def setUpClass(self):
self.queue = get_queue()
self.shape = (4, 5, 6)
self.size = 4 * 5 * 6
self.values = {
'shape_x': self.shape[2],
'shape_y': self.shape[1],
'shape_z': self.shape[0],
'llength': 2,
}
self.k = CLKernels(self.queue.context, self.values)
self.grid = np.zeros(self.shape, dtype=np.float64)
self.grid[0, 0, 0] = 1
self.grid[0, 0, 1] = 1
self.grid[0, 1, 1] = 1
self.grid[0, 0, 2] = 1
self.grid[0, 0, -1] = 1
self.grid[-1, 0, 0] = 1
self.cl_image = cl.image_from_array(self.queue.context,
self.grid.astype(np.float32))
self.sampler_linear = cl.Sampler(self.queue.context, True,
cl.addressing_mode.REPEAT,
cl.filter_mode.LINEAR)
self.sampler_nearest = cl.Sampler(self.queue.context, False,
cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
self.out = np.zeros(self.shape, dtype=np.float64)
self.cl_out = cl_array.zeros(self.queue, self.shape, dtype=np.float32)
def __init__(self, ctx, values):
self.sampler_nearest = cl.Sampler(ctx, True,
cl.addressing_mode.REPEAT,
cl.filter_mode.NEAREST)
self.sampler_linear = cl.Sampler(ctx, True,
cl.addressing_mode.REPEAT,
cl.filter_mode.LINEAR)
self.multiply = ElementwiseKernel(ctx,
"float *x, float *y, float *z",
"z[i] = x[i] * y[i];")
self.conj_multiply = ElementwiseKernel(
ctx, "cfloat_t *x, cfloat_t *y, cfloat_t *z",
"z[i] = cfloat_mul(cfloat_conj(x[i]), y[i]);")
self.calc_lcc_and_take_best = ElementwiseKernel(
ctx, """float *gcc, float *ave, float *ave2, int *mask,
float norm_factor, int nrot, float *lcc, int *grot""",
"""float _lcc;
if (mask[i] > 0) {
_lcc = gcc[i] / sqrt(ave2[i] * norm_factor - ave[i] * ave[i]);
if (_lcc > lcc[i]) {
lcc[i] = _lcc;
grot[i] = nrot;
};
};
""")
kernel_file = os.path.join(os.path.dirname(__file__), 'kernels.cl')
with open(kernel_file) as f:
t = Template(f.read()).substitute(**values)
self._program = cl.Program(ctx, t).build()
self._gws_rotate_grid3d = (96, 64, 1)
def setUp(self):
p = cl.get_platforms()[0]
devs = p.get_devices()
self.ctx = cl.Context(devices=devs)
self.queue = cl.CommandQueue(self.ctx, device=devs[0])
self.k = CLKernels(self.ctx)
self.k = CLKernels(self.ctx)
self.s_linear = cl.Sampler(self.ctx, False, cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
self.s_nearest = cl.Sampler(self.ctx, False, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
def main():
# setup OpenCL
platforms = cl.get_platforms(
) # a platform corresponds to a driver (e.g. AMD, NVidia, Intel)
platform = platforms[0] # take first platform
devices = platform.get_devices(
cl.device_type.GPU) # get GPU devices of selected platform
device = devices[0] # take first GPU
context = cl.Context([device]) # put selected GPU into context object
queue = cl.CommandQueue(
context, device) # create command queue for selected GPU and context
# prepare data
imgIn = cv2.imread('photographer.png', cv2.IMREAD_GRAYSCALE)
rotation_angle = np.pi / 4
cos_theta = np.cos(rotation_angle)
sin_theta = np.sin(rotation_angle)
# setup sampler
sampler = cl.Sampler(context, True, cl.addressing_mode.REPEAT,
cl.filter_mode.NEAREST)
# get shape of input image, allocate memory for output to which result can be copied to
shape = imgIn.T.shape
imgOut = np.empty_like(imgIn)
# create image buffers which hold images for OpenCL
imgInBuf = cl.image_from_array(context,
ary=imgIn,
mode="r",
norm_int=True,
num_channels=1)
imgOutBuf = cl.image_from_array(context,
ary=imgOut,
mode="w",
norm_int=True,
num_channels=1)
# load, compile and execute OpenCL program
program = cl.Program(context, open('kernel.cl').read()).build()
program.img_rotate(queue, shape, None, sampler, imgInBuf, imgOutBuf,
np.double(sin_theta), np.double(cos_theta))
cl.enqueue_copy(
queue,
imgOut,
imgOutBuf,
origin=(0, 0),
region=shape,
is_blocking=True
) # wait until finished copying resulting image back from GPU to CPU
# write output image
cv2.imwrite('photographer_rotated.png', imgOut)
# show images
fig, ax = plt.subplots(1, 2)
ax[0].imshow(imgIn, cmap='gray')
ax[1].imshow(imgOut, cmap='gray')
plt.show()
def init_with_device(self):
global context, program
self.context = context
self.program = program
self.queue = pyopencl.CommandQueue(self.context)
fm = pyopencl.filter_mode.NEAREST
self.sampler = pyopencl.Sampler(self.context, False,
pyopencl.addressing_mode.CLAMP_TO_EDGE,
fm)
k_def = KERNELS_DEFS.get((self.src_format, self.dst_format))
assert k_def, "no kernel found for %s to %s" % (self.src_format,
self.dst_format)
self.kernel_function_name, _, self.channel_order, src = k_def
if self.src_format.endswith("P"):
#yuv 2 rgb:
self.do_convert_image = self.convert_image_yuv
else:
#rgb 2 yuv:
self.do_convert_image = self.convert_image_rgb
log("init_context(..) kernel source=%s", src)
self.kernel_function = getattr(self.program, self.kernel_function_name)
log("init_context(..) channel order=%s, filter mode=%s",
CHANNEL_ORDER_TO_STR.get(self.channel_order, self.channel_order),
FILTER_MODE_TO_STR.get(fm, fm))
log("init_context(..) kernel_function %s: %s",
self.kernel_function_name, self.kernel_function)
assert self.kernel_function
def test_rotate_image3d_1(self):
shape = (8, 6, 5)
np_image = np.zeros(shape, dtype=np.float32)
np_image[0, 0, 0] = 1
np_image[0, 0, 1] = 1
np_image[0, 0, 2] = 1
# 90 degree rotation around z-axis
rotmat = [[0, 1, 0], [1, 0, 0], [0, 0, 1]]
np_out = np.zeros_like(np_image)
expected = np.zeros_like(np_image)
expected[0, 0, 0] = 1
expected[0, 1, 0] = 1
expected[0, 2, 0] = 1
cl_image = cl.image_from_array(self.queue.context, np_image)
cl_out = cl_array.to_device(self.queue, np_out)
cl_sampler = cl.Sampler(self.queue.context, False,
cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
self.kernels.rotate_image3d(self.queue, cl_sampler, cl_image, rotmat,
cl_out)
self.assertTrue(np.allclose(expected, cl_out.get()))
def rescale(image, shape, sampler=None, queue=None, out=None, block=False):
"""Rescale *image* to *shape* and use *sampler* which is a :class:`pyopencl.Sampler` instance.
Use OpenCL *queue* and *out* pyopencl Array. If *block* is True, wait for the copy to finish.
