Most efficient way to map function over numpy array
2016年2月5日 · What is the most efficient way to map a function over a numpy array? I am currently doing: import numpy as np x = np.array ( [1, 2, 3, 4, 5]) # Obtain array of square ...
python - Performance of Pandas apply vs np.vectorize to create …
2018年10月6日 · If np.vectorize() is in general always faster than df.apply(), then why is np.vectorize() not mentioned more? I only ever see StackOverflow posts related to df.apply(), …
simd - What is "vectorization"? - Stack Overflow
2009年9月14日 · Many CPUs have "vector" or "SIMD" instruction sets which apply the same operation simultaneously to two, four, or more pieces of data. Modern x86 chips have the SSE …
How to vectorize with gcc? - Stack Overflow
2009年1月3日 · The v4 series of the gcc compiler can automatically vectorize loops using the SIMD processor on some modern CPUs, such as the AMD Athlon or Intel Pentium/Core chips. …
c++ - What does vectorization mean? - Stack Overflow
2009年10月4日 · Is it a good idea to vectorize the code? What are good practices in terms of when to do it? What happens underneath?
Why is vectorization, faster in general, than loops?
2016年1月30日 · Why, at the lowest level of the hardware performing operations and the general underlying operations involved (i.e.: things general to all programming languages' actual …
Is it possible to numpy.vectorize an instance method?
2018年2月26日 · The decorator version @vectorize is harder to apply than the function version. Your method f takes two arguments, self and x. vectorize isn't smart enough to assign …
Using Numpy Vectorize on Functions that Return Vectors
The purpose of np.vectorize is to transform functions which are not numpy-aware (e.g. take floats as input and return floats as output) into functions that can operate on (and return) numpy arrays.
List comprehension, map, and numpy.vectorize performance
List comprehension, map, and numpy.vectorize performance Asked 15 years, 5 months ago Modified 5 years, 8 months ago Viewed 34k times
C++ auto-vectorization requirements for gcc, clang and msvc
2020年1月8日 · With GCC and clang, my code will be auto-vectorized if I compile with -O2 -ftree-vectorize -march=XYZ ? -O3 -march=XYZ ? Not necessarily, To enable vectorization of …