[Numpy-discussion] Adding `offset` argument to np.lib.format.open_memmap and np.load

Sturla Molden sturla@molden...
Mon Feb 28 18:50:00 CST 2011


Den 01.03.2011 01:15, skrev Robert Kern:
> You can have each of those processes memory-map the whole file and
> just operate on their own slices. Your operating system's virtual
> memory manager should handle all of the details for you.

Mapping large files from the start will not always work on 32-bit 
systems. That is why mmap.mmap take an offset argument now (Python 2.7 
and 3.1.)

Making a view np.memmap with slices is useful on 64-bit but not 32-bit 
systems.

Sturla


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