def add_vec_to_cols(mat, vec, dest=None, alpha=1.0, beta=1.0):
'''
Add the element in vec to every element in mat in corresponding cols
The function behaves exactly like mat + vec in numpy
'''
mh, mw = mat.shape
vh, vw = vec.shape
assert (vw == 1 and vh == mw or vh == 1 and vw == mw)
if not dest:
dest = mat
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = mat.strides[0] / 4
_add_vec_to_cols_(F(alpha),
vec,
F(beta),
mat,
dest,
I(leading),
I(mh),
I(mw),
block=block,
grid=grid)
def relu_activate(input, output, e): mh, mw = input.shape block = (32, 32, 1) grid = (divup(mw, 32), divup(mh, 32)) leading = input.strides[0] / 4 _relu_activate_(input, output, F(e), I(leading), I(mh), I(mw), block=block , grid=grid)
def build_image(array):
if len(array.shape) == 4:
filter_size = array.shape[1]
else:
filter_size = array.shape[0]
num_filters = array.shape[-1]
num_cols = util.divup(80, filter_size)
num_rows = util.divup(num_filters, num_cols)
if len(array.shape) == 4:
big_pic = np.zeros((3, (filter_size + 1) * num_rows, (filter_size + 1) * num_cols))
else:
big_pic = np.zeros((filter_size * num_rows, filter_size * num_cols))
for i in range(num_rows):
for j in range(num_cols):
idx = i * num_cols + j
if idx >= num_filters: break
x = i*(filter_size + 1)
y = j*(filter_size + 1)
if len(array.shape) == 4:
big_pic[:, x:x+filter_size, y:y+filter_size] = array[:, :, :, idx]
else:
big_pic[x:x+filter_size, y:y+filter_size] = array[:, :, idx]
if len(array.shape) == 4:
return big_pic.transpose(1, 2, 0)
return big_pic
def relu_compute_grad(grad, output, outGrad, e):
mh, mw = grad.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = grad.strides[0] / 4
_relu_compute_grad_(grad, output, outGrad, F(e), I(leading), I(mh), I(mw), block=block, grid=
grid)
def tanh_activate(input, output, a, b): mh, mw = input.shape block = (32, 32, 1) grid = (divup(mw, 32), divup(mh, 32)) leading = input.strides[0] / 4 _n2b = -2.0 * b _tanh_activate_(input, output, F(a), F(_n2b), I(leading), I(mh), I(mw), block=block , grid=grid)
def tanh_compute_grad(grad, output, outGrad, a, b): mh, mw = output.shape block = (32, 32, 1) grid = (divup(mw, 32), divup(mh, 32)) leading = output.strides[0] / 4 _n4ab = -4.0 * a * b _tanh_compute_grad_(grad, output, outGrad, F(a), F(_n4ab), I(leading), I(mh), I(mw), block=block , grid=grid)
def eltwise_exp(src, dest = None):
if dest is None:
dest = src
mh, mw = src.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = src.strides[0] / 4
_eltwise_exp_(src, dest, I(mh), I(mw), I(leading), block = block, grid = grid)
def eltwise_exp(src, dest=None):
if dest is None:
dest = src
mh, mw = src.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = src.strides[0] / 4
_eltwise_exp_(src, dest, I(mh), I(mw), I(leading), block=block, grid=grid)
def softmax_bprop(mat, label, grad): mh, mw = mat.shape vh, vw = label.shape assert((vh == 1 and vw == mw) or (vw == 1 and vh == mw)), (vh, vw, mw) block = (32, 32, 1) grid = (divup(mw, 32), divup(mh, 32)) _softmax_bprop_(mat, label, grad, I(mat.strides[0] / 4), I(mh), I(mw), block=block, grid=grid)
def eltwise_mul(src, right, dest = None):
assert src.shape == right.shape
if dest is None:
dest = src
mh, mw = src.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = src.strides[0] / 4
_eltwise_mul_(src, right, dest, I(mh), I(mw), I(leading), block = block, grid = grid)
def gpu_partial_copy_to(x, y, row_from, row_to, col_from, col_to): mh, mw = x.shape row_to = min(row_to, mh) col_to = min(col_to, mw) r, c = row_to - row_from, col_to - col_from block = (32, 32, 1) grid = (divup(c, 32), divup(r, 32)) sleading, dleading = x.strides[0] / 4, y.strides[0] / 4 _gpu_partial_copy_to_(x, y, I(row_from), I(row_to), I(col_from), I(col_to), I(sleading), I(dleading), block=block, grid=grid)
