本文整理匯總了Python中cuda4py._py.CU.extract_ptr方法的典型用法代碼示例。如果您正苦於以下問題：Python CU.extract_ptr方法的具體用法？Python CU.extract_ptr怎麽用？Python CU.extract_ptr使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類cuda4py._py.CU的用法示例。
在下文中一共展示了CU.extract_ptr方法的9個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: dgemm
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def dgemm(self, transA, transB,
rowsCountA, columnCountB, commonSideLength,
alpha, A, B, beta, C,
strideA=0, strideB=0, strideC=0):
"""Double precision (double) GEneral Matrix Multiplication.
Matrices are always in column order.
C = alpha * dot(A, B) + beta * C
C = alpha * dot(A^T, B) + beta * C
C = alpha * dot(A, B^T) + beta * C
C = alpha * dot(A^T, B^T) + beta * C
alpha, A, B, beta, C can be numpy array, Memory object,
cffi pointer or int.
Parameters:
transA: how matrix A is to be transposed
(CUBLAS_OP_N, CUBLAS_OP_T, CUBLAS_OP_C).
transB: how matrix B is to be transposed
(CUBLAS_OP_N, CUBLAS_OP_T, CUBLAS_OP_C).
rowsCountA: number of rows in matrix A.
columnCountB: number of columns in matrix B.
commonSideLength: length of the common side of the matrices.
alpha: the factor of matrix A.
A: matrix A.
B: matrix B.
beta: the factor of matrix C.
C: Buffer object storing matrix C.
strideA: leading dimension of matrix A:
clblasTrans: >= commonSideLength,
else: >= rowsCountA.
strideB: leading dimension of matrix B:
clblasTrans: >= columnCountB,
else: >= commonSideLength.
strideC: leading dimension of matrix C: >= rowsCountA.
Returns:
None.
"""
if not strideA:
strideA = commonSideLength if transA != CUBLAS_OP_N else rowsCountA
if not strideB:
strideB = (columnCountB if transB != CUBLAS_OP_N
else commonSideLength)
if not strideC:
strideC = rowsCountA
err = self._lib.cublasDgemm_v2(
self.handle, transA, transB, rowsCountA, columnCountB,
commonSideLength, CU.extract_ptr(alpha), A, strideA,
B, strideB, CU.extract_ptr(beta), C, strideC)
if err:
raise CU.error("cublasDgemm_v2", err)示例2: transform_tensor
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def transform_tensor(self, alpha, src_desc, src_data,
beta, dest_desc, dest_data):
"""Transforms data from one layout to another
(interleaved to splitted for example).
Parameters:
alpha: src_data multiplier (numpy array with one element).
beta: dest_data multiplier (numpy array with one element).
"""
err = self._lib.cudnnTransformTensor(
self.handle, CU.extract_ptr(alpha), src_desc, src_data,
CU.extract_ptr(beta), dest_desc, dest_data)
if err:
raise CU.error("cudnnTransformTensor", err)示例3: pooling_forward
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def pooling_forward(self, pooling_desc, alpha, src_desc, src_data,
beta, dest_desc, dest_data):
"""Does pooling forward propagation.
Parameters:
alpha: src_data multiplier (numpy array with one element).
beta: dest_data multiplier (numpy array with one element).
"""
err = self._lib.cudnnPoolingForward(
self.handle, pooling_desc, CU.extract_ptr(alpha),
src_desc, src_data,
CU.extract_ptr(beta), dest_desc, dest_data)
if err:
raise CU.error("cudnnPoolingForward", err)示例4: convolution_backward_bias
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def convolution_backward_bias(self, alpha, src_desc, src_data,
beta, dest_desc, dest_data):
"""Computes gradient for the bias.
Parameters:
alpha: src_data multiplier (numpy array with one element).
beta: dest_data multiplier (numpy array with one element).
src_data: error for backpropagation.
dest_data: gradient for the bias.