"""
if cfg.PRECISION.cl_float == 8:
raise TypeError("Double precision mode not supported")
shape = make_tuple(shape)
# OpenCL order
factor = float(shape[1]) / image.shape[1], float(shape[0]) / image.shape[0]
LOG.debug("rescale, shape: %s, final_shape: %s, factor: %s", image.shape, shape, factor)
if queue is None:
queue = cfg.OPENCL.queue
if out is None:
out = cl.array.Array(queue, shape, dtype=cfg.PRECISION.np_float)
if not sampler:
sampler = cl.Sampler(
cfg.OPENCL.ctx, False, cl.addressing_mode.CLAMP_TO_EDGE, cl.filter_mode.LINEAR
)
image = g_util.get_image(image)
ev = cfg.OPENCL.programs["improc"].rescale(
queue, shape[::-1], None, image, out.data, sampler, g_util.make_vfloat2(*factor)
)
if block:
ev.wait()
return out
def _varconvolve_2d_parametrized(
image, parameters, kernel_name, sampler=None, queue=None, out=None, block=False
):
"""Variable convolution of *image* with *parameters*, use OpoenCL kernel *kernel_name*,
*sampler*, *queue*, *out* and wait if *block* is True. Return *out*.
"""
if queue is None:
queue = cfg.OPENCL.queue
if out is None:
out = cl.array.Array(queue, image.shape, dtype=cfg.PRECISION.np_float)
if sampler is None:
sampler = cl.Sampler(
queue.context, False, cl.addressing_mode.CLAMP_TO_EDGE, cl.filter_mode.NEAREST
)
if not isinstance(parameters, cl_array.Array):
params_host = np.empty(parameters[0].shape, dtype=cfg.PRECISION.vfloat2)
params_host["y"] = g_util.get_host(parameters[0])
params_host["x"] = g_util.get_host(parameters[1])
parameters = cl_array.to_device(queue, params_host)
if parameters.shape != image.shape:
raise ValueError(
"Parameters shape '{}' differs from image shape '{}'".format(
parameters.shape, image.shape
)
)
image = g_util.get_image(image, queue=queue)
args = (image, out.data, sampler, cl_array.vec.make_int2(0, 0), parameters.data)
varconvolve(kernel_name, image.shape[::-1], args, queue=queue, block=block)
return out
def compute(self):
self.width, self.height = self.input(0).size
self.devOutBuffer = cl.Image(self.engine.ctx,
self.engine.mf.READ_WRITE,
self.image_format,
shape=(self.width, self.height))
sampler = cl.Sampler(
self.engine.ctx,
True, # Normalized coordinates
cl.addressing_mode.CLAMP_TO_EDGE,
cl.filter_mode.LINEAR)
exec_evt = self.program.run_add(
self.engine.queue,
self.size,
None,
self.input(0).getOutDevBuffer(),
self.input(1).getOutDevBuffer(),
self.devOutBuffer,
sampler,
numpy.int32(self.width),
numpy.int32(self.height),
)
exec_evt.wait()
def setupClQueue(self, ctx):
self.ctx = ctx
self.queue = cl.CommandQueue(self.ctx,
properties=cl.command_queue_properties.
OUT_OF_ORDER_EXEC_MODE_ENABLE)
self.mf = cl.mem_flags
self.sampler = cl.Sampler(self.ctx, True, cl.addressing_mode.REPEAT,
cl.filter_mode.LINEAR)
pass
def main():
imageObjects = [0, 0]
# Main
if len(sys.argv) != 3:
print "USAGE: " + sys.argv[0] + " <inputImageFile> <outputImageFile>"
return 1
# Create an OpenCL context on first available platform
context, device = CreateContext()
if context == None:
print "Failed to create OpenCL context."
return 1
# Create a command-queue on the first device available
commandQueue = cl.CommandQueue(context, device)
# Make sure the device supports images, otherwise exit
if not device.get_info(cl.device_info.IMAGE_SUPPORT):
print "OpenCL device does not support images."
return 1
# Load input image from file and load it into
# an OpenCL image object
imageObjects[0], imgSize = LoadImage(context, sys.argv[1])
# Create ouput image object
clImageFormat = cl.ImageFormat(cl.channel_order.RGBA,
cl.channel_type.UNORM_INT8)
imageObjects[1] = cl.Image(context, cl.mem_flags.WRITE_ONLY, clImageFormat,
imgSize)
# Create sampler for sampling image object
sampler = cl.Sampler(
context,
False, # Non-normalized coordinates
cl.addressing_mode.CLAMP_TO_EDGE,
cl.filter_mode.NEAREST)
# Create OpenCL program
program = CreateProgram(context, device, "ImageFilter2D.cl")
# Call the kernel directly
localWorkSize = (16, 16)
globalWorkSize = (RoundUp(localWorkSize[0],
imgSize[0]), RoundUp(localWorkSize[1],
imgSize[1]))
program.gaussian_filter(commandQueue, globalWorkSize, localWorkSize,
imageObjects[0], imageObjects[1], sampler,
numpy.int32(imgSize[0]), numpy.int32(imgSize[1]))
# Read the output buffer back to the Host
buffer = numpy.zeros(imgSize[0] * imgSize[1] * 4, numpy.uint8)
origin = (0, 0, 0)
region = (imgSize[0], imgSize[1], 1)
cl.enqueue_read_image(commandQueue, imageObjects[1], origin, region,
buffer).wait()
print "Executed program successfully."
# Save the image to disk
SaveImage(sys.argv[2], buffer, imgSize)
def set_envmap(self, envmap):
fmt = cl.ImageFormat(cl.channel_order.RGBA, cl.channel_type.FLOAT)
em = np.zeros(envmap.shape[:2] + (4, ), dtype=np.float32)
em[:, :, :3] = envmap
em[:, :, 3] = 1
self.envmap = cl.Image(context,
mf.READ_ONLY | mf.COPY_HOST_PTR,
fmt,
shape=em.shape[:2],
hostbuf=em)
self.sampler = cl.Sampler(context, True, cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
def test_image_2d(self, device, ctx_getter):
context = ctx_getter()
if not device.image_support:
from py.test import skip
skip("images not supported on %s" % device)
prg = cl.Program(
context, """
__kernel void copy_image(
__global float4 *dest,
__read_only image2d_t src,
sampler_t samp,
int width)
{
int x = get_global_id(0);
int y = get_global_id(1);
/*
const sampler_t samp =
CLK_NORMALIZED_COORDS_FALSE
| CLK_ADDRESS_CLAMP
| CLK_FILTER_NEAREST;
*/
dest[x + width*y] = read_imagef(src, samp, (float2)(x, y));
// dest[x + width*y] = get_image_height(src);
}
""").build()
a = numpy.random.rand(1024, 1024, 4).astype(numpy.float32)
queue = cl.CommandQueue(context)
mf = cl.mem_flags
a_img = cl.Image(context,
mf.READ_ONLY | mf.COPY_HOST_PTR,
cl.ImageFormat(cl.channel_order.RGBA,
cl.channel_type.FLOAT),
shape=a.shape[:2],
hostbuf=a)
a_dest = cl.Buffer(context, mf.READ_WRITE, a.nbytes)
samp = cl.Sampler(context, False, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
prg.copy_image(queue, a.shape, None, a_dest, a_img, samp,
numpy.int32(a.shape[0]))
a_result = numpy.empty_like(a)
cl.enqueue_read_buffer(queue, a_dest, a_result, is_blocking=True)
print a_result.dtype
assert la.norm(a_result - a) == 0
def _transfer_real(
self,
shape,
center,
pixel_size,
energy,
exponent,
compute_phase,
is_parabola,
out,
queue,
block,
flux=1,
):
flux = (self.get_flux(energy, None, pixel_size).rescale(
1 / q.s).magnitude.astype(cfg.PRECISION.np_float))
cl_image = gutil.get_image(flux, queue=queue)
sampler = cl.Sampler(cfg.OPENCL.ctx, False, cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
cl_center = gutil.make_vfloat3(*center)
cl_ps = gutil.make_vfloat2(*pixel_size.simplified.magnitude[::-1])
cl_input_ps = gutil.make_vfloat2(
*self._pixel_size.simplified.magnitude[::-1])
z_sample = self.sample_distance.simplified.magnitude
lam = energy_to_wavelength(energy).simplified.magnitude
kernel = cfg.OPENCL.programs["physics"].make_flat_from_2D_profile
ev = kernel(
queue,
shape[::-1],
None,
out.data,
cl_image,
sampler,
cl_center,
cl_ps,
cl_input_ps,
cfg.PRECISION.np_float(z_sample),
cfg.PRECISION.np_float(lam),
np.int32(exponent),
np.int32(compute_phase),
np.int32(is_parabola),
)
if block:
ev.wait()
def test_int_ptr(ctx_factory):
def do_test(obj):
new_obj = type(obj).from_int_ptr(obj.int_ptr)
assert obj == new_obj
assert type(obj) is type(new_obj)
ctx = ctx_factory()
device, = ctx.devices
platform = device.platform
do_test(device)
do_test(platform)
do_test(ctx)
queue = cl.CommandQueue(ctx)
do_test(queue)
evt = cl.enqueue_marker(queue)
do_test(evt)
prg = cl.Program(
ctx, """
__kernel void sum(__global float *a)
{ a[get_global_id(0)] *= 2; }
""").build()
do_test(prg)
do_test(prg.sum)
n = 2000
a_buf = cl.Buffer(ctx, 0, n * 4)
do_test(a_buf)
