By default the nvidia-settings tool is used to obtain the GPU temperature. The configure switch "-with-nvcontrol=/absolute/path/to/libnvcontrol-dir" can be used to increase Kimas performance. Using this switch the libXNVCtrl.a gets statically compiled/linked into libkima.so and is used to query the temperature(s) of your NVidia card. The most recent nvidia-settings sourcecode can be downloaded from: ftp://download.nvidia.com/XFree86/nvidia-settings. Here is an usage example: