Hi everyone, While going through the RTK installation documentation, I came across the RTK_CUDA_PROJECTIONS_SLAB_SIZE parameter, which can be configured during the CMake process. This parameter defines the number of projections processed simultaneously during CUDA processing, with the default value set to 16.
My understanding is that increasing this value should, in theory, reduce the overall runtime of the FDK reconstruction when using CUDA. However, I tried increasing it to 32 and 64, but observed no noticeable improvement in runtime. I'm using an NVIDIA Quadro RTX 6000 GPU. Has anyone else experimented with this parameter or can provide insight into why changing the value doesn't seem to affect performance? Any suggestions or guidance would be appreciated! Thank you!
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