[Numpy-discussion] memmap on 64bit Linux for > 2 GB files

Sebastian Haase haase@msg.ucsf....
Tue Feb 6 16:29:38 CST 2007


Hi,
I finally tried to do the test, to memmap a large file
filesize: 2.8G

a memmap call gives this error:

{{{
>>> N.memmap('20050622-1648-Y_DEMO-1')
Traceback (most recent call last):
  File "<input>", line 1, in ?
  File "/jws30/haase/PrLinN64/numpy/core/memmap.py", line 67, in __new__
    mm = mmap.mmap(fid.fileno(), bytes, access=acc)
OverflowError: memory mapped size is too large (limited by C int)
}}}

I'm using a recent numpy on a 64bit Linux (debian etch, kernel:
2.6.16-2-em64t-p4-smp)
{{{
>>> N.__version__
'1.0.2.dev3509'
>>> N.int0
<type 'numpy.int64'>
}}}

Is this supposed to work ?

Thanks,
Sebastian


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