# crashes on intel...
# and pocl does not support CL_ADDRESS_CLAMP
if device.image_support and platform.vendor not in [
"Intel(R) Corporation",
"The pocl project",
]:
smp = cl.Sampler(ctx, False, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
do_test(smp)
img_format = cl.get_supported_image_formats(
ctx, cl.mem_flags.READ_ONLY, cl.mem_object_type.IMAGE2D)[0]
img = cl.Image(ctx, cl.mem_flags.READ_ONLY, img_format, (128, 256))
do_test(img)
def parallel_prediction_errors(self, image):
""" Get the MILC prediction errors for a 3D image by means of OpenCL accelerated computation
Keyword arguments:
image -- a 3D numpy array (bitmap image)
Return:
a 3D numpy array of the same shape of "image", containing the prediction errors
"""
mf = cl.mem_flags
# Define the image format for the prediction errors
err_format = cl.ImageFormat(channel_order=cl.channel_order.R,
channel_type=DataType.CL_ERR.value)
# Define the input image from the numpy 3D array
source_image = cl.image_from_array(self.ctx, image)
original_shape = numpy.shape(image)
cl_shape = list(
reversed(original_shape)) # inverted shape (pyOpenCL bug?)
# output image
output_image = cl.Image(self.ctx,
mf.WRITE_ONLY,
err_format,
shape=cl_shape)
# sampler. pixels out of range have a value of '0'
sampler = cl.Sampler(self.ctx, False, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
# enqueue kernel
self.program.image_test(self.queue, original_shape, None, source_image,
output_image, sampler)
# read the resulting image into a numpy array
output_data = numpy.empty(shape=cl_shape, dtype=DataType.ERR.value)
cl.enqueue_read_image(self.queue, output_image, (0, 0, 0), cl_shape,
output_data)
return output_data.reshape(original_shape)
def setUp(self):
self.pdb1 = disvis.PDB.fromfile(
os.path.join(os.path.dirname(__file__), 'data', 'O14250.pdb'))
self.pdb2 = disvis.PDB.fromfile(
os.path.join(os.path.dirname(__file__), 'data', 'Q9UT97.pdb'))
q, w, a = disvis.rotations.proportional_orientations(10)
self.rotations = disvis.rotations.quat_to_rotmat(q)
self.vlength = int(np.linalg.norm(self.pdb2.coor - self.pdb2.center, axis=1).max() +\
3 + 1.5)/1.0
self.shape = disvis.disvis.grid_shape(self.pdb1.coor, self.pdb2.coor,
1)
radii = np.zeros(self.pdb1.coor.shape[0], dtype=np.float64)
radii.fill(1.5 + 3)
self.rsurf = disvis.disvis.rsurface(self.pdb1.coor, radii, self.shape,
1)
self.rcore = disvis.volume.erode(self.rsurf, 3)
self.origin = self.rsurf.origin
self.voxelspacing = 1
radii = np.zeros(self.pdb2.coor.shape[0], dtype=np.float64)
radii.fill(1.5)
self.im_lsurf = disvis.points.dilate_points(self.pdb2.coor - self.pdb2.center \
+ self.pdb1.center, radii, disvis.volume.zeros_like(self.rcore))
self.im_center = np.asarray(
(self.pdb1.center - self.rcore.origin) / 1.0, dtype=np.float64)
self.queue = disvis.helpers.get_queue()
self.sampler = cl.Sampler(self.queue.context, False,
cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
self.kernels = disvis.kernels.Kernels(self.queue.context)
self.ft_shape = list(self.shape)
self.ft_shape[0] = self.ft_shape[0] // 2 + 1
self.ft_shape = tuple(self.ft_shape)
self.kernels.rfftn = disvis.pyclfft.RFFTn(self.queue.context,
self.shape)
self.kernels.irfftn = disvis.pyclfft.iRFFTn(self.queue.context,
self.shape)
if not info_name.startswith("_") and info_name != "to_string":
info = getattr(info_cls, info_name)
try:
info_value = obj.get_info(info)
except:
info_value = "<error>"
print "%s: %s" % (info_name, info_value)
platform = cl.get_platforms()[0]
device = platform.get_devices()[0]
context = cl.Context(devices=[device])
queue = cl.CommandQueue(context)
mf = cl.mem_flags
sampler = cl.Sampler(context, True, cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
def normal_maker(name, mat, matw, matr):
def tup(i):
return '(float4)' + repr(tuple(mat[i].tolist()))
def tupw(i):
return '(float4)' + repr(tuple(matw[i].tolist()))
def tupr(i):
return '(float4)' + repr(tuple(matr[i].tolist()))
return """
inline float4 matmul3_%s(const float4 r1) {
return (float4)(dot(%s,r1),dot(%s,r1),dot(%s,r1),0);
def dilate():
#headURI = 'http://www.slicer.org/slicerWiki/images/4/43/MR-head.nrrd'
#labelURI = 'http://boggs.bwh.harvard.edu/tmp/MRHead-label.nrrd'
base = '/tmp/hoot/'
headURI = base + 'MR-head.nrrd'
labelURI = base + 'MR-head-label.nrrd'
print("Starting...")
if not slicer.util.getNode('MR-head*'):
print("Downloading...")
