Work space / Computer memory

Work space / Computer memory

I'm running this code in which I establish the workspace needed and let's say :
lenw = 15*xtent*ytent*ztent
LenIW = 15*xtent*ytent*ztent
So the code needs 15 times the number of nodes on my grid. The problem comes when I use a larger 3D domain let's say 500x500x500 this means the code would need a workspace of 1.875e9 and my computer freezes. Is this a RAM memory problem or how could I make this run?

thank you

2 posts / 0 new
Last post
For more complete information about compiler optimizations, see our Optimization Notice.

You're asking for an array almost 2GB in size. What's probably happening is that Windows is trying to expand the swapfile and having a hard time of it - adding more RAM would help, but even so, you're pushing hard on the architectural limit of 32-bit Windows.

If you need a program that large, start considering a 64-bit system such as Itanium 2.


Steve - Intel Developer Support

Leave a Comment

Please sign in to add a comment. Not a member? Join today