buff = cl.Buffer(context,
flags=cl.mem_flags.READ_WRITE | cl.mem_flags.COPY_HOST_PTR,
hostbuf=v)
# Create user event
user_event = cl.UserEvent(context)
def read_complete(status, data):
print('Output: ' + str(data))
# Enqueue kernel that waits for user event before executing
global_size = (1, )
local_size = None
# __call__(queue, global_size, local_size, *args, global_offset=None, wait_for=None, g_times_l=False)
kernel_event = prog.user_event(queue,
global_size,
local_size,
v_buff,