Ecole on Colab not imported #244

Lessvn · 2021-09-14T16:28:21Z

Lessvn
Sep 14, 2021

Hi,

I followed the following steps to install ecole in Colab:

! wget https://repo.anaconda.com/miniconda/Miniconda3-py37_4.8.2-Linux-x86_64.sh
! chmod +x Miniconda3-py37_4.8.2-Linux-x86_64.sh
! bash ./Miniconda3-py37_4.8.2-Linux-x86_64.sh -b -f -p /usr/local
import sys
sys.path.append('/usr/local/lib/python3.7/site-packages/')

!conda update -n base conda
!conda config --add channels conda-forge
!conda config --set channel_priority strict
!conda install -c conda-forge ecole

After the installation was complete I tried to import ecole but it failed! I am not sure why should this happen as with !pip list command I see that ecole is already in the list of installed packaged, as you can see below

Package                Version
---------------------- ---------
brotlipy               0.7.0
certifi                2021.5.30
cffi                   1.14.6
chardet                4.0.0
charset-normalizer     2.0.0
colorama               0.4.4
conda                  4.10.3
conda-package-handling 1.7.3
cryptography           3.4.7
ecole                  0.7.3
idna                   3.1
numpy                  1.21.2
pip                    21.2.4
pycosat                0.6.3
pycparser              2.20
pyOpenSSL              20.0.1
PySocks                1.7.1
requests               2.26.0
ruamel-yaml-conda      0.15.80
setuptools             58.0.4
six                    1.16.0
tqdm                   4.62.2
urllib3                1.26.6
wheel                  0.37.0

This is my !conda info output:

active environment : None
       user config file : /root/.condarc
 populated config files : /root/.condarc
          conda version : 4.10.3
    conda-build version : not installed
         python version : 3.7.10.final.0
       virtual packages : __linux=5.4.104=0
                          __glibc=2.27=0
                          __unix=0=0
                          __archspec=1=x86_64
       base environment : /usr/local  (writable)
      conda av data dir : /usr/local/etc/conda
  conda av metadata url : None
           channel URLs : https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /usr/local/pkgs
                          /root/.conda/pkgs
       envs directories : /usr/local/envs
                          /root/.conda/envs
               platform : linux-64
             user-agent : conda/4.10.3 requests/2.26.0 CPython/3.7.10 Linux/5.4.104+ ubuntu/18.04.5 glibc/2.27
                UID:GID : 0:0
             netrc file : None
           offline mode : False

Any idea how I can solve this issue? Thanks!

Answered by AntoinePrv

Sep 17, 2021

You could try installing (and compiling) Ecole through pip. There are few steps because you need to provide a SCIP installation and Ecole uses some quite modern features, but I got something like the following working.

1. Install Ecole

# Install SCIP
! apt-get update
! apt-get install libgmp3-dev
! wget --no-verbose https://scipopt.org/download/release/scipoptsuite-7.0.3.tgz
! tar -xzf scipoptsuite-7.0.3.tgz
! mkdir build
! cd build && cmake -S ../scipoptsuite-7.0.3 \
  -DCMAKE_BUILD_TYPE=Release \
  -DPARASCIP=ON \
  -DPAPILO=ON \
  -DGCG=OFF \
  -DZIMPL=OFF \
  -DBOOST=OFF \
  -DIPOPT=OFF
! cd build && make && make install

# Upgrade compiler, CMake and NumPy for Ecole
! add-apt-reposit…

View full answer

AntoinePrv · 2021-09-14T18:44:42Z

AntoinePrv
Sep 14, 2021
Maintainer

Hi @Lessvn
Can you show us your Python version and path of the interpreter you are running?

import sys
print(sys.executable)
print(sys.version)

8 replies

Lessvn Sep 16, 2021
Author

Sorry, just checking ... if you have any suggestion on how to solve this issue?

AntoinePrv Sep 17, 2021
Maintainer

Can you try ! pip show ecole

Lessvn Sep 17, 2021
Author

I tried that and got this:

Name: ecole
Version: 0.7.3
Summary: Extensible Combinatorial Optimization Learning Environments
Home-page: https://www.ecole.ai
Author: Antoine Prouvost et al.
Author-email: 
License: BSD-3-Clause
Location: /usr/local/lib/python3.7/site-packages
Requires: numpy
Required-by:

I set the system path to: /usr/local/lib/python3.7/site-packages. Now, when want to import I get this error:

ImportError                               Traceback (most recent call last)

<ipython-input-20-4039d98168f3> in <module>()
----> 1 import ecole

/usr/local/lib/python3.7/site-packages/ecole/__init__.py in <module>()
      1 import sys
      2 
----> 3 from ecole.core import RandomEngine, seed, spawn_random_engine, Exception
      4 
      5 import ecole.version

ImportError: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by /usr/local/lib/python3.7/site-packages/ecole/core.cpython-37m-x86_64-linux-gnu.so)

AntoinePrv Sep 17, 2021
Maintainer

I see, it's not easy... I'm trying to figure out an install. Might take a few days.

Lessvn Sep 17, 2021
Author

Sure, I can wait. I appreciate that :)

AntoinePrv · 2021-09-17T20:23:26Z

AntoinePrv
Sep 17, 2021
Maintainer

You could try installing (and compiling) Ecole through pip. There are few steps because you need to provide a SCIP installation and Ecole uses some quite modern features, but I got something like the following working.

