def main_ufunc():
ctx = cl.Context(device_type=cl.Device.GPU)
size = 10
a = ca.arange(ctx, size, ctype=c_float)
b = ca.arange(ctx, size, ctype=c_float).reshape([size, 1])
o1 = add(a, b)
with o1.map() as view:
print view
with a.map() as view:
print np.sum(view)
result = add.reduce(a)
result.queue.finish()
with a.map() as view:
print view
print view.sum()
print result.item()
def setUpModule():
global ctx
DEVICE_TYPE_ATTR = os.environ.get('DEVICE_TYPE', 'DEFAULT')
DEVICE_TYPE = getattr(cl.Device, DEVICE_TYPE_ATTR)
ctx = cl.Context(device_type=DEVICE_TYPE)
print(ctx.devices)
def main():
ctx = cl.Context()
a = cl.empty(ctx, [256], cly.float2)
queue = cl.Queue(ctx)
generate_sin(queue, a)
with a.map(queue) as view:
array = np.asarray(view)
print array
def main_reduce():
ctx = cl.Context(device_type=cl.Device.GPU)
sum = add.reduce
# for size in range(250, 258):
size = 1027
a = ca.arange(ctx, size, ctype=cl.cl_int)
result = sum(a)
with a.map() as view:
print size, view.sum(), result.item()
def main():
ctx = cl.Context(device_type=cl.Device.GPU)
queue = cl.Queue(ctx)
npa = np.arange(1.0 * 12.0, dtype=c_float)
a = ca.arange(ctx, 12, ctype=c_float)
out = ca.empty_like(a[:])
output = cl.broadcast(out, a[:].shape)
ca.blitz(queue, lambda: a[:] + a[:] + 1, out=output)
print npa[1:] + npa[:-1]
with out.map() as view:
print view
def main():
ctx = cl.Context(device_type=cl.Device.GPU)
ret = cl.empty(ctx, [16], 'l')
queue = cl.Queue(ctx)
print setslice.compile(ctx,
a=cl.global_memory('l'),
value=c_int,
source_only=True)
# print setslice(queue, ret[::2], c_int(6))
# print setslice(queue, ret[1::2], c_int(5))
with ret.map(queue) as foo:
print np.asarray(foo)
def main():
size = 10
a = np.random.rand(size).astype('f')
b = np.random.rand(size).astype('f')
ctx = cl.Context()
queue = cl.Queue(ctx)
cla = cl.from_host(ctx, a, copy=True)
clb = cl.from_host(ctx, b, copy=True)
clc = cl.empty(ctx, [size], ctype='f')
prg = cl.Program(
ctx, """
__kernel void add(__global const float *a,
__global const float *b, __global float *c)
{
int gid = get_global_id(0);
c[gid] = a[gid] + b[gid];
}
""").build()
add = prg.add
add.argtypes = cl.global_memory('f'), cl.global_memory(
'f'), cl.global_memory('f')
add.argnames = 'a', 'b', 'c'
add.global_work_size = lambda a: a.shape
add(queue, a=cla, b=clb, c=clc)
with clc.map(queue) as view:
print "view is a python memoryview object", view
arr = np.asarray(view)
print "Answer should be zero:"
print(arr - (a + b)).sum()
def main():
ctx = cl.Context(device_type=cl.Device.GPU)
queue = cl.Queue(ctx)
host_init = np.arange(8, dtype=c_float) + 1
device_input = cl.from_host(ctx, host_init)
output = ca.reduce(queue, lambda a, b: a + b, device_input)
print "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "
print "data:", host_init
print "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "
print "host sum:", host_init.sum()
with output.map(queue) as view:
print "device sum:", np.asarray(view).item()
output = ca.reduce(queue, lambda a, b: a * b, device_input, initial=1.0)
print "host product:", host_init.prod()
with output.map(queue) as view:
print "device product:", np.asarray(view).item()
def main():
import opencl as cl
ctx = cl.Context(device_type=cl.Device.GPU)
a = arange(ctx, 10.0)
'''
Created on Dec 15, 2011
@author: sean
'''
import opencl as cl
import clyther as cly
import clyther.runtime as clrt
#Always have to create a context.
ctx = cl.Context()
@cly.global_work_size(lambda a: [a.size])
@cly.kernel
def generate_sin(a):
gid = clrt.get_global_id(0)
n = clrt.get_global_size(0)
r = cl.cl_float(gid) / cl.cl_float(n)
# sin wave with 8 peaks
y = r * cl.cl_float(16.0 * 3.1415)
# x is a range from -1 to 1
a[gid].x = r * 2.0 - 1.0
# y is sin wave
# IPython log file
import numpy as np
import opencl as cl
from PySide.QtGui import *
from PySide.QtOpenGL import *
from OpenGL import GL
app = QApplication([])
qgl = QGLWidget()
qgl.makeCurrent()
props = cl.ContextProperties()
cl.gl.set_opengl_properties(props)
ctx = cl.Context(device_type=cl.Device.DEFAULT, properties=props)
#print cl.ImageFormat.supported_formats(ctx)
print ctx.devices
view = cl.gl.empty_gl(ctx, [10], ctype='ff')
view2 = cl.empty(ctx, [10], ctype='ff')
view.shape
print view
queue = cl.Queue(ctx)
with cl.gl.acquire(queue, view), view.map(queue) as buffer:
print np.asarray(buffer)
import clyther as cly
import opencl as cl
import clyther.runtime as clrt
@cly.global_work_size(lambda a: a.shape)
@cly.kernel
def foo(a):
x = clrt.get_global_id(0)
y = clrt.get_global_id(1)
a[x, y] = x + y * 100
ctx = cl.Context(device_type=cl.Device.CPU)
queue = cl.Queue(ctx)
a = cl.empty(ctx, [4, 4], 'f')
foo(queue, a)
print foo._compile(ctx, a=cl.global_memory('f'), source_only=True)
import numpy as np
with a.map(queue) as view:
print np.asarray(view)