def find_media_file(self, item):
        for m in self.media_files:
            if m.title.replace('Tag', 'Applied') == item.title:
                return m
        raise AssertionError(u"No MediaFile found for Item " +
                             util.displayable_path(item.path))
computes a sum of all of the arrays pointed to by a_arr_gpu and a_ptr_gpu
dataset/ETHPy150Open beetbox/beets/test/test_importadded.py/ImportAddedTest.find_media_file--crossover with--dataset/ETHPy150Open rll/lfd/lfd/tpsopt/culinalg_exts.py/batch_sum