[Swift-devel] Re: Memory in Swift

[Justin M Wozniak]

On Mon, 18 Oct 2010, Jonathan Monette wrote:

>    1) What is the maximum value for SWIFT_HEAP_MAX?  Is it the maximum 
> memory available on the machine?  If I ask for 8Gb will the Java heap space 
> be 8Gb?

In bin/swift, that value is passed directly to the Java VM, so it's 
implementation-specific.  What kind of machine are you on?

>    2) Assuming that the above question does not fix my problem, what can 
> be done to fix memory problems in Swift?  How should a Swift script be 
> programmed to avoid these issues or is how Swift handles memory not 
> optimal. I have a set of about 4100 images that will be stitched 
> together to form a mosaic.  The size of this set is 8.1Gb.  Right now in 
> my sites file I set SWIFT_HEAP_MAX to 4096M(4Gb) but I am still getting 
> out of memory errors with the Java heap space.  Is Swift just not able 
> to scale up to this size of data yet?

-- 
Justin M Wozniak