cudaMallocManaged() returns “operation not supported”

Question

Trying out managed memory in CUDA 6.0 gives me operation not supported when calling cudaMallocManaged().

#include \"cuda_runtime.h         


        

Answer 1

Tried 32-bit debug and release builds.

Use a 64 bit debug or release build.

From the documentation:

J.1.4. System Requirements

Unified Memory has three basic requirements:

•a GPU with SM architecture 3.0 or higher (Kepler class or newer)

•a 64-bit host application and operating system, except on Android

•Linux or Windows

64 bit host application means you cannot compile for a 32 bit debug or release build.