vl = slicer.modules.volumes.logic()
name = 'MR-head'
volumeNode = vl.AddArchetypeVolume(headURI, name, 0)
name = 'MR-head-label'
labelNode = vl.AddArchetypeVolume(labelURI, name, 1)
if volumeNode:
storageNode = volumeNode.GetStorageNode()
if storageNode:
# Automatically select the volume to display
appLogic = slicer.app.applicationLogic()
selNode = appLogic.GetSelectionNode()
selNode.SetReferenceActiveVolumeID(volumeNode.GetID())
selNode.SetReferenceActiveLabelVolumeID(labelNode.GetID())
appLogic.PropagateVolumeSelection(1)
node = slicer.util.getNode('MR-head')
volume = slicer.util.array('MR-head')
oneOverVolumeMax = 1. / volume.max()
labelNode = slicer.util.getNode('MR-head-label')
labelVolume = slicer.util.array('MR-head-label')
print("Creating Context...")
ctx = None
for platform in cl.get_platforms():
for device in platform.get_devices():
print(cl.device_type.to_string(device.type))
if cl.device_type.to_string(device.type) == "GPU":
ctx = cl.Context([device])
break;
if not ctx:
print ("no GPU context available")
ctx = cl.create_some_context()
print("Creating Queue...")
queue = cl.CommandQueue(ctx)
print("Copying volumes...")
mf = cl.mem_flags
volume_dev = cl_array.to_device(queue, volume)
volume_image_dev = cl.image_from_array(ctx, volume,1)
label_dev = cl.array.to_device(queue, labelVolume)
theta = numpy.zeros_like(volume)
theta_dev = cl.array.to_device(queue,theta)
thetaNext = numpy.zeros_like(volume)
thetaNext_dev = cl.array.to_device(queue,thetaNext)
dest_dev = cl_array.empty_like(volume_dev)
sampler = cl.Sampler(ctx,False,cl.addressing_mode.REPEAT,cl.filter_mode.LINEAR)
print("Building program...")
slices,rows,columns = volume.shape
prg = cl.Program(ctx, """
#pragma OPENCL EXTENSION cl_khr_fp64: enable
__kernel void copy(
__global short source[{slices}][{rows}][{columns}],
__global short destination[{slices}][{rows}][{columns}])
{{
size_t slice = get_global_id(0);
size_t column = get_global_id(1);
size_t row = get_global_id(2);
if (slice < {slices} && row < {rows} && column < {columns})
{{
destination[slice][row][column] = source [slice][row][column];
}}
}}
__kernel void dilate(
__read_only image3d_t volume,
__global short label[{slices}][{rows}][{columns}],
sampler_t volumeSampler,
__global short dest[{slices}][{rows}][{columns}])
{{
size_t slice = get_global_id(0);
size_t column = get_global_id(1);
size_t row = get_global_id(2);
if (slice >= {slices} || row >= {rows} || column >= {columns})
{{
return;
}}
int size = 1;
int sliceOff, rowOff, columnOff;
unsigned int sampleSlice, sampleRow, sampleColumn;
short samples = 0;
float4 samplePosition;
for (sliceOff = -size; sliceOff <= size; sliceOff++)
{{
sampleSlice = slice + sliceOff;
if (sampleSlice < 0 || sampleSlice >= {slices}) continue;
for (rowOff = -size; rowOff <= size; rowOff++)
{{
sampleRow = row + rowOff;
if (sampleRow < 0 || sampleRow >= {rows}) continue;
for (columnOff = -size; columnOff <= size; columnOff++)
{{
sampleColumn = column + columnOff;
if (sampleColumn < 0 || sampleColumn >= {columns}) continue;
if (label[sampleSlice][sampleRow][sampleColumn] != 0)
{{
samples++;
}}
}}
}}
}}
dest[slice][row][column] = samples;
}}
""".format(slices=slices,rows=rows,columns=columns)).build()
def iterate(iterations=10):
print("Running!")
for iteration in xrange(iterations):
prg.dilate(queue, volume.shape, None, volume_image_dev, label_dev.data, sampler, dest_dev.data)
prg.copy(queue, volume.shape, None, dest_dev.data, label_dev.data)
print("Getting data...")
labelVolume[:] = dest_dev.get()
print("Rendering...")
labelNode.GetImageData().Modified()
node.GetImageData().Modified()
print("Done!")
def grow(iterations=10):
for iteration in xrange(iterations):
iterate(1)
slicer.app.processEvents()
def imageBlur():
print("Starting...")
if not slicer.util.getNode('MRHead*'):
print("Downloading...")
vl = slicer.modules.volumes.logic()
uri = 'http://www.slicer.org/slicerWiki/images/4/43/MR-head.nrrd'
name = 'MRHead'
volumeNode = vl.AddArchetypeVolume(uri, name, 0)
if volumeNode:
storageNode = volumeNode.GetStorageNode()
if storageNode:
# Automatically select the volume to display
appLogic = slicer.app.applicationLogic()
selNode = appLogic.GetSelectionNode()
selNode.SetReferenceActiveVolumeID(volumeNode.GetID())
appLogic.PropagateVolumeSelection(1)
node = slicer.util.getNode('MRHead*')
volume = slicer.util.array('MRHead*')
print("Creating Context...")
ctx = None
for platform in cl.get_platforms():
for device in platform.get_devices():
print(cl.device_type.to_string(device.type))
if cl.device_type.to_string(device.type) == "GPU":
ctx = cl.Context([device])
break;
if not ctx:
print ("no GPU context available")
ctx = cl.create_some_context()
print("Creating Queue...")
queue = cl.CommandQueue(ctx)
print("Copying volume...")
mf = cl.mem_flags
volume_dev = cl_array.to_device(queue, volume)
volume_image_dev = cl.image_from_array(ctx, volume,1)
dest_dev = cl_array.empty_like(volume_dev)
sampler = cl.Sampler(ctx,False,cl.addressing_mode.REPEAT,cl.filter_mode.LINEAR)
print("Building program...")
slices,rows,columns = volume.shape
prg = cl.Program(ctx, """
#pragma OPENCL EXTENSION cl_khr_fp64: enable
__kernel void blur(
__read_only image3d_t volume,
sampler_t volumeSampler,
__global short dest[{slices}][{rows}][{columns}])
{{
size_t slice = get_global_id(0);
size_t column = get_global_id(1);
size_t row = get_global_id(2);
int size = 10;
int sliceOff, rowOff, columnOff;
unsigned int sampleSlice, sampleRow, sampleColumn;
float sum = 0;
unsigned int samples = 0;
float4 samplePosition;
int4 sample;
for (sliceOff = -size; sliceOff <= size; sliceOff++)
{{
sampleSlice = slice + sliceOff;
if (sampleSlice < 0 || sampleSlice >= {slices}) continue;
for (rowOff = -size; rowOff <= size; rowOff++)
{{
sampleRow = row + rowOff;
if (sampleRow < 0 || sampleRow >= {rows}) continue;
for (columnOff = -size; columnOff <= size; columnOff++)
{{
sampleColumn = column + columnOff;
if (sampleColumn < 0 || sampleColumn >= {columns}) continue;
samplePosition.x = sampleColumn;
samplePosition.y = sampleRow;
samplePosition.z = sampleSlice;
sample = read_imagei(volume, volumeSampler, samplePosition);
//sum += sampleSlice+sampleRow+sampleColumn;
sum += sample.x;
samples++;
}}
}}
}}
dest[slice][row][column] = (short) (sum / samples);
}}
""".format(slices=slices,rows=rows,columns=columns)).build()
print("Running!")
prg.blur(queue, volume.shape, None, volume_image_dev, label_image_dev, sampler, dest_dev.data)
print("Getting data...")
