Implement stream priority feature

[dmenig]

Solves https://github.com/inducer/pycuda/issues/319

I'm not exactly sure my work is proper, I'm more a python guy than C++. Can you share your thoughts @inducer please ?

[dmenig]

Thanks for your contribution, and sorry about the long delay in reviewing this.

Gitlab CI link: https://gitlab.tiker.net/inducer/pycuda/-/commit/c08a582c48d1b28e201adb0b2f5a1adec1f5eef6/pipelines?ref=issue_319

Do you know how to solve this ?

        src/wrapper/wrap_cudadrv.cpp:1202:87: error: no matching function for call to ‘pycudaboost::python::init<unsigned int, int>::init(pycudaboost::python::arg&, pycudaboost::python::arg&)’
         1202 |       ("Stream", py::init<unsigned int, int>(py::arg("flags")=0, py::arg("priority")=0))

I tried removing the int arg and am waiting for the CI result but I'm doubtful that is the problem. I'm puzzled.

[inducer]

I tried removing the int arg and am waiting for the CI result but I'm doubtful that is the problem. I'm puzzled.

Does it compile for you locally?

[inducer]

Pushed to Gitlab for CI, find results via https://gitlab.tiker.net/inducer/pycuda/-/commits/issue_319

[inducer]

(Pushed once again.)

[dmenig]

I tried removing the int arg and am waiting for the CI result but I'm doubtful that is the problem. I'm puzzled.

Does it compile for you locally?

I didn't try to do that. I usually use my CI for back and forth. I'll see if I manage to do that.

[dmenig]

I managed to repoduce the CI results on my machine. I think this larger message is interesting :

    src/wrapper/wrap_cudadrv.cpp:1202:87: error: no matching function for call to ‘pycudaboost::python::init<unsigned int, int>::init(pycudaboost::python::arg&, pycudaboost::python::arg&)’       1202 |       ("Stream", py::init<unsigned int, int>(py::arg("flags")=0, py::arg("priority")=0))                                                                                                    |                                                                                       ^                                                                                               In file included from bpl-subset/bpl_subset/boost/python/class.hpp:20,                                                                                                                                         from bpl-subset/bpl_subset/boost/python.hpp:18,                                                                                                                          
                     from src/cpp/cuda.hpp:36,                                                                                                                                                
                     from src/wrapper/wrap_cudadrv.cpp:3:                                      
    bpl-subset/bpl_subset/boost/python/init.hpp:253:5: note: candidate: ‘template<long unsigned int N> pycudaboost::python::init<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T
14>::init(const pycudaboost::python::detail::keywords<N>&, const char*)’                                                                                                                      
      253 |     init(detail::keywords<N> const& kw, char const* doc_ = 0)                      
          |     ^~~~                                                                                                                                                                          
    bpl-subset/bpl_subset/boost/python/init.hpp:253:5: note:   template argument deduction/substitution failed:                                                                               
    src/wrapper/wrap_cudadrv.cpp:1202:85: note:   cannot convert ‘pycudaboost::python::detail::keywords<1>(((const char*)"priority")).pycudaboost::python::detail::keywords<1>::operator=<int>
(0)’ (type ‘pycudaboost::python::arg’ {aka ‘pycudaboost::python::detail::keywords<1>’}) to type ‘const char*’
     1202 |       ("Stream", py::init<unsigned int, int>(py::arg("flags")=0, py::arg("priority")=0))
          |                                                                      ~~~~~~~~~~~~~~~^~
    In file included from bpl-subset/bpl_subset/boost/python/class.hpp:20,
                     from bpl-subset/bpl_subset/boost/python.hpp:18,
                     from src/cpp/cuda.hpp:36,
                     from src/wrapper/wrap_cudadrv.cpp:3:
    bpl-subset/bpl_subset/boost/python/init.hpp:244:5: note: candidate: ‘template<long unsigned int N> pycudaboost::python::init<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T
14>::init(const char*, const pycudaboost::python::detail::keywords<N>&)’
      244 |     init(char const* doc_, detail::keywords<N> const& kw)
          |     ^~~~
    bpl-subset/bpl_subset/boost/python/init.hpp:244:5: note:   template argument deduction/substitution failed:

Looks like I can't supply two keywords with default value to this function, but I can't figure out why. Come to think of it : none of the other functions have two arguments with default values in this repo. Can you tell me how to solve this ?