Request suggestions for cray xe6

[carlo antonio pignedoli]

Dear all,
I have the impression I am missing many recent improvements of the code,
I was not able to follow them.

I usually run  standard DFT calculations for bulk/surface systems with
700-1500 atoms (10 to 18 electrons each)
on a Cray Xe6 (AMD Interlagos 2 x 16-core 64-bit CPUs, 32 GB per compute node)

Do you have suggestions for parameters  that would allow for an optimal use of
this architecture? (a problem I have is the limited amount of memory
per core 1GB)

Thanks in advance for your help

Carlo