Hi! I'm writing you this mail because I would like to do "advanced" use of ndarray memory allocation.
So here is a short description of my problem: I'm interfacing multidimensionnal Numpy array to C using the ctypes module. For now, there is no problem. The C program that will use the pointer to the data of the array runs on a CellBE architecture. The consequences are: * the adress of the beginning of the data of the array must be a multiple a 16 bytes (that could be specified using the attribute 'align' of dtype) * the memory allocated MUST be a multiple of 16 bytes, and that's my current problem, because I didn't find a way to specify it using dtypes... For now, the only arguments that I know that could be given to a dtype constructor are "names", "format", "offsets", "titles", "align"<[email protected]> Does any other arguments exist? I could do the assumption that try to access to the data outside the last element of the array won't produce a segfault, but, i would like to avoid as much as possible doing so dirty stuffs :-)) So, do the think there is a "clean" way to do what I want. For example, asking for an array of 2 lines and 7 columns of float32, so that the adress of the biginning of the data would be a multiple of 16 bytes (that's already possible) AND beeing sure that the allocated memory for the data would be at least 16 * sizeof(float32), instead of 14*sizeof(float32). Thanks for your help! -- David Doukhan
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