"""
err = self._lib.cudnnConvolutionBackwardBias(
self.handle, CU.extract_ptr(alpha), src_desc, src_data,
CU.extract_ptr(beta), dest_desc, dest_data)
if err:
raise CU.error("cudnnConvolutionBackwardBias", err)示例5: convolution_forward
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def convolution_forward(
self, alpha, src_desc, src_data, filter_desc, filter_data,
conv_desc, algo, workspace, workspace_size,
beta, dest_desc, dest_data):
"""Does convolution forward propagation.
Parameters:
alpha: src_data multiplier (numpy array with one element).
beta: dest_data multiplier (numpy array with one element).
"""
size = ffi.new("size_t *")
err = self._lib.cudnnConvolutionForward(
self.handle, CU.extract_ptr(alpha), src_desc, src_data,
filter_desc, filter_data, conv_desc,
algo, workspace, workspace_size,
CU.extract_ptr(beta), dest_desc, dest_data)
if err:
raise CU.error("cudnnConvolutionForward", err)
return int(size[0])示例6: pooling_backward
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def pooling_backward(self, pooling_desc, alpha, output_desc, output_data,
diff_desc, diff_data, input_desc, input_data,
beta, grad_desc, grad_data):
"""Does pooling backward propagation.
Parameters:
alpha: diff_data multiplier (numpy array with one element).
beta: grad_data multiplier (numpy array with one element).
output: output of the forward propagation.
diff: error for backpropagation.
input: input of the forward propagation.
grad: backpropagated error.
"""
err = self._lib.cudnnPoolingBackward(
self.handle, pooling_desc, CU.extract_ptr(alpha),
output_desc, output_data,
diff_desc, diff_data, input_desc, input_data,
CU.extract_ptr(beta), grad_desc, grad_data)
if err:
raise CU.error("cudnnPoolingBackward", err)示例7: convolution_backward_data
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def convolution_backward_data(
self, alpha, filter_desc, filter_data, diff_desc, diff_data,
conv_desc, beta, grad_desc, grad_data,
algo=None, workspace=None, workspace_size=0):
"""Computes backpropagated error.
Parameters:
alpha: diff_data multiplier (numpy array with one element).
beta: grad_data multiplier (numpy array with one element).
filter_data: convolutional kernels.
diff_data: error for backpropagation.
grad_data: backpropagated error.
"""
if self.version < 4000:
err = self._lib.cudnnConvolutionBackwardData(
self.handle, CU.extract_ptr(alpha), filter_desc, filter_data,
diff_desc, diff_data, conv_desc,
CU.extract_ptr(beta), grad_desc, grad_data)
elif algo is None:
err = self._lib.cudnnConvolutionBackwardData_v2(
self.handle, CU.extract_ptr(alpha), filter_desc, filter_data,
diff_desc, diff_data, conv_desc,
CU.extract_ptr(beta), grad_desc, grad_data)
else:
err = self._lib.cudnnConvolutionBackwardData(
self.handle, CU.extract_ptr(alpha), filter_desc, filter_data,
diff_desc, diff_data, conv_desc,
algo, workspace, workspace_size,
CU.extract_ptr(beta), grad_desc, grad_data)
if err:
raise CU.error("cudnnConvolutionBackwardData", err)示例8: convolution_backward_filter
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def convolution_backward_filter(
self, alpha, src_desc, src_data, diff_desc, diff_data, conv_desc,
beta, grad_desc, grad_data,
algo=None, workspace=None, workspace_size=0):
"""Computes gradient for the convolutional kernels.
Parameters:
alpha: src_data multiplier (numpy array with one element).
beta: grad_data multiplier (numpy array with one element).
src_data: input from the forward pass.
diff_data: error for backpropagation.
grad_data: gradient for convolutional kernels.
