mirror of
https://github.com/pytorch/pytorch.git
synced 2025-10-23 23:04:52 +08:00
643ca5def2
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/30915 Since we now have C++14, we don't need these c10::guts helpers anymore ghstack-source-id: 95777609 Test Plan: waitforsandcastle Differential Revision: D18869639 fbshipit-source-id: 97716f932297c64c6e814410ac47b444c33d4e2e
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
#include <pybind11/pybind11.h>
|
|
#include <pybind11/stl.h>
|
|
|
|
#include "caffe2/mpi/mpi_common.h"
|
|
|
|
namespace caffe2 {
|
|
|
|
namespace py = pybind11;
|
|
|
|
PYBIND11_MODULE(mpi_utils, m) {
|
|
m.doc() = "MPI helper functions";
|
|
m.def(
|
|
"SetupPeers",
|
|
&MPISetupPeers,
|
|
py::arg("replicas"),
|
|
py::arg("role"),
|
|
py::arg("job_path"));
|
|
m.def("CommSize", [] {
|
|
auto comm = GlobalMPIComm();
|
|
return MPICommSize(comm);
|
|
});
|
|
m.def("CommRank", [] {
|
|
auto comm = GlobalMPIComm();
|
|
return MPICommRank(comm);
|
|
});
|
|
m.def("Finalize", [] {
|
|
// NOTE(pietern): Doesn't seem to work when calling it
|
|
// from Python. It ends up calling pthread_join on a
|
|
// thread that doesn't exit. For now, running mpirun
|
|
// with `-quiet` and skipping the finalize call.
|
|
MPI_Finalize();
|
|
});
|
|
m.def("Broadcast", [](py::bytes in) -> py::bytes {
|
|
std::string str = in;
|
|
auto comm = GlobalMPIComm();
|
|
auto length = str.length();
|
|
MPI_Bcast(&length, sizeof(length), MPI_CHAR, 0, comm);
|
|
auto ptr = std::make_unique<char[]>(length);
|
|
if (MPICommRank(comm) == 0) {
|
|
memcpy(ptr.get(), str.data(), str.length());
|
|
}
|
|
MPI_Bcast(ptr.get(), length, MPI_CHAR, 0, comm);
|
|
return std::string(ptr.get(), length);
|
|
});
|
|
}
|
|
|
|
} // namespace caffe2
|