Hi all, I am trying to write some code to do calculation onto an array: for each row I need to do some computation and have a number as return. To speed up the process I wrote a fortran subroutine that is called from python [using f2py] for each row of the array, so the input of this subroutine is a row and the output is a number. This method works but I saw some speed advantage if I pass the entire array to fortran and then, inside fortran, call the subroutine that does the math; so in this case I pass an array and return a vector. But I noticed that when python pass the array to fortran, the array is copied and the RAM usage double. Is there a way to "move" the array to fortran, I don't care if the array is lost after the call to fortran. The pyd module is generated using: python f2py.py -c --opt="-ffree-form -Ofast" -m F2PYMOD F2PYMOD.f90
Thanks Vasco
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