Picard MergeSamFile Memory Increase

[qqcandy]

Does anyone know how I can increase the memory allowance of Picard MergeSamFile? The current one always use around 2 to 3G, no matter how much memory the machine actually has... And I can't find any parameter in Picard MergeSamFile that control the memory...

Wondering whether MergeSamFile is faster with more than 3G memory too...

Thanks!

[drio]

Pass -Xmx XG to your virtual machine where XG is the amount of memory you want
to use.

Also, use the multithreading option (USE_THREADING=Boolean) that has been recently added to picard. That should increase the performance by 20% (From the picard docs).