software dependence error

[blueardour]

hi, @ycszen

Sorry to disturb you. This project is so attractive that I want to re-produce the result with it. However, when I tried to run train.py in TorchSeg/model/dfn/voc.dfn.R101_v1c. It gave several warnings and errors. They were the software dependence issues. This I wonder if you could share your software version in your environment.

My is: centos7.5 + python3.6.8 + pytorch1.0 + cuda9.0 + gcc-4.9.4.

Error message:

`
/home/cat/.pyenv/versions/3.6.8/lib/python3.6/site-packages/torch/utils/cpp_extension.py:166: UserWarning:

                           !! WARNING !!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Your compiler (c++) is not compatible with the compiler Pytorch was
built with for this platform, which is g++ on linux. Please
use g++ to to compile your extension. Alternatively, you may
compile PyTorch from source using c++, and then you can also use
c++ to compile your extension.

See https://github.com/pytorch/pytorch/blob/master/CONTRIBUTING.md for help
with compiling PyTorch from source.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

platform=sys.platform))
Traceback (most recent call last):
File "train.py", line 24, in
from apex.parallel import DistributedDataParallel, SyncBatchNorm
ModuleNotFoundError: No module named 'apex'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "train.py", line 27, in
"Please install apex from https://www.github.com/nvidia/apex .")
ImportError: Please install apex from https://www.github.com/nvidia/apex .

`

When I tried to install apex by pip install apex, it gave
In file included from /home/chenp/.pyenv/versions/3.6.8/include/python3.6m/Python.h:39:0, from cryptacular/bcrypt/_bcrypt.c:26: crypt_blowfish-1.2/crypt.h:17:23: fatal error: gnu-crypt.h: No such file or directory #include <gnu-crypt.h> ^ compilation terminated. error: command 'gcc' failed with exit status 1

[ycszen]

Hi, my software environments are as follows:

Ubuntu 16.04
PyTorch 1.0
Python 3.5.2
Cuda 9.0
GCC 5.4.0

According to my experimence, the warning you showed is normal. Then you should install the apex to use the multi-process-sync-bn.

[daodaofr]

hi, @ycszen.
I got a similar issue, when I run "python train.py -d 0-2", it gives a segmentation fault.
Do you have any idea ?

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

                          !! WARNING !!

platform=sys.platform))
/home/daodao/anaconda3/lib/python3.6/site-packages/torch/utils/cpp_extension.py:166: UserWarning:

                           !! WARNING !!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Your compiler (c++) is not compatible with the compiler Pytorch was
built with for this platform, which is g++ on linux. Please
use g++ to to compile your extension. Alternatively, you may
compile PyTorch from source using c++, and then you can also use
c++ to compile your extension.

See https://github.com/pytorch/pytorch/blob/master/CONTRIBUTING.md for help
with compiling PyTorch from source.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

                          !! WARNING !!

platform=sys.platform))
13 10:32:26 PyTorch Version 1.0.0, Furnace Version 0.1.1
13 10:32:26 using devices 0, 1, 2
[00:00<?,?it/s]Segmentation fault (core dumped)

[blueardour]

thanks very much @ycszen
I have successfully run the script.

[Mr-doooog]

@daodaofr Did you solve this question? I meet the same one

[daodaofr]

@Mr-doooog I was using the wrong labels (*_color.png), you need to use *_labelledIds.png.