malloc-realloc-free

How to reimplement malloc realloc and free to use managed memory

Usage

In code using malloc/realloc/free functions, #include <cuda_managed_mem.h>, and replace with

• malloc with cuda_managed_mem_malloc
• free with cuda_managed_mem_free
• realloc with cuda_managed_mem_realloc

Then, compile cuda_managed_mem.cu and link it with main binary.

When compiling with -DUSEREALLOC=1, regular system calls are used. When compiling with -DUSERALLOC=0 or undefined, then cuda managed memory is used.

Logging troubleshooting information can be done defining -DLOGGING=1 when compiling cuda_managed_mem.cu.