Environment:

1. Framework: (PyTorch,)
2. Framework version:
3. Horovod version:
4. MPI version:
5. CUDA version:
6. NCCL version:
7. Python version:
8. Spark / PySpark version:
9. Ray version:
10. OS and version:
11. GCC version:
12. CMake version:

-- Configuring done
CMake Error in horovod/torch/CMakeLists.txt:
Target "pytorch" requires the language dialect "CXX14" , but CMake does not
know the compile flags to use to enable it.

-- Generating done
CMake Generate step failed. Build files cannot be regenerated correctly.
Traceback (most recent call last):
File "", line 1, in
File "/tmp/pip-install-3j8y4qov/horovod_155b0d6aeac74d1899be1b6ff9cb8742/setup.py", line 199, in
'horovodrun = horovod.runner.launch:run_commandline'
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/site-packages/setuptools/init.py", line 163, in setup
return distutils.core.setup(**attrs)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/core.py", line 148, in setup
dist.run_commands()
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/dist.py", line 966, in run_commands
self.run_command(cmd)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/dist.py", line 985, in run_command
cmd_obj.run()
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/site-packages/wheel/bdist_wheel.py", line 299, in run
self.run_command('build')
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/dist.py", line 985, in run_command
cmd_obj.run()
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/command/build.py", line 135, in run
self.run_command(cmd_name)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/dist.py", line 985, in run_command
cmd_obj.run()
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/site-packages/setuptools/command/build_ext.py", line 87, in run
_build_ext.run(self)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/distutils/command/build_ext.py", line 340, in run
self.build_extensions()
File "/tmp/pip-install-3j8y4qov/horovod_155b0d6aeac74d1899be1b6ff9cb8742/setup.py", line 95, in build_extensions
cwd=cmake_build_dir)
File "/home/xx/.conda/envs/dalle_test/lib/python3.7/subprocess.py", line 363, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '/tmp/pip-install-3j8y4qov/horovod_155b0d6aeac74d1899be1b6ff9cb8742', '-DCMAKE_BUILD_TYPE=RelWithDebInfo', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO=/tmp/pip-install-3j8y4qov/horovod_155b0d6aeac74d1899be1b6ff9cb8742/build/lib.linux-x86_64-3.7', '-DPYTHON_EXECUTABLE:FILEPATH=/home/xx/.conda/envs/dalle_test/bin/python3.7']' returned non-zero exit status 1.

ERROR: Failed building wheel for horovod