Tim wrote: > I think I want to stay away from mmap because it uses the disk to > store my memory.
My point is that, whatever mmap is doing, your own code is doing *exactly the same thing*. Passing the INVALID_HANDLE_VALUE as both your code and the mmap code are doing is documented as producing an area of memory backed by the page file (which, let's face it, is what all of your memory is backed by). Whether that's good enough for you or not I don't know, but you're not going to get any better with *this* technique :) [... snip explanation of C++ simulator and Python charting ...] OK, so your C++ stuff dumps to memory. Using CreateFileMapping and MapViewOfFile? Or some other kind of global memory? In short, if your C++ can write stuff out to shared memory created using CreateFileMapping/MapViewOfFile with a first param of INVALID_HANDLE_VALUE and a tag name, you can use Python's mmap with the equivalent values and tag name to access that data. Straightforward. If, on the other hand, your C++ is writing to arbitrary global memory, I don't think it's going to fly. You could also use named pipes, by the way, and possibly other Windows synching mechanisms. (He says, muddying the waters horribly). TJG -- http://mail.python.org/mailman/listinfo/python-list