Dear list: I cannot seem to figure how to create arrays > 2 GB on a Mac Pro (using Intel chip and Tiger, 4.8). I have hand compiled both Python 2.5 and numpy 1.0.1, and cannot make arrays bigger than 2 GB. I also run out of space if I try and 3-6 several arrays of 1000 mb or so (the mem-alloc failure does not seem consistent, depends on whether I am creating them with a "numpy.ones()" call, or creating them on the fly by doing math with the other arrays "e.g., c = 4.3*a + 3.1*b"). Is this a numpy issue, or a Python 2.5 issue for the Mac? I have tried this on the SGI Altix, and this works fine. If there is a compile flag to turn on 64 bit support in the Mac compile, I would be glad to find out about it. Or do I have to wait for Leopard? Thanks. Lou Wicker ------------------------------------------------------------------------ ---- | Dr. Louis J. Wicker | NSSL/WRDD | National Weather Center | 120 David L. Boren Boulevard, Norman, OK 73072-7323 | | E-mail: Louis.Wicker@noaa.gov | HTTP: www.nssl.noaa.gov/~lwicker | Phone: (405) 325-6340 | Fax: (405) 325-6780 | | "Programming is not just creating strings of instructions | for a computer to execute. It's also 'literary' in that you | are trying to communicate a program structure to | other humans reading the code." - Paul Rubin | |"Real efficiency comes from elegant solutions, not optimized programs. | Optimization is always just a few correctness-preserving transformations | away." - Jonathan Sobel ------------------------------------------------------------------------ ---- | | "The contents of this message are mine personally and | do not reflect any position of the Government or NOAA." | ------------------------------------------------------------------------ ----