Passing the PTX program to the CUDA driver directly

Question

The CUDA driver API provides loading the file containing PTX code from the filesystem. One usually does the following:

CUmodule module;
CUfunction function;
         


        

Answer 1

Use the cuModuleLoadDataEx function to load PTX source from a NULL-terminated string.

Answer 2

Taken from the ptxjit CUDA example:

Define the PTX program as a C string as

char myPtx32[] = "\n\
    .version 1.4\n\
    .target sm_10, map_f64_to_f32\n\
    .entry _Z8myKernelPi (\n\.param .u32 __cudaparm__Z8myKernelPi_data)\n\
    {\n\
    .reg .u16 %rh<4>;\n\
    .reg .u32 %r<8>;\n\

    // Other stuff

    .loc    28      18      0\n\
    exit;\n\
    }\n\
 ";

then

 cuModuleLoadDataEx(phModule, myPtx32, 0, 0, 0);

and finally

 cuModuleLoadDataEx(phModule, myPtx, 0, 0, 0);