def transpose(mat): mh, mw = mat.shape dst = gpuarray.empty((mw, mh), dtype=np.float32) block = (32, 32, 1) grid = (divup(mw, 32), divup(mh, 32)) sleading = mat.strides[0] / 4 dleading = dst.strides[0] / 4 _transpose_(mat, dst, I(sleading), I(dleading), I(mh), I(mw), block=block, grid=grid) return dst
def bigger_than_scaler(src, scaler, dest=None):
if dest is not None:
assert dest.shape == src.shape
else:
dest = src
mh, mw = src.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = src.strides[0] / 4
_bigger_than_scaler_(src, dest, F(scaler), I(mh), I(mw), I(leading), block=block , grid=grid)
def div_vec_to_cols(mat, vec, dest=None):
'''
Divide the element in corresponding column of matrix by the element in the vec
'''
mh, mw = mat.shape
vh, vw = vec.shape
if not dest:
dest = mat
block = (32, 32, 1)
grid = (divup(mw , 32), divup(mh, 32))
leading = mat.strides[0] / 4
_div_vec_to_cols_(vec, mat, dest, I(leading), I(mh), I(mw), block=block, grid=grid)
def relu_activate(input, output, e):
mh, mw = input.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = input.strides[0] / 4
_relu_activate_(input,
output,
F(e),
I(leading),
I(mh),
I(mw),
block=block,
grid=grid)
def relu_compute_grad(grad, output, outGrad, e):
mh, mw = grad.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = grad.strides[0] / 4
_relu_compute_grad_(grad,
output,
outGrad,
F(e),
I(leading),
I(mh),
I(mw),
block=block,
grid=grid)
def matrix_add(src, v, dest=None, alpha=1.0, beta=1.0):
sh, sw = src.shape
vh, vw = v.shape
#assert sh == vh and sw == vw
if sh != vh or sw != vw:
assert False, '(%s, %s) + (%s, %s)' % (sh, sw, vh, vw)
block = (32, 32, 1)
grid = (divup(sw, 32), divup(sh, 32))
leading = src.strides[0] / 4
if dest is None:
dest = src
_matrix_add_(src, v, dest, F(alpha), F(beta), I(leading), I(sh), I(sw),
block=block , grid=grid)
def softmax_bprop(mat, label, grad):
mh, mw = mat.shape
vh, vw = label.shape
assert ((vh == 1 and vw == mw) or (vw == 1 and vh == mw)), (vh, vw, mw)
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
_softmax_bprop_(mat,
label,
grad,
I(mat.strides[0] / 4),
I(mh),
I(mw),
block=block,
grid=grid)
def tanh_activate(input, output, a, b):
mh, mw = input.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = input.strides[0] / 4
_n2b = -2.0 * b
_tanh_activate_(input,
output,
F(a),
F(_n2b),
I(leading),
I(mh),
I(mw),
block=block,
grid=grid)
def add_vec_to_cols(mat, vec, dest=None, alpha=1.0, beta=1.0):
'''
Add the element in vec to every element in mat in corresponding cols
The function behaves exactly like mat + vec in numpy
'''
mh, mw = mat.shape
vh, vw = vec.shape
assert(vw == 1 and vh == mw or vh == 1 and vw == mw)
if not dest:
dest = mat
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = mat.strides[0] / 4
_add_vec_to_cols_(F(alpha), vec, F(beta), mat, dest, I(leading), I(mh), I(mw), block=block, grid=grid)
def tanh_compute_grad(grad, output, outGrad, a, b):
mh, mw = output.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = output.strides[0] / 4
_n4ab = -4.0 * a * b
_tanh_compute_grad_(grad,
output,
outGrad,
F(a),
F(_n4ab),
I(leading),
I(mh),
I(mw),
block=block,
grid=grid)
def eltwise_mul(src, right, dest=None):
assert src.shape == right.shape
if dest is None:
dest = src
mh, mw = src.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = src.strides[0] / 4
_eltwise_mul_(src,
right,
dest,
I(mh),
I(mw),
I(leading),
block=block,
grid=grid)
def transpose(mat):
mh, mw = mat.shape
dst = gpuarray.empty((mw, mh), dtype=np.float32)
