Why Very Simple Renderscript Runs 3 Times Slower In Gpu Than In Cpu

My test platform: Development OS: Windows 7 32-bit Phone: Nexus 5 Phone OS version: Android 4.4 SDK bundle: adt-bundle-windows-x86-20131030 Build-tool version: 19 SDK tool version:

Solution 1:

Your script is doing no meaningful work, but you are potentially making additional copies of the data structure (can't guarantee what the GPU driver does in this case). Why not try an example that actually does something with the input, rather than just copying it directly to the output?