volume[:] = dest_dev.get()
print("Rendering...")
node.GetImageData().Modified()
print("Done!")
import pyopencl, pyopencl.array
import numpy
ctx = pyopencl.create_some_context()
queue = pyopencl.CommandQueue(
ctx, properties=pyopencl.command_queue_properties.PROFILING_ENABLE)
x, y, z = numpy.ogrid[-10:10:0.05, -10:10:0.05, -10:10:0.05]
r = numpy.sqrt(x * x + y * y + z * z)
data = ((x * x - y * y + z * z) * numpy.exp(-r)).astype("float32")
gpu_vol = pyopencl.image_from_array(ctx, data, 1)
shape = (500, 500)
img = numpy.empty(shape, dtype=numpy.float32)
gpu_img = pyopencl.array.empty(queue, shape, numpy.float32)
prg = open("interpolation.cl").read()
sampler = pyopencl.Sampler(
ctx,
True, # normalized coordinates
pyopencl.addressing_mode.CLAMP_TO_EDGE,
pyopencl.filter_mode.LINEAR)
prg = pyopencl.Program(ctx, prg).build()
n = pyopencl.array.to_device(queue, numpy.array([1, 1, 1],
dtype=numpy.float32))
c = pyopencl.array.to_device(queue,
numpy.array([0.5, 0.5, 0.5], dtype=numpy.float32))
prg.interpolate(queue, (512, 512), (16, 16), gpu_vol, sampler, gpu_img.data,
numpy.int32(shape[1]), numpy.int32(shape[1]), c.data, n.data)
img = gpu_img.get()
#timing:
evt = []
evt.append(
def test_image_2d(ctx_factory):
context = ctx_factory()
device, = context.devices
if not device.image_support:
from pytest import skip
skip("images not supported on %s" % device)
if "Intel" in device.vendor and "31360.31426" in device.version:
from pytest import skip
skip("images crashy on %s" % device)
_xfail_if_pocl(device.platform, None, "pocl does not support CL_ADDRESS_CLAMP")
prg = cl.Program(context, """
__kernel void copy_image(
__global float *dest,
__read_only image2d_t src,
sampler_t samp,
int stride0)
{
int d0 = get_global_id(0);
int d1 = get_global_id(1);
/*
const sampler_t samp =
CLK_NORMALIZED_COORDS_FALSE
| CLK_ADDRESS_CLAMP
| CLK_FILTER_NEAREST;
*/
dest[d0*stride0 + d1] = read_imagef(src, samp, (float2)(d1, d0)).x;
}
""").build()
num_channels = 1
a = np.random.rand(1024, 512, num_channels).astype(np.float32)
if num_channels == 1:
a = a[:, :, 0]
queue = cl.CommandQueue(context)
try:
a_img = cl.image_from_array(context, a, num_channels)
except cl.RuntimeError:
import sys
exc = sys.exc_info()[1]
if exc.code == cl.status_code.IMAGE_FORMAT_NOT_SUPPORTED:
from pytest import skip
skip("required image format not supported on %s" % device.name)
else:
raise
a_dest = cl.Buffer(context, cl.mem_flags.READ_WRITE, a.nbytes)
samp = cl.Sampler(context, False,
cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
prg.copy_image(queue, a.shape, None, a_dest, a_img, samp,
np.int32(a.strides[0]/a.dtype.itemsize))
a_result = np.empty_like(a)
cl.enqueue_copy(queue, a_result, a_dest)
good = la.norm(a_result - a) == 0
if not good:
if queue.device.type & cl.device_type.CPU:
assert good, ("The image implementation on your CPU CL platform '%s' "
"returned bad values. This is bad, but common."
% queue.device.platform)
else:
assert good
def main():
os.environ['PYOPENCL_COMPILER_OUTPUT'] = '1'
imageObjects = [ 0, 0, 0 ]
# Main
if len(sys.argv) != 4:
print "USAGE: " + sys.argv[0] + " <source> <palette> <output>"
return 1
# Create an OpenCL context on first available platform
context, device = CreateContext();
if context == None:
print "Failed to create OpenCL context."
return 1
# Create a command-queue on the first device available
# on the created context
commandQueue = cl.CommandQueue(context, device)
# Make sure the device supports images, otherwise exit
if not device.get_info(cl.device_info.IMAGE_SUPPORT):
print "OpenCL device does not support images."
return 1
# Load input image from file and load it into
# an OpenCL image object
imageObjects[0], srcSize = LoadImage(context, sys.argv[1])
imageObjects[1], palSize = LoadImage(context, sys.argv[2])
pixels = srcSize[0] * srcSize[1]
if (palSize[0] * palSize[1] != pixels):
print "Images do not contain the same number of pixels."
return 1
#########################################
###
###
### TODO Rearrange the palette to the correct dimensions here
###
###
#########################################
# Create ouput image object
clImageFormat = cl.ImageFormat(cl.channel_order.RGBA,
cl.channel_type.UNORM_INT8)
bufferObject = cl.Buffer(context,
cl.mem_flags.READ_WRITE,
pixels * 4 * 4)
imageObjects[2] = cl.Image(context,
cl.mem_flags.WRITE_ONLY,
clImageFormat,
srcSize)
# Create sampler for sampling image object
sampler = cl.Sampler(context,
False, # Non-normalized coordinates
cl.addressing_mode.CLAMP_TO_EDGE,
cl.filter_mode.NEAREST)
# Create OpenCL program
program = CreateProgram(context, device, "quad_swap.cl")
# Call the kernel directly
localWorkSize = (16,)
globalWorkSize = ( RoundUp(localWorkSize[0], srcSize[0]*srcSize[1]/2), )
program.quad_swap(commandQueue,
globalWorkSize,
localWorkSize,
imageObjects[0],
imageObjects[1],
bufferObject,
imageObjects[2],
sampler,
numpy.int32(srcSize[0]),
numpy.int32(srcSize[1]))
# Read the output buffer back to the Host
buffer = numpy.zeros(srcSize[0] * srcSize[1] * 4, numpy.uint8)
origin = ( 0, 0, 0 )
region = ( srcSize[0], srcSize[1], 1 )
cl.enqueue_read_image(commandQueue, imageObjects[2], origin, region, buffer).wait()
# Save the image to disk
SaveImage(sys.argv[3], buffer, srcSize)
def test_get_info(self, platform, device):
failure_count = [0]
CRASH_QUIRKS = [
(("NVIDIA Corporation", "NVIDIA CUDA", "OpenCL 1.0 CUDA 3.0.1"), [
(cl.Event, cl.event_info.COMMAND_QUEUE),
]),
]
QUIRKS = []
plat_quirk_key = (platform.vendor, platform.name, platform.version)
def find_quirk(quirk_list, cl_obj, info):
for entry_plat_key, quirks in quirk_list:
if entry_plat_key == plat_quirk_key:
for quirk_cls, quirk_info in quirks:
if (isinstance(cl_obj, quirk_cls)
and quirk_info == info):
return True
return False
def do_test(cl_obj, info_cls, func=None, try_attr_form=True):
if func is None:
def func(info):
cl_obj.get_info(info)
for info_name in dir(info_cls):
if not info_name.startswith("_") and info_name != "to_string":
info = getattr(info_cls, info_name)
if find_quirk(CRASH_QUIRKS, cl_obj, info):
