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#define OMPI_SKIP_MPICXX
#include <mpi.h>
#include "ng_mpi.hpp"
#include <type_traits>
#include "array.hpp"
#include "ngcore_api.hpp"
#ifdef NG_PYTHON
#include "pybind11/pytypes.h"
#include "python_ngcore.hpp"
#define MPI4PY_LIMITED_API 1
#define MPI4PY_LIMITED_API_SKIP_MESSAGE 1
#define MPI4PY_LIMITED_API_SKIP_SESSION 1
#include "mpi4py_pycapi.h" // mpi4py < 4.0.0
#endif
#ifdef MSMPI_VER
int MPI_Comm_create_group(MPI_Comm arg0, MPI_Group arg1, int arg2,
MPI_Comm* arg3) {
throw std::runtime_error(
"MPI_Comm_create_group not supported on Microsoft MPI");
}
static MPI_Datatype MPI_CXX_DOUBLE_COMPLEX;
#endif // MSMPI_VER
namespace ngcore {
static_assert(sizeof(MPI_Status) <= sizeof(NG_MPI_Status), "Size mismatch");
static_assert(alignof(MPI_Status) <= alignof(NG_MPI_Status), "Size mismatch");
int mpi2ng(int value) { return value; }
void* mpi2ng(void* ptr) { return ptr; }
NG_MPI_Status* mpi2ng(MPI_Status* status) {
return reinterpret_cast<NG_MPI_Status*>(status);
}
#if !defined(MPICH) && !defined(MSMPI_VER)
NG_MPI_Comm mpi2ng(MPI_Comm comm) { return reinterpret_cast<uintptr_t>(comm); }
#endif
template <size_t size, size_t stride>
void gather_strided_array(size_t count, char* data) {
static_assert(size <= stride, "Size must be less than or equal to stride");
if constexpr (size < stride) {
char* dst = data;
char* src = data;
for ( [[maybe_unused]] auto i : Range(count)) {
memcpy(dst, src, size);
dst += size;
src += stride;
}
}
}
template <typename T>
T cast_ng2mpi(uintptr_t obj) {
if constexpr (std::is_pointer_v<T>)
return reinterpret_cast<T>(obj);
else
return static_cast<T>(obj);
}
template <typename T>
T cast_ng2mpi(uintptr_t* ptr) {
if constexpr (std::is_pointer_v<T>)
return reinterpret_cast<T>(ptr);
else
return static_cast<T>(ptr);
}
template <typename T, typename TSrc>
T* cast_ng2mpi(TSrc* ptr, int count) {
gather_strided_array<sizeof(T), sizeof(TSrc)>(count,
reinterpret_cast<char*>(ptr));
return reinterpret_cast<T*>(ptr);
}
MPI_Comm ng2mpi(NG_MPI_Comm comm) {
static_assert(sizeof(MPI_Comm) <= sizeof(comm.value), "Size mismatch");
static_assert(alignof(MPI_Comm) <= alignof(NG_MPI_Comm), "Size mismatch");
return cast_ng2mpi<MPI_Comm>(comm.value);
}
MPI_Group ng2mpi(NG_MPI_Group group) {
static_assert(sizeof(MPI_Group) <= sizeof(group.value), "Size mismatch");
static_assert(alignof(MPI_Group) <= alignof(NG_MPI_Group), "Size mismatch");
return cast_ng2mpi<MPI_Group>(group.value);
}
MPI_Comm* ng2mpi(NG_MPI_Comm* comm) {
return cast_ng2mpi<MPI_Comm*>(&comm->value);
}
MPI_Group* ng2mpi(NG_MPI_Group* group) {
return cast_ng2mpi<MPI_Group*>(&group->value);
}
MPI_Datatype* ng2mpi(NG_MPI_Datatype* type) {
return cast_ng2mpi<MPI_Datatype*>(&type->value);
}
MPI_Datatype* ng2mpi(NG_MPI_Datatype* type, int count) {
return cast_ng2mpi<MPI_Datatype>(&type->value, count);
}
MPI_Request* ng2mpi(NG_MPI_Request* request) {
return cast_ng2mpi<MPI_Request*>(&request->value);
}
MPI_Request* ng2mpi(NG_MPI_Request* request, int count) {
return cast_ng2mpi<MPI_Request>(&request->value, count);
}
MPI_Status* ng2mpi(NG_MPI_Status* status) {
return reinterpret_cast<MPI_Status*>(status);
}
MPI_Aint* ng2mpi(NG_MPI_Aint* aint) {
return reinterpret_cast<MPI_Aint*>(aint);
}
MPI_Aint* ng2mpi(NG_MPI_Aint* aint, int count) {
return cast_ng2mpi<MPI_Aint>(aint, count);
}
MPI_Datatype ng2mpi(NG_MPI_Datatype type) {
static_assert(sizeof(MPI_Datatype) <= sizeof(type.value), "Size mismatch");
return cast_ng2mpi<MPI_Datatype>(type.value);
}
MPI_Request ng2mpi(NG_MPI_Request request) {
static_assert(sizeof(MPI_Request) <= sizeof(request.value), "Size mismatch");
return cast_ng2mpi<MPI_Request>(request.value);
}
MPI_Op ng2mpi(NG_MPI_Op op) {
static_assert(sizeof(MPI_Op) <= sizeof(op.value), "Size mismatch");
return cast_ng2mpi<MPI_Op>(op.value);
}
MPI_Aint ng2mpi(NG_MPI_Aint aint) {
static_assert(sizeof(MPI_Aint) <= sizeof(aint.value), "Size mismatch");
return cast_ng2mpi<MPI_Aint>(aint.value);
}
void* ng2mpi(void* ptr) { return ptr; }
char* ng2mpi(char* ptr) { return ptr; }
char*** ng2mpi(char*** ptr) { return ptr; }
int* ng2mpi(int* ptr) { return ptr; }
int ng2mpi(int value) { return value; }
} // namespace ngcore
using namespace ngcore;
extern "C" {
NGCORE_API_EXPORT void ng_init_mpi();
}
static bool imported_mpi4py = false;
void ng_init_mpi() {
#ifdef NG_PYTHON
NG_MPI_CommFromMPI4Py = [](py::handle src, NG_MPI_Comm& dst) -> bool {
if (!imported_mpi4py) {
import_mpi4py__MPI();
imported_mpi4py = true;
}
PyObject* py_src = src.ptr();
[[maybe_unused]] auto type = Py_TYPE(py_src);
if (PyObject_TypeCheck(py_src, &PyMPIComm_Type)) {
dst = mpi2ng(*PyMPIComm_Get(py_src));
return !PyErr_Occurred();
}
return false;
};
NG_MPI_CommToMPI4Py = [](NG_MPI_Comm src) -> py::handle {
if (!imported_mpi4py) {
import_mpi4py__MPI();
imported_mpi4py = true;
}
return py::handle(PyMPIComm_New(ng2mpi(src)));
};
#endif // NG_PYTHON
#include "ng_mpi_generated_init.hpp"
}
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