Understanding the "Warning: num samples per thread reduced to 32768" Error
Warning: num samples per thread reduced to 32768 rendering might be slower Understanding the "Warning: num samples per thread reduced
However, Windows and Linux drivers, as well as the NVIDIA CUDA architecture, have limits on how much work a single kernel execution can handle before it risks a event—where the OS thinks the GPU has frozen and restarts the driver. To prevent a crash, the rendering engine automatically caps the samples per thread to 32,768 . Why Rendering Might Be Slower Windows and Linux drivers
When a path-tracing engine renders an image, it breaks the work into "samples." To maximize the power of your GPU, the engine tries to assign a specific number of samples to each "thread" (the tiny processing units on your graphics card). Understanding the "Warning: num samples per thread reduced