The OS must indeed supply the memory used by J and it's up to the OS to decide whether it can do so or not. Memory fragmentation can be an issue - rebooting might help the OS here, in some cases. Another issue is virtual memory (swapping to disk, and how that has been implemented).
That said, note also that 64 bit J uses twice the memory of 32 bit J, for storing fixed width integers (this has some subtleties but I imagine those can be ignored here). -- Raul On Sun, May 26, 2013 at 10:26 AM, Jeremy Smith <[email protected]> wrote: > Hi everyone, > > I was trying to take 9 boxes and multiply them all together, storing the > output in a single box. The first of the 9 boxes contains 12 numbers, the > second contains 11, and so on, so that the output of this calculation will > be a single box with 12*11*10*9*8*7*6*5*4=79,833,600 numbers. > > When I do this on Jgtk701 for Mac, the operation completes successfully and > requires about 10 seconds. On my windows machine I receive an "Out of > Memory" error. I'm using exactly the same series of commands. > > Do these errors vary by machine, or operating system? My windows laptop > has 8GB of RAM compared to my Mac's puny 4GB. > > Thanks, > Jeremy > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