print "not executing get_info", type(cl_obj), info_name
print "(known crash quirk for %s)" % platform.name
continue
try:
func(info)
except:
msg = "failed get_info", type(cl_obj), info_name
if find_quirk(QUIRKS, cl_obj, info):
msg += ("(known quirk for %s)" % platform.name)
else:
failure_count[0] += 1
if try_attr_form:
try:
getattr(cl_obj, info_name.lower())
except:
print "failed attr-based get_info", type(
cl_obj), info_name
if find_quirk(QUIRKS, cl_obj, info):
print "(known quirk for %s)" % platform.name
else:
failure_count[0] += 1
do_test(platform, cl.platform_info)
do_test(device, cl.device_info)
ctx = cl.Context([device])
do_test(ctx, cl.context_info)
props = 0
if (device.queue_properties
& cl.command_queue_properties.PROFILING_ENABLE):
profiling = True
props = cl.command_queue_properties.PROFILING_ENABLE
queue = cl.CommandQueue(ctx, properties=props)
do_test(queue, cl.command_queue_info)
prg = cl.Program(
ctx, """
__kernel void sum(__global float *a)
{ a[get_global_id(0)] *= 2; }
""").build()
do_test(prg, cl.program_info)
do_test(prg,
cl.program_build_info,
lambda info: prg.get_build_info(device, info),
try_attr_form=False)
cl.unload_compiler() # just for the heck of it
mf = cl.mem_flags
n = 2000
a_buf = cl.Buffer(ctx, 0, n * 4)
do_test(a_buf, cl.mem_info)
kernel = prg.sum
do_test(kernel, cl.kernel_info)
evt = kernel(queue, (n, ), None, a_buf)
do_test(evt, cl.event_info)
if profiling:
evt.wait()
do_test(evt,
cl.profiling_info,
lambda info: evt.get_profiling_info(info),
try_attr_form=False)
if device.image_support:
smp = cl.Sampler(ctx, True, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
do_test(smp, cl.sampler_info)
img_format = cl.get_supported_image_formats(
ctx, cl.mem_flags.READ_ONLY, cl.mem_object_type.IMAGE2D)[0]
img = cl.Image(ctx, cl.mem_flags.READ_ONLY, img_format, (128, 256))
assert img.shape == (128, 256)
img.depth
img.image.depth
do_test(img, cl.image_info, lambda info: img.get_image_info(info))
if failure_count[0]:
raise RuntimeError(
"get_info testing had %d errors "
"(If you compiled against OpenCL 1.1 but are testing a 1.0 "
"implementation, you can safely ignore this.)" %
failure_count[0])
def test_findMembranePositionUsingMaxIncline(self):
inputPath = 'C:/Private/PhD_Publications/Publication_of_Algorithm/Code/TrackingAlgorithm/TrackingAlgorithm/TestData/ReferenceDataForTests/UnitTests/OpenClKernels/findMembranePositionUsingMaxIncline_000/input'
referencePath = 'C:/Private/PhD_Publications/Publication_of_Algorithm/Code/TrackingAlgorithm/TrackingAlgorithm/TestData/ReferenceDataForTests/UnitTests/OpenClKernels/findMembranePositionUsingMaxIncline_000/output'
referenceVariableName1 = 'dev_membraneCoordinates'
referenceVariableName2 = 'dev_membraneNormalVectors'
referenceVariableName3 = 'dev_fitInclines'
self.loadHostVariable('linFitSearchRangeXvalues', inputPath)
self.setupTest("maximumIntensityIncline")
self.nrOfLocalAngleSteps = 64
self.detectionKernelStrideSize = 2048
self.nrOfStrides = 1
self.nrOfDetectionAngleSteps = np.float64(
self.nrOfStrides * self.detectionKernelStrideSize)
self.sampler = cl.Sampler(self.ctx, True, cl.addressing_mode.REPEAT,
cl.filter_mode.LINEAR)
self.loadHostVariable('trackingGlobalSize', inputPath)
self.loadHostVariable('trackingWorkGroupSize', inputPath)
self.loadHostVariable('host_Img', inputPath)
self.dev_Img = cl.image_from_array(self.ctx,
ary=self.host_Img,
mode="r",
norm_int=False,
num_channels=1)
self.loadHostVariable('imgSizeX', inputPath)
self.loadHostVariable('imgSizeY', inputPath)
#self.saveDeviceVariable('buf_localRotationMatrices',inputPath)
self.loadHostVariable('localRotationMatrices', inputPath)
self.buf_localRotationMatrices = cl.Buffer(
self.ctx,
self.mf.READ_ONLY | self.mf.COPY_HOST_PTR,
hostbuf=self.localRotationMatrices)
#self.saveDeviceVariable('buf_linFitSearchRangeXvalues',inputPath)
self.buf_linFitSearchRangeXvalues = cl.Buffer(
self.ctx,
self.mf.READ_ONLY | self.mf.COPY_HOST_PTR,
hostbuf=self.linFitSearchRangeXvalues)
self.loadHostVariable('linFitParameter', inputPath)
self.loadHostVariable('fitIntercept_memSize', inputPath)
self.fitIncline_memSize = self.fitIntercept_memSize
self.loadHostVariable('rotatedUnitVector_memSize', inputPath)
self.loadHostVariable('meanParameter', inputPath)
#self.saveDeviceVariable('buf_meanRangeXvalues',inputPath)
self.loadHostVariable('meanRangeXvalues', inputPath)
self.buf_meanRangeXvalues = cl.Buffer(self.ctx,
self.mf.READ_ONLY
| self.mf.COPY_HOST_PTR,
hostbuf=self.meanRangeXvalues)
self.loadHostVariable('meanRangePositionOffset', inputPath)
self.loadHostVariable('localMembranePositions_memSize', inputPath)
self.loadDeviceVariable('dev_membraneCoordinates', inputPath)
self.loadDeviceVariable('dev_membraneNormalVectors', inputPath)
self.loadDeviceVariable('dev_fitInclines', inputPath)
self.loadHostVariable('inclineTolerance', inputPath)
self.inclineRefinementRange = np.int32(2)
self.setWorkGroupSizes()
for strideNr in range(self.nrOfStrides):
# set the starting index of the coordinate array for each kernel instance
kernelCoordinateStartingIndex = np.int32(
strideNr * self.detectionKernelStrideSize)
self.prg.findMembranePosition(self.queue, self.trackingGlobalSize, self.trackingWorkGroupSize, self.sampler, \
self.dev_Img, self.imgSizeX, self.imgSizeY, \
self.buf_localRotationMatrices, \
self.buf_linFitSearchRangeXvalues, \
self.linFitParameter, \
cl.LocalMemory(self.fitIntercept_memSize), cl.LocalMemory(self.fitIncline_memSize), \
cl.LocalMemory(self.rotatedUnitVector_memSize), \
self.meanParameter, \
self.buf_meanRangeXvalues, self.meanRangePositionOffset, \
cl.LocalMemory(self.localMembranePositions_memSize), \
self.dev_membraneCoordinates.data, \
self.dev_membraneNormalVectors.data, \
self.dev_fitInclines.data, \
kernelCoordinateStartingIndex, \
self.inclineTolerance, \
self.inclineRefinementRange)
barrierEvent = cl.enqueue_barrier(self.queue)
self.assertVector2EqualsExpectedResult(
self.dev_membraneCoordinates,
referencePath + '/' + referenceVariableName1 + '.npy')
self.assertVector2EqualsExpectedResult(
