Euclidean norm (2-norm) of real vector.
Computes the Euclidean norm of an array.
Parameters: | x_gpu : pycuda.gpuarray.GPUArray
handle : int
|
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Returns: | nrm : real
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Examples
>>> import pycuda.autoinit
>>> import pycuda.gpuarray as gpuarray
>>> import numpy as np
>>> import linalg
>>> linalg.init()
>>> x = np.asarray(np.random.rand(4, 4), np.float32)
>>> x_gpu = gpuarray.to_gpu(x)
>>> nrm = linalg.norm(x_gpu)
>>> np.allclose(nrm, np.linalg.norm(x))
True
>>> x_gpu = gpuarray.to_gpu(np.array([3+4j, 12-84j]))
>>> linalg.norm(x_gpu)
85.0