def check(self, device_id):
size = 24
shape = (2, 3)
dtype = cupy.float32
with device.Device(device_id):
src_mem_ptr = self.allocator(size)
src_ptr = src_mem_ptr.ptr
args = (src_ptr, size, src_mem_ptr)
kwargs = {}
if self.specify_device_id:
kwargs = {'device_id': device_id}
unowned_mem = memory.UnownedMemory(*args, **kwargs)
assert unowned_mem.size == size
assert unowned_mem.ptr == src_ptr
assert unowned_mem.device_id == device_id
arr = cupy.ndarray(shape, dtype, memory.MemoryPointer(unowned_mem, 0))
# Delete the source object
del src_mem_ptr
with device.Device(device_id):
arr[:] = 2
assert (arr == 2).all()
def check(self, device_id):
if (cupy.cuda.runtime.is_hip
and self.allocator is memory.malloc_managed):
raise unittest.SkipTest('HIP does not support managed memory')
size = 24
shape = (2, 3)
dtype = cupy.float32
with device.Device(device_id):
src_mem_ptr = self.allocator(size)
src_ptr = src_mem_ptr.ptr
args = (src_ptr, size, src_mem_ptr)
kwargs = {}
if self.specify_device_id:
kwargs = {'device_id': device_id}
unowned_mem = memory.UnownedMemory(*args, **kwargs)
assert unowned_mem.size == size
assert unowned_mem.ptr == src_ptr
assert unowned_mem.device_id == device_id
arr = cupy.ndarray(shape, dtype, memory.MemoryPointer(unowned_mem, 0))
# Delete the source object
del src_mem_ptr
with device.Device(device_id):
arr[:] = 2
assert (arr == 2).all()
def check(self, device_id):
if cupy.cuda.runtime.is_hip:
if self.allocator is memory.malloc_managed:
raise unittest.SkipTest('HIP does not support managed memory')
if self.allocator is memory.malloc_async:
raise unittest.SkipTest('HIP does not support async mempool')
elif cupy.cuda.driver.get_build_version() < 11020:
raise unittest.SkipTest('malloc_async is supported since '
'CUDA 11.2')
size = 24
shape = (2, 3)
dtype = cupy.float32
with device.Device(device_id):
src_mem_ptr = self.allocator(size)
src_ptr = src_mem_ptr.ptr
args = (src_ptr, size, src_mem_ptr)
kwargs = {}
if self.specify_device_id:
kwargs = {'device_id': device_id}
unowned_mem = memory.UnownedMemory(*args, **kwargs)
assert unowned_mem.size == size
assert unowned_mem.ptr == src_ptr
assert unowned_mem.device_id == device_id
arr = cupy.ndarray(shape, dtype, memory.MemoryPointer(unowned_mem, 0))
# Delete the source object
del src_mem_ptr
with device.Device(device_id):
arr[:] = 2
assert (arr == 2).all()
def check(self, device_id):
if cupy.cuda.runtime.is_hip:
if self.allocator is memory.malloc_managed:
if cupy.cuda.driver.get_build_version() < 40300000:
raise unittest.SkipTest(
'Managed memory requires ROCm 4.3+')
else:
raise unittest.SkipTest(
'hipPointerGetAttributes does not support managed '
'memory')
if self.allocator is memory.malloc_async:
raise unittest.SkipTest('HIP does not support async mempool')
else:
if self.allocator is memory.malloc_async:
if cupy.cuda.driver._is_cuda_python():
version = cupy.cuda.runtime.runtimeGetVersion()
else:
version = cupy.cuda.driver.get_build_version()
if version < 11020:
raise unittest.SkipTest('malloc_async is supported since '
'CUDA 11.2')
elif runtime.deviceGetAttribute(
runtime.cudaDevAttrMemoryPoolsSupported, 0) == 0:
raise unittest.SkipTest(
'malloc_async is not supported on device 0')
size = 24
shape = (2, 3)
dtype = cupy.float32
with device.Device(device_id):
src_mem_ptr = self.allocator(size)
src_ptr = src_mem_ptr.ptr
args = (src_ptr, size, src_mem_ptr)
kwargs = {}
if self.specify_device_id:
kwargs = {'device_id': device_id}
if cupy.cuda.runtime.is_hip and self.allocator is memory._malloc:
# In ROCm, it seems that `hipPointerGetAttributes()`, which is
# called in `UnownedMemory()`, requires an unmanaged device pointer
# that the current device must be the one on which the memory
# referred to by the pointer physically resides.
with device.Device(device_id):
unowned_mem = memory.UnownedMemory(*args, **kwargs)
else:
unowned_mem = memory.UnownedMemory(*args, **kwargs)
assert unowned_mem.size == size
assert unowned_mem.ptr == src_ptr
assert unowned_mem.device_id == device_id
arr = cupy.ndarray(shape, dtype, memory.MemoryPointer(unowned_mem, 0))
# Delete the source object
del src_mem_ptr
with device.Device(device_id):
arr[:] = 2
assert (arr == 2).all()
def _convert_object_with_cuda_array_interface(a):
desc = a.__cuda_array_interface__
shape = desc['shape']
dtype = numpy.dtype(desc['typestr'])
if 'strides' in desc:
strides = desc['strides']
nbytes = numpy.max(numpy.array(shape) * numpy.array(strides))
else:
strides = None
nbytes = numpy.prod(shape) * dtype.itemsize
mem = memory.UnownedMemory(desc['data'][0], nbytes, a)
memptr = memory.MemoryPointer(mem, 0)
return ndarray(shape, dtype=dtype, memptr=memptr, strides=strides)
def mock_alloc(size):
mem = MockMemory(size)
return memory.MemoryPointer(mem, 0)