Hi, I'm new to ROS and I'm trying to compile OpenCV with IPP and TBB support. I've read the (very helpful) install guide at http://opencv.willowgarage.com/wiki/InstallGuide and have a couple of questions. 1) I've enabled IPP support, but don't see much of a performance payoff. If I do a nm on the OpenCV .so's, I can see IPP symbols (e.g. ippEnableCpu), so the linker's finding the IPP library. When I run my ROS code I can use lsof to see that the correct with-IPP OpenCV libraries are being loaded. Is there anything else I should check? Or is it just that my application isn't using the OpenCV functions that benefit from IPP? I'm running a 32-bit Ubuntu 9.10 (Karmic) system with two Xeon chips. I have version 6.1 of the IPP libs installed. 2) I'd like to use TBB as well. Per the Wiki, I've installed libtbb2 and libtbb-dev from a Lucid repo to get version 2.2 installed to the standard locations, but when I use cmake-gui and hit configure, I don't see an option to USE TBB. Is there something else I have to do? Possible hint: I'm running the plain vanilla 2.6.31-21-generic kernel, but in the TBB directories I see code that seems to be tied to the 2.6.16.21 kernel. Has anyone got OpenCV running with TBB on Karmic with the Lucid versions of TBB? Or am I just swimming upstream on this one? Thanks in advance, Polly