1. Install Ecole

# Install SCIP
! apt-get update
! apt-get install libgmp3-dev
! wget --no-verbose https://scipopt.org/download/release/scipoptsuite-7.0.3.tgz
! tar -xzf scipoptsuite-7.0.3.tgz
! mkdir build
! cd build && cmake -S ../scipoptsuite-7.0.3 \
  -DCMAKE_BUILD_TYPE=Release \
  -DPARASCIP=ON \
  -DPAPILO=ON \
  -DGCG=OFF \
  -DZIMPL=OFF \
  -DBOOST=OFF \
  -DIPOPT=OFF
! cd build && make && make install

# Upgrade compiler, CMake and NumPy for Ecole
! add-apt-repository --yes ppa:ubuntu-toolchain-r/test
! apt-get update
! apt-get install gcc-9 g++-9
! update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 60 --slave /usr/bin/g++ g++ /usr/bin/g++-9
! python -m pip install --upgrade cmake>=3.15 numpy

# Install ecole
! export CXXFLAGS="-static-libstdc++" && python -m pip install ecole

2. Restart runtime

In the bar, click Runtime > Restart Runtime

4 replies

Lessvn Sep 17, 2021
Author

@AntoinePrv
It worked. Thank you for the speedy help!

Lessvn Sep 17, 2021
Author

Now with import SCIP I get:

ModuleNotFoundError: No module named 'SCIP'

Am I missing something?
Sorry for keep bugging!

AntoinePrv Sep 18, 2021
Maintainer

I don't know of any module named scip. What package are you trying to use?
There is often import pyscipopt.scip as scip. Alternatively there is an ecole.scip but I don't think this is what you're looking for.

peirisi Feb 2, 2023

After running 1. Install Ecole this come out:

Reading package lists... Done
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:3 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:4 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu focal InRelease
Hit:5 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:6 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ InRelease
Hit:7 http://ppa.launchpad.net/cran/libgit2/ubuntu focal InRelease
Hit:8 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal InRelease
Hit:9 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu focal InRelease
Hit:10 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu focal InRelease
Ign:11 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu2004/x86_64  InRelease
Hit:12 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64  InRelease
Hit:13 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu2004/x86_64  Release
Reading package lists... Done
Reading package lists... Done
Building dependency tree       
Reading state information... Done
g++-9 is already the newest version (9.4.0-1ubuntu1~20.04.1).
g++-9 set to manually installed.
gcc-9 is already the newest version (9.4.0-1ubuntu1~20.04.1).
gcc-9 set to manually installed.
The following package was automatically installed and is no longer required:
  libnvidia-common-510
Use 'apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 41 not upgraded.
update-alternatives: using /usr/bin/gcc-9 to provide /usr/bin/gcc (gcc) in auto mode
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
scipy 1.7.3 requires numpy<1.23.0,>=1.16.5, but you have numpy 1.24.1 which is incompatible.
numba 0.56.4 requires numpy<1.24,>=1.18, but you have numpy 1.24.1 which is incompatible.
Looking in indexes: https://pypi.org/simple, https://us-python.pkg.dev/colab-wheels/public/simple/
Collecting ecole
  Downloading ecole-0.8.1.tar.gz (380 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 380.4/380.4 KB 8.1 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: numpy>=1.4 in /usr/local/lib/python3.8/dist-packages (from ecole) (1.24.1)
Building wheels for collected packages: ecole
  error: subprocess-exited-with-error
  
  × Building wheel for ecole (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> See above for output.
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  Building wheel for ecole (pyproject.toml) ... error
  ERROR: Failed building wheel for ecole
Failed to build ecole
ERROR: Could not build wheels for ecole, which is required to install pyproject.toml-based projects

It seems not working now

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Select a reply

Ecole on Colab not imported #244

Lessvn Sep 14, 2021

1. Install Ecole

Replies: 2 comments · 12 replies

AntoinePrv Sep 14, 2021 Maintainer

Lessvn Sep 16, 2021 Author

AntoinePrv Sep 17, 2021 Maintainer

Lessvn Sep 17, 2021 Author

AntoinePrv Sep 17, 2021 Maintainer

Lessvn Sep 17, 2021 Author

AntoinePrv Sep 17, 2021 Maintainer

1. Install Ecole

2. Restart runtime

Lessvn Sep 17, 2021 Author

Lessvn Sep 17, 2021 Author

AntoinePrv Sep 18, 2021 Maintainer

peirisi Feb 2, 2023

Lessvn
Sep 14, 2021

Replies: 2 comments 12 replies

AntoinePrv
Sep 14, 2021
Maintainer

Lessvn Sep 16, 2021
Author

AntoinePrv Sep 17, 2021
Maintainer

Lessvn Sep 17, 2021
Author

AntoinePrv Sep 17, 2021
Maintainer

Lessvn Sep 17, 2021
Author

AntoinePrv
Sep 17, 2021
Maintainer

Lessvn Sep 17, 2021
Author

Lessvn Sep 17, 2021
Author

AntoinePrv Sep 18, 2021
Maintainer