self.dev_membraneNormalVectors,
referencePath + '/' + referenceVariableName2 + '.npy')
self.assertVectorEqualsExpectedResult(
self.dev_fitInclines,
referencePath + '/' + referenceVariableName3 + '.npy')
pass
def _gpu_init(self):
"""Method to initialize all the data for GPU-accelerate search"""
self.gpu_data = {}
g = self.gpu_data
d = self.data
q = self.queue
# move data to the GPU. All should be float32, as these is the native
# lenght for GPUs
g['rcore'] = cl_array.to_device(q, float32array(d['rcore'].array))
g['rsurf'] = cl_array.to_device(q, float32array(d['rsurf'].array))
# Make the scanning chain object an Image, as this is faster to rotate
g['im_lsurf'] = cl.image_from_array(q.context,
float32array(d['lsurf'].array))
g['sampler'] = cl.Sampler(q.context, False, cl.addressing_mode.CLAMP,
cl.filter_mode.LINEAR)
if self.distance_restraints:
g['restraints'] = cl_array.to_device(q,
float32array(d['restraints']))
# Allocate arrays on the GPU
g['lsurf'] = cl_array.zeros_like(g['rcore'])
g['clashvol'] = cl_array.zeros_like(g['rcore'])
g['intervol'] = cl_array.zeros_like(g['rcore'])
g['interspace'] = cl_array.zeros(q, d['shape'], dtype=np.int32)
g['restspace'] = cl_array.zeros_like(g['interspace'])
g['access_interspace'] = cl_array.zeros_like(g['interspace'])
g['best_access_interspace'] = cl_array.zeros_like(g['interspace'])
# arrays for counting
# Reductions are typically tedious on GPU, and we need to define the
# workgroupsize to allocate the correct amount of data
WORKGROUPSIZE = 32
nsubhists = int(np.ceil(g['rcore'].size / WORKGROUPSIZE))
g['subhists'] = cl_array.zeros(q, (nsubhists, d['nrestraints'] + 1),
dtype=np.float32)
g['viol_counter'] = cl_array.zeros(
q, (nsubhists, d['nrestraints'], d['nrestraints']),
dtype=np.float32)
# complex arrays
g['ft_shape'] = list(d['shape'])
g['ft_shape'][0] = d['shape'][0] // 2 + 1
g['ft_rcore'] = cl_array.zeros(q, g['ft_shape'], dtype=np.complex64)
g['ft_rsurf'] = cl_array.zeros_like(g['ft_rcore'])
g['ft_lsurf'] = cl_array.zeros_like(g['ft_rcore'])
g['ft_clashvol'] = cl_array.zeros_like(g['ft_rcore'])
g['ft_intervol'] = cl_array.zeros_like(g['ft_rcore'])
# other miscellanious data
g['nrot'] = d['nrot']
g['max_clash'] = d['max_clash']
g['min_interaction'] = d['min_interaction']
# kernels
g['k'] = Kernels(q.context)
g['k'].rfftn = pyclfft.RFFTn(q.context, d['shape'])
g['k'].irfftn = pyclfft.iRFFTn(q.context, d['shape'])
# initial calculations
g['k'].rfftn(q, g['rcore'], g['ft_rcore'])
g['k'].rfftn(q, g['rsurf'], g['ft_rsurf'])
def test_image_3d(ctx_factory):
#test for image_from_array for 3d image of float2
context = ctx_factory()
device, = context.devices
if not device.image_support:
from pytest import skip
skip("images not supported on %s" % device)
if device.platform.vendor == "Intel(R) Corporation":
from pytest import skip
skip("images crashy on %s" % device)
_skip_if_pocl(device.platform, 'pocl does not support CL_ADDRESS_CLAMP')
prg = cl.Program(
context, """
__kernel void copy_image_plane(
__global float2 *dest,
__read_only image3d_t src,
sampler_t samp,
int stride0,
int stride1)
{
int d0 = get_global_id(0);
int d1 = get_global_id(1);
int d2 = get_global_id(2);
/*
const sampler_t samp =
CLK_NORMALIZED_COORDS_FALSE
| CLK_ADDRESS_CLAMP
| CLK_FILTER_NEAREST;
*/
dest[d0*stride0 + d1*stride1 + d2] = read_imagef(
src, samp, (float4)(d2, d1, d0, 0)).xy;
}
""").build()
num_channels = 2
shape = (3, 4, 2)
a = np.random.random(shape + (num_channels, )).astype(np.float32)
queue = cl.CommandQueue(context)
try:
a_img = cl.image_from_array(context, a, num_channels)
except cl.RuntimeError:
import sys
exc = sys.exc_info()[1]
if exc.code == cl.status_code.IMAGE_FORMAT_NOT_SUPPORTED:
from pytest import skip
skip("required image format not supported on %s" % device.name)
else:
raise
a_dest = cl.Buffer(context, cl.mem_flags.READ_WRITE, a.nbytes)
samp = cl.Sampler(context, False, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
prg.copy_image_plane(
queue,
shape,
None,
a_dest,
a_img,
samp,
np.int32(a.strides[0] / a.itemsize / num_channels),
np.int32(a.strides[1] / a.itemsize / num_channels),
)
a_result = np.empty_like(a)
cl.enqueue_copy(queue, a_result, a_dest)
good = la.norm(a_result - a) == 0
if not good:
if queue.device.type & cl.device_type.CPU:
assert good, (
"The image implementation on your CPU CL platform '%s' "
"returned bad values. This is bad, but common." %
queue.device.platform)
else:
assert good
def setup_device(self, imshape):
print('Setting up with imshape = %s' % (str(imshape)))
self.cached_shape = imshape
self.clIm = cla.Array(self.q, imshape, np.float32)
self.clm = cla.empty_like(self.clIm)
self.clx = cla.empty_like(self.clIm)
self.cly = cla.empty_like(self.clIm)
self.clO = cla.zeros_like(self.clIm)
self.clM = cla.zeros_like(self.clIm)
self.clF = cla.empty_like(self.clIm)
self.clS = cla.empty_like(self.clIm)
self.clThisS = cla.empty_like(self.clIm)
self.clScratch = cla.empty_like(self.clIm)
self.radial_prg = pyopencl.Program(self.ctx, RADIAL_PROGRAM).build()
self.sobel = Sobel(self.ctx, self.q)
#self.sepcorr2d = NaiveSeparableCorrelation(self.ctx, self.q)
self.sepcorr2d = LocalMemorySeparableCorrelation(self.ctx, self.q)
self.accum = ElementwiseKernel(self.ctx,
'float *a, float *b',
'a[i] += b[i]')
self.norm_s = ElementwiseKernel(self.ctx,
'float *s, const float nRadii',
's[i] = -1 * s[i] / nRadii',
'norm_s')
self.accum_s = ElementwiseKernel(self.ctx,
'float *a, float *b, const float nr',
'a[i] -= b[i] / nr')
self.gaussians = {}
self.gaussian_prgs = {}
self.minmax = MinMaxKernel(self.ctx, self.q)
# starburst storage
clImageFormat = cl.ImageFormat(cl.channel_order.R,
cl.channel_type.FLOAT)
self.clIm2D = cl.Image(self.ctx,
mf.READ_ONLY,
clImageFormat,
imshape)
# Create sampler for sampling image object
self.imSampler = cl.Sampler(self.ctx,
False, # Non-normalized coordinates
cl.addressing_mode.CLAMP_TO_EDGE,
cl.filter_mode.LINEAR)
self.cl_find_ray_boundaries = FindRayBoundaries(self.ctx, self.q)
self.calcF = self.radial_prg.calcF
self.calcOM = self.radial_prg.calcOM
