python - Getting numpy Memory Error on (relatively) small matrix -

i trying create numpy array of dimensions getting memory error.

no_of_frames = 1404  no_of_cells = 136192 original_vals = np.zeros((no_of_frames, no_of_cells), dtype=np.float32) 

the error getting is:

difference_array = np.zeros((no_of_frames, no_of_cells), dtype=np.float32)     memoryerror 

according calculations 1404 x 136192 * 4 ~729 mb. seems pretty reasonable. machine running code on has 8 gb of ram. why getting error?

i appreciate this. thanks!

if working in 32bit python limited 32bit address space (~2gb)

if have other stuff going on maybe exceeding limit

in addition numpy requires contiguous memory space in order create lists ... means has find uninterupted 768mb block of ram (which kind of hard)