jacopoantonello/dmlib

Deformable mirror calibration and control library

dmlib's Issues

calibration not terminating. MemoryError

Version for dmlib-0.0.21 for the calibration. Data aquisiton like 2 month old version with 3 Steps.
Using a uEye and alpao DM97-15 with 97 actuators.
PC specs: AMD Ryzen Threadripper 1920X 12-Core, 128 GB Ram using Python 3.7.4(Anaconda)
Run: Python.exe calibration.py in anaconda prompt. Just removed the .decode('utf-8') in line 30 since it was already a String and therefore raising an error and changed finame and radius_um.
Get the following output:
Computing Zernike polynomials ...
Computing masks ...
Computing phases 00.00% ...
24 times Computing Zernike polynomials ...

Then the ram is slowly filling with cpu at 100%

then with full ram:
a few times "Computing masks ..." and then multiple times
MemoryError
Computing masks ...
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\xx\Anaconda3\lib\multiprocessing\spawn.py", line 105, in spawn_main
exitcode = _main(fd)
File "C:\Users\xx\Anaconda3\lib\multiprocessing\spawn.py", line 114, in _main
prepare(preparation_data)
File "C:\Users\xx\Anaconda3\lib\multiprocessing\spawn.py", line 225, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "C:\Users\xx\Anaconda3\lib\multiprocessing\spawn.py", line 277, in _fixup_main_from_path
run_name="mp_main")
File "C:\Users\xx\Anaconda3\lib\runpy.py", line 263, in run_path
pkg_name=pkg_name, script_name=fname)
File "C:\Users\xx\Anaconda3\lib\runpy.py", line 96, in _run_module_code
mod_name, mod_spec, pkg_name, script_name)
File "C:\Users\xx\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "T:\xxx\dmlib\dmlib\examples\calibration.py", line 61, in
status_cb=print)
File "C:\Users\xx\Anaconda3\lib\site-packages\dmlib\calibration.py", line 156, in calibrate
zfA1, zfA2, mask = self._make_zfAs()
File "C:\Users\xx\Anaconda3\lib\site-packages\dmlib\calibration.py", line 107, in _make_zfAs
zfA1 = np.zeros((self.zfm.sum(), self.cart.nk))

and it seems like it was loading the .h5 file again. And next I got "Computing phases 00.00% ..." followed by the error multipl times:

RuntimeError:
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.

here I killed the process after some time. I tried this with other amount of steps and older versions but it never terminated within a reasonable time sometime I even let it run over night.

Is this normal and I just have not enough ram? Do you have any ideas how to solve this problem?