"""
if self.version < 4000:
err = self._lib.cudnnConvolutionBackwardFilter(
self.handle, CU.extract_ptr(alpha), src_desc, src_data,
diff_desc, diff_data, conv_desc,
CU.extract_ptr(beta), grad_desc, grad_data)
elif algo is None:
err = self._lib.cudnnConvolutionBackwardFilter_v2(
self.handle, CU.extract_ptr(alpha), src_desc, src_data,
diff_desc, diff_data, conv_desc,
CU.extract_ptr(beta), grad_desc, grad_data)
else:
err = self._lib.cudnnConvolutionBackwardFilter(
self.handle, CU.extract_ptr(alpha), src_desc, src_data,
diff_desc, diff_data, conv_desc,
algo, workspace, workspace_size,
CU.extract_ptr(beta), grad_desc, grad_data)
if err:
raise CU.error("cudnnConvolutionBackwardFilter", err)示例9: sgemm_ex
# 需要導入模塊: from cuda4py._py import CU [as 別名]
# 或者: from cuda4py._py.CU import extract_ptr [as 別名]
def sgemm_ex(self, transA, transB,
rowsCountA, columnCountB, commonSideLength,
alpha, A, B, beta, C,
strideA=0, strideB=0, strideC=0,
dtypeA=CUBLAS_DATA_HALF, dtypeB=CUBLAS_DATA_HALF,
dtypeC=CUBLAS_DATA_HALF):
"""Single precision (float) GEneral Matrix Multiplication
with support of different data types for each matrix.
Matrices are always in column order.
C = alpha * dot(A, B) + beta * C
C = alpha * dot(A^T, B) + beta * C
C = alpha * dot(A, B^T) + beta * C
C = alpha * dot(A^T, B^T) + beta * C
alpha, A, B, beta, C can be numpy array, Memory object,
cffi pointer or int.
Parameters:
transA: how matrix A is to be transposed
(CUBLAS_OP_N, CUBLAS_OP_T, CUBLAS_OP_C).
transB: how matrix B is to be transposed
(CUBLAS_OP_N, CUBLAS_OP_T, CUBLAS_OP_C).
rowsCountA: number of rows in matrix A.
columnCountB: number of columns in matrix B.
commonSideLength: length of the common side of the matrices.
alpha: the factor of matrix A.
A: matrix A.
B: matrix B.
beta: the factor of matrix C.
C: Buffer object storing matrix C.
strideA: leading dimension of matrix A:
clblasTrans: >= commonSideLength,
else: >= rowsCountA.
strideB: leading dimension of matrix B:
clblasTrans: >= columnCountB,
else: >= commonSideLength.
strideC: leading dimension of matrix C: >= rowsCountA.
dtypeA: data type of matrix A
(CUBLAS_DATA_FLOAT, CUBLAS_DATA_DOUBLE,
CUBLAS_DATA_HALF, CUBLAS_DATA_INT8).
dtypeB: data type of matrix B
(CUBLAS_DATA_FLOAT, CUBLAS_DATA_DOUBLE,
CUBLAS_DATA_HALF, CUBLAS_DATA_INT8).
dtypeC: data type of matrix C
(CUBLAS_DATA_FLOAT, CUBLAS_DATA_DOUBLE,
CUBLAS_DATA_HALF, CUBLAS_DATA_INT8).
Returns:
None.
"""
if not strideA:
strideA = commonSideLength if transA != CUBLAS_OP_N else rowsCountA
if not strideB:
strideB = (columnCountB if transB != CUBLAS_OP_N
else commonSideLength)
if not strideC:
strideC = rowsCountA
err = self._lib.cublasSgemmEx(
self.handle, transA, transB, rowsCountA, columnCountB,
commonSideLength, CU.extract_ptr(alpha), A, dtypeA, strideA,
B, dtypeB, strideB, CU.extract_ptr(beta), C, dtypeC, strideC)
if err:
raise CU.error("cublasSgemmEx", err)