Catalyst 11.4 (5870) or newer slow down NVIDIA Bitonic Sort and others

Discussion created by rubens on Jul 29, 2011

Using Catalyst 11.3 and APP SDK 4.0, everything goes as waited.

When using Catalyst 11.4 or newer:

Radix sort from NVIDIA SDK became a little faster, but Bitonic Sort and atomic operations (global atomic inc)  appear worse.

Anyone saw that?

(bitonic sort from particles demo)

radeon 5870, windows vista 64, service pack 2