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
sleading = mat.strides[0] / 4
dleading = dst.strides[0] / 4
_transpose_(mat,
dst,
I(sleading),
I(dleading),
I(mh),
I(mw),
block=block,
grid=grid)
return dst
def _shuffle_batches(self):
# build index vector into 'images' and split into groups of batch-size
image_index = np.arange(len(self.images))
np.random.shuffle(image_index)
self.batches = np.array_split(image_index,
util.divup(len(self.images), self.batch_size))
self.batch_range = range(len(self.batches))
np.random.shuffle(self.batch_range)
def attach(self, prev_layer):
image_shape = prev_layer.get_output_shape()
self.numColor, self.img_size, _, self.batch_size = image_shape
self.outputSize = 1 + divup(2 * self.padding + self.img_size - self.filterSize, self.stride)
self.modules = self.outputSize ** 2
weight_shape = (self.filterSize * self.filterSize * self.numColor, self.numFilter)
bias_shape = (self.numFilter, 1)
self._init_weights(weight_shape, bias_shape)
def _shuffle_batches(self):
# build index vector into 'images' and split into groups of batch-size
image_index = np.arange(len(self.images))
np.random.shuffle(image_index)
self.batches = np.array_split(
image_index, util.divup(len(self.images), self.batch_size))
self.batch_range = range(len(self.batches))
np.random.shuffle(self.batch_range)
def gpu_partial_copy_to(x, y, row_from, row_to, col_from, col_to):
mh, mw = x.shape
row_to = min(row_to, mh)
col_to = min(col_to, mw)
r, c = row_to - row_from, col_to - col_from
block = (32, 32, 1)
grid = (divup(c, 32), divup(r, 32))
sleading, dleading = x.strides[0] / 4, y.strides[0] / 4
_gpu_partial_copy_to_(x,
y,
I(row_from),
I(row_to),
I(col_from),
I(col_to),
I(sleading),
I(dleading),
block=block,
grid=grid)
def bigger_than_scaler(src, scaler, dest=None):
if dest is not None:
assert dest.shape == src.shape
else:
dest = src
mh, mw = src.shape
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = src.strides[0] / 4
_bigger_than_scaler_(src,
dest,
F(scaler),
I(mh),
I(mw),
I(leading),
block=block,
grid=grid)
def div_vec_to_cols(mat, vec, dest=None):
'''
Divide the element in corresponding column of matrix by the element in the vec
'''
mh, mw = mat.shape
vh, vw = vec.shape
if not dest:
dest = mat
block = (32, 32, 1)
grid = (divup(mw, 32), divup(mh, 32))
leading = mat.strides[0] / 4
_div_vec_to_cols_(vec,
mat,
dest,
I(leading),
I(mh),
I(mw),
block=block,
grid=grid)
def matrix_add(src, v, dest=None, alpha=1.0, beta=1.0):
sh, sw = src.shape
vh, vw = v.shape
#assert sh == vh and sw == vw
if sh != vh or sw != vw:
assert False, '(%s, %s) + (%s, %s)' % (sh, sw, vh, vw)
block = (32, 32, 1)
grid = (divup(sw, 32), divup(sh, 32))
leading = src.strides[0] / 4
if dest is None:
dest = src
_matrix_add_(src,
v,
dest,
F(alpha),
F(beta),
I(leading),
I(sh),
I(sw),
block=block,
grid=grid)
def attach(self, prev):
image_shape = prev.get_output_shape()
self.numColor, self.img_size, _, self.batch_size = image_shape
self.outputSize = divup(self.img_size - self.poolSize - self.start, self.stride) + 1
assert self.numColor % 16 == 0,\
'Pool layers require colors to be a multiple of 16: got %s' % self.numColor
def __init__(self, data_dir, batch_range=None, category_range=None, batch_size=1024):
DataProvider.__init__(self, data_dir, batch_range)
self.img_size = 256
self.border_size = 16
self.inner_size = 224
self.batch_size = batch_size
# self.multiview = dp_params['multiview_test'] and test
self.multiview = 0
self.num_views = 5 * 2
self.data_mult = self.num_views if self.multiview else 1
self.buffer_idx = 0
dirs = glob.glob(data_dir + '/n*')
synid_to_dir = {}
