Is there any way to write a bigger image?

[hroskes]

I'm trying to write some large images using Python. I have this code, based on the example in the docs.

import OpenEXR, Imath
import numpy as np

width = 32768
height = width
dtype = np.float32

h = OpenEXR.Header(width,height)
h['channels'] = {'R' : Imath.Channel(Imath.PixelType(Imath.PixelType.FLOAT))} 
o = OpenEXR.OutputFile("hello.exr", h)
r = np.zeros(shape=(height,width), dtype=dtype)
r[height//2-100:height//2+100,width//2-100:width//2+100] = 3.4
channels = {'R' : r.tobytes()}

o.writePixels(channels)
    
o.close()

It gives me

TypeError                                 Traceback (most recent call last)
Cell In[6], line 16
     13 r[height//2-100:height//2+100,width//2-100:width//2+100] = 3.4
     14 channels = {'R' : r.tobytes()}
---> 16 o.writePixels(channels)
     18 o.close()

TypeError: Data for channel 'R' should have size 0 but got 4294967296

For smaller width, it works fine. I guess it's some kind of limit on the size dtype used internally somewhere. Is there a workaround?