[Numpy-discussion] Reminder: code freeze for bet at the end of the WE
Sturla Molden
sturla at molden.no
Sat Mar 14 14:23:12 EDT 2009
>
> Will memmap be fixed to use offsets correctly before 1.3?
I posted this to scipy-dev (possibly wrong list) on March 9, so I'll
repeat it here: In Python 2.6, mmap has a offset keyword. NumPy's memmap
should use this to allow big files to be memory mapped on 32 bit systems.
Only a minor change is required:
if float(sys.version[:3]) > 2.5:
bytes = bytes - offset
mm = mmap.mmap(fid.fileno(), bytes, access=acc, offset=offset)
self = ndarray.__new__(subtype, shape, dtype=descr, buffer=mm,
offset=0, order=order)
else:
mm = mmap.mmap(fid.fileno(), bytes, access=acc)
self = ndarray.__new__(subtype, shape, dtype=descr, buffer=mm,
offset=offset, order=order)
Instead of just:
mm = mmap.mmap(fid.fileno(), bytes, access=acc)
self = ndarray.__new__(subtype, shape, dtype=descr, buffer=mm,
offset=offset, order=order)
Reagards,
Sturla Molden
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