for d in dirs:
synid_to_dir[basename(d)[1:]] = d
if category_range is None:
cat_dirs = dirs
else:
cat_dirs = []
for i in category_range:
synid = self.batch_meta['label_to_synid'][i]
# util.log('Using category: %d, synid: %s, label: %s', i, synid, self.batch_meta['label_names'][i])
cat_dirs.append(synid_to_dir[synid])
self.images = []
batch_dict = dict((k, k) for k in self.batch_range)
for d in cat_dirs:
img_files = list()
img_files.extend(glob.glob(d + '/*.jpg'))
img_files.extend(glob.glob(d + '/*.jpeg'))
img_files.extend(glob.glob(d + '/*.JPG'))
img_files.extend(glob.glob(d + '/*.JPEG'))
img_files.sort()
imgs = [v for i, v in enumerate(img_files) if i in batch_dict]
self.images.extend(imgs)
self.images = np.array(self.images)
# build index vector into 'images' and split into groups of batch-size
image_index = np.arange(len(self.images))
np.random.shuffle(image_index)
self.batches = np.array_split(image_index,
util.divup(len(self.images), batch_size))
self.batch_range = range(len(self.batches))
util.log('Starting data provider with %d batches', len(self.batches))
np.random.shuffle(self.batch_range)
imagemean = cPickle.loads(open(data_dir + "image-mean.pickle").read())
self.data_mean = (imagemean['data']
.astype(np.single)
.T
.reshape((3, 256, 256))[:, self.border_size:self.border_size + self.inner_size, self.border_size:self.border_size + self.inner_size]
.reshape((self.get_data_dims(), 1)))
def __init__(self, data_dir, batch_range=None, category_range=None, batch_size=1024):
DataProvider.__init__(self, data_dir, batch_range)
self.img_size = 256
self.border_size = 16
self.inner_size = 224
self.batch_size = batch_size
# self.multiview = dp_params['multiview_test'] and test
self.multiview = 0
self.num_views = 5 * 2
self.data_mult = self.num_views if self.multiview else 1
self.buffer_idx = 0
dirs = glob.glob(data_dir + '/n*')
synid_to_dir = {}
for d in dirs:
synid_to_dir[basename(d)[1:]] = d
if category_range is None:
cat_dirs = dirs
else:
cat_dirs = []
for i in category_range:
synid = self.batch_meta['label_to_synid'][i]
# util.log('Using category: %d, synid: %s, label: %s', i, synid, self.batch_meta['label_names'][i])
cat_dirs.append(synid_to_dir[synid])
self.images = []
batch_dict = dict((k, k) for k in self.batch_range)
for d in cat_dirs:
img_files = list()
img_files.extend(glob.glob(d + '/*.jpg'))
img_files.extend(glob.glob(d + '/*.jpeg'))
img_files.extend(glob.glob(d + '/*.JPG'))
img_files.extend(glob.glob(d + '/*.JPEG'))
img_files.sort()
imgs = [v for i, v in enumerate(img_files) if i in batch_dict]
self.images.extend(imgs)
self.images = np.array(self.images)
# build index vector into 'images' and split into groups of batch-size
image_index = np.arange(len(self.images))
np.random.shuffle(image_index)
self.batches = np.array_split(image_index,
util.divup(len(self.images), batch_size))
self.batch_range = range(len(self.batches))
util.log('Starting data provider with %d batches', len(self.batches))
np.random.shuffle(self.batch_range)
imagemean = cPickle.loads(open(data_dir + "image-mean.pickle").read())
self.data_mean = (imagemean['data']
.astype(np.single)
.T
.reshape((3, 256, 256))[:, self.border_size:self.border_size + self.inner_size, self.border_size:self.border_size + self.inner_size]
.reshape((self.get_data_dims(), 1)))
def attach(self, prev):
image_shape = prev.get_output_shape()
self.numColor, self.img_size, _, self.batch_size = image_shape
self.outputSize = divup(self.img_size - self.poolSize - self.start, self.stride) + 1
assert self.numColor % 16 == 0,\
'Pool layers require colors to be a multiple of 16: got %s' % self.numColor