def test_get_info(ctx_factory):
ctx = ctx_factory()
device, = ctx.devices
platform = device.platform
failure_count = [0]
pocl_quirks = [
(cl.Buffer, cl.mem_info.OFFSET),
(cl.Program, cl.program_info.BINARIES),
(cl.Program, cl.program_info.BINARY_SIZES),
]
if ctx._get_cl_version() >= (1, 2) and cl.get_cl_header_version() >= (1,
2):
pocl_quirks.extend([
(cl.Program, cl.program_info.KERNEL_NAMES),
(cl.Program, cl.program_info.NUM_KERNELS),
])
CRASH_QUIRKS = [ # noqa
(("NVIDIA Corporation", "NVIDIA CUDA", "OpenCL 1.0 CUDA 3.0.1"), [
(cl.Event, cl.event_info.COMMAND_QUEUE),
]),
(("NVIDIA Corporation", "NVIDIA CUDA", "OpenCL 1.2 CUDA 7.5"), [
(cl.Buffer, getattr(cl.mem_info, "USES_SVM_POINTER", None)),
]),
(("The pocl project", "Portable Computing Language",
"OpenCL 1.2 pocl 0.8-pre"), pocl_quirks),
(("The pocl project", "Portable Computing Language",
"OpenCL 1.2 pocl 0.8"), pocl_quirks),
(("The pocl project", "Portable Computing Language",
"OpenCL 1.2 pocl 0.9-pre"), pocl_quirks),
(("The pocl project", "Portable Computing Language",
"OpenCL 1.2 pocl 0.9"), pocl_quirks),
(("The pocl project", "Portable Computing Language",
"OpenCL 1.2 pocl 0.10-pre"), pocl_quirks),
(("The pocl project", "Portable Computing Language",
"OpenCL 1.2 pocl 0.10"), pocl_quirks),
(("Apple", "Apple", "OpenCL 1.2"), [
(cl.Program, cl.program_info.SOURCE),
]),
]
QUIRKS = [] # noqa
def find_quirk(quirk_list, cl_obj, info):
for (vendor, name, version), quirks in quirk_list:
if (vendor == platform.vendor and name == platform.name
and platform.version.startswith(version)):
for quirk_cls, quirk_info in quirks:
if (isinstance(cl_obj, quirk_cls) and quirk_info == info):
return True
return False
def do_test(cl_obj, info_cls, func=None, try_attr_form=True):
if func is None:
def func(info):
cl_obj.get_info(info)
for info_name in dir(info_cls):
if not info_name.startswith("_") and info_name != "to_string":
print(info_cls, info_name)
info = getattr(info_cls, info_name)
if find_quirk(CRASH_QUIRKS, cl_obj, info):
print("not executing get_info", type(cl_obj), info_name)
print("(known crash quirk for %s)" % platform.name)
continue
try:
func(info)
except:
msg = "failed get_info", type(cl_obj), info_name
if find_quirk(QUIRKS, cl_obj, info):
msg += ("(known quirk for %s)" % platform.name)
else:
failure_count[0] += 1
if try_attr_form:
try:
getattr(cl_obj, info_name.lower())
except:
print("failed attr-based get_info", type(cl_obj),
info_name)
if find_quirk(QUIRKS, cl_obj, info):
print("(known quirk for %s)" % platform.name)
else:
failure_count[0] += 1
do_test(platform, cl.platform_info)
do_test(device, cl.device_info)
do_test(ctx, cl.context_info)
props = 0
if (device.queue_properties
& cl.command_queue_properties.PROFILING_ENABLE):
profiling = True
props = cl.command_queue_properties.PROFILING_ENABLE
queue = cl.CommandQueue(ctx, properties=props)
do_test(queue, cl.command_queue_info)
prg = cl.Program(
ctx, """
__kernel void sum(__global float *a)
{ a[get_global_id(0)] *= 2; }
""").build()
do_test(prg, cl.program_info)
do_test(prg,
cl.program_build_info,
lambda info: prg.get_build_info(device, info),
try_attr_form=False)
n = 2000
a_buf = cl.Buffer(ctx, 0, n * 4)
do_test(a_buf, cl.mem_info)
kernel = prg.sum
do_test(kernel, cl.kernel_info)
evt = kernel(queue, (n, ), None, a_buf)
do_test(evt, cl.event_info)
if profiling:
evt.wait()
do_test(evt,
cl.profiling_info,
lambda info: evt.get_profiling_info(info),
try_attr_form=False)
# crashes on intel...
# and pocl does not support CL_ADDRESS_CLAMP
if device.image_support and platform.vendor not in [
"Intel(R) Corporation",
"The pocl project",
]:
smp = cl.Sampler(ctx, False, cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
do_test(smp, cl.sampler_info)
img_format = cl.get_supported_image_formats(
ctx, cl.mem_flags.READ_ONLY, cl.mem_object_type.IMAGE2D)[0]
img = cl.Image(ctx, cl.mem_flags.READ_ONLY, img_format, (128, 256))
assert img.shape == (128, 256)
img.depth
img.image.depth
do_test(img, cl.image_info, lambda info: img.get_image_info(info))
def gpu_filter(in_put='in.jpg'):
gpu_filter_ = GpuFilter()
image_objects = [0, 0]
# if len(sys.argv) != 3:
# print " : " + sys.argv[0] + " <inputImageFile> <outputImageFile>"
# exit()
# Create an OpenCL context on first available platform
context, device = gpu_filter_.create_context()
if context is None:
print "Failed to create OpenCL context."
exit()
# Create a command-queue on the first device available on the context that has been created
command_queue = cl.CommandQueue(context, device)
# Make sure the device supports images, otherwise exit
if not device.get_info(cl.device_info.IMAGE_SUPPORT):
print "OpenCL device does not support images."
exit()
# Load input image from file and load it into an OpenCL image object
image_objects[0], img_size = gpu_filter_.load_image(context, in_put)
# print image_objects[0], img_size
# Create output image object
cl_image_format = cl.ImageFormat(cl.channel_order.RGBA,
cl.channel_type.UNORM_INT8)
image_objects[1] = cl.Image(context, cl.mem_flags.WRITE_ONLY,
cl_image_format, img_size)
# Create sampler for sampling image object
sampler = cl.Sampler(
context,
False, # Non-normalized coordinates
cl.addressing_mode.CLAMP,
cl.filter_mode.NEAREST)
# Create OpenCL program
program = gpu_filter_.create_program(context, device, "ImageFilter2D.cl")
# Call the kernel directly
local_work_size = (16, 16)
global_work_size = (gpu_filter_.round_up(local_work_size[0], img_size[0]),
gpu_filter_.round_up(local_work_size[1], img_size[1]))
program.gaussian_filter(command_queue, global_work_size, local_work_size,
image_objects[0], image_objects[1], sampler,
numpy.int32(img_size[0]), numpy.int32(img_size[1]))
# Read the output buffer back to the Host
cl_buffer = numpy.zeros(img_size[0] * img_size[1] * 4, numpy.uint8)
origin = (0, 0, 0)
region = (img_size[0], img_size[1], 1)
cl.enqueue_read_image(command_queue, image_objects[1], origin, region,
cl_buffer).wait()
print "Executed program successfully."
# return the image matrix
return gpu_filter_.image_convert(cl_buffer, img_size)
