![]() ![]() GpuTest 0.7.0, Julia FP64 OpenGL 4.0 test – GeForce GTX Titan ![]() ![]() That allows some comparisons like the famous ratio between FP32 and FP64 we can read in many reviews(fp64 = 1/xx fp32)… The Julia fractal is also available with FP32 (single precision floating point) numbers. The Julia FP64 test requires an OpenGL 4 capable GPU and the support of the GL_ARB_gpu_shader_fp64 extension. In the freshly released GpuTest 0.7.0 (for Windows, Linux and Mac OS X), we can find a Julia fractal rendered in GLSL using double precision floating point (or FP64) numbers. But when the FP64 is ON, FP32 performance drops by around 15%. When FP64 is enabled, the Julia FP64 score is this time correct and is around 1/3 FP32 (FP32 when FP64 is OFF). Note that turning on this setting reduces performance for all non-CUDA programs, including games But full speed FP64 support comes with a price: FP32 performance is impacted as it’s described in the NVCPL: UPDATE (2014.03.06): there is an option in the NVIDIA control panel to enable or disable full speed FP64 support for the GeForce GTX Titan. UPDATE (2014.04.15): The scores of the AMD FirePro W9100 are available HERE. ![]()
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