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Dynamic Parallelism

See original GitHub issue

I am interested in utilizing Dynamic Parallelism in my cupy projects.

extern "C"
{

__global__ void test_kernel_inner()
{
    printf("  Hello inner world!\n");

}

__global__ void test_kernel()
{
    printf("Hello outer world!\n");
    test_kernel_inner<<<2, 1>>>();
}

}

Trying to launch the above cuda code with the following commands

TestKernel = cp.RawKernel(Test, 'test_kernel', ('-rdc=true',))
TestKernel((1,),(1,),())

I get the error

  File "/home/palmerss/PycharmProjects/TestProject/Test.py", line 23, in <module>
    TestKernel((1,),(1,),())
  File "cupy/core/raw.pyx", line 51, in cupy.core.raw.RawKernel.__call__
  File "cupy/util.pyx", line 55, in cupy.util.memoize.decorator.ret
  File "cupy/core/raw.pyx", line 57, in cupy.core.raw._get_raw_kernel
  File "cupy/core/carray.pxi", line 125, in cupy.core.core.compile_with_cache
  File "cupy/core/carray.pxi", line 166, in cupy.core.core.compile_with_cache
  File "/home/palmerss/anaconda3/envs/TestProject/lib/python3.7/site-packages/cupy/cuda/compiler.py", line 168, in compile_with_cache
    cubin = ls.complete()
  File "cupy/cuda/function.pyx", line 216, in cupy.cuda.function.LinkState.complete
  File "cupy/cuda/function.pyx", line 217, in cupy.cuda.function.LinkState.complete
  File "cupy/cuda/driver.pyx", line 161, in cupy.cuda.driver.linkComplete
  File "cupy/cuda/driver.pyx", line 82, in cupy.cuda.driver.check_status
cupy.cuda.driver.CUDADriverError: CUDA_ERROR_UNKNOWN: unknown error