On 6/18/2007 9:24 PM, Mike Ressler wrote: > With python 2.5.1 and numpy 1.0.3 under Fedora 7 x86_64, I just now > memmap'ed a 10 GB image cube without any trouble.
You have a 64 bit system. On Linux, the off_t uses by mmap's offset is similar to a size_t. Although the larger off_t on a 64 bit system hides the problem for files of that size (10 GB), it is still there on a 32 bit system. Try to memory map the last 4096 bytes of that 10 GB file on a 32 bit system. Memory mapping a single page should not be a problem on any computer. You will see that memmap is broken. Although the offset problem is trivial to solve (it requires a small change to the memmap object), this is not the case with the i/o error problem. It is anything but trivial. Sturla Molden _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
