A Python wrapper to the CUTEst optimization test environment
Project description
PyCUTEst is a Python interface to CUTEst, a Fortran package for testing optimization software. It is based on the interface originally developed for CUTEr by Prof. Arpad Buermen.
Full details on how to use PyCUTEst are available in the documentation.
Requirements
PyCUTEst requires the following software to be installed:
Python 2.7 or Python 3 (http://www.python.org/)
CUTEst (see below)
Additionally, the following python packages should be installed (these will be installed automatically if using pip, see Installing PyCUTEst using pip):
NumPy 1.11 or higher (http://www.numpy.org/)
SciPy 0.18 or higher (http://www.scipy.org/)
Please Note: Currently PyCUTEst only supports Mac and Linux. For Windows 10 (or later), PyCUTEst can be used through the Windows Subsystem for Linux, following the Linux installation instructions.
Installing CUTEst on Linux
These instructions do not include installation of the MATLAB interface. You will need to install four packages: archdefs, SIFDecode, CUTEst and MASTSIF. To keep things simple, install all four packages in the same directory:
$ mkdir cutest $ cd cutest $ git clone https://github.com/ralna/ARCHDefs ./archdefs $ git clone https://github.com/ralna/SIFDecode ./sifdecode $ git clone https://github.com/ralna/CUTEst ./cutest $ git clone https://bitbucket.org/optrove/sif ./mastsif
Note that mastsif
contains all the test problem definitions and
is therefore quite large. If you’re short on space you may want to copy
only the *.SIF files for the problems you wish to test on.
Next set the following environment variables in your ~/.bashrc
to point to the installation directories used above:
# CUTEst export ARCHDEFS=/path/to/cutest/archdefs/ export SIFDECODE=/path/to/cutest/sifdecode/ export MASTSIF=/path/to/cutest/mastsif/ export CUTEST=/path/to/cutest/cutest/ export MYARCH="pc64.lnx.gfo"
Now we are ready to install CUTEst in double precision (requires gfortran
and gcc
):
$ cd /path/to/cutest/cutest/ $ ${ARCHDEFS}/install_optrove Do you wish to install CUTEst (Y/n)? Y Do you require the CUTEst-Matlab interface (y/N)? N Select platform: 6 # PC with generic 64-bit processor Select operating system: 3 # Linux Would you like to review and modify the system commands (y/N)? N Select fortran compiler: 6 # GNU gfortran compiler Would you like to review and modify the fortran compiler settings (y/N)? N Select C compiler: 8 # GCC Would you like to review and modify the C compiler settings (y/N)? N Would you like to compile SIFDecode (Y/n)? Y Would you like to compile CUTEst (Y/n)? Y CUTEst may be compiled in (S)ingle or (D)ouble precision or (B)oth. Which precision do you require for the installed subset (D/s/b) ? D
And CUTEst should run from here. To test that the installation works, issue the commands:
$ cd $SIFDECODE/src ; make -f $SIFDECODE/makefiles/$MYARCH test $ cd $CUTEST/src ; make -f $CUTEST/makefiles/$MYARCH test
Please Note: currently PyCUTEst only supports gfortran and uses the default version on your path (as returned by gfortran -v
). Please ensure this is the same version that you install CUTEst with above otherwise you may experience segmentation faults, this should be the case if you select the generic GNU gfortran compiler
as the fortran compiler in the installer above.
Installing CUTEst on Mac
Install CUTEst using Homebrew as detailed below (installing CUTEst manually on Mac is not supported). First it is important to ensure that you have the latest version of Xcode Command Line Tools installed (or the latest version of Xcode), please ensure this is the case by following this guide. Now install the Homebrew package manager:
$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Then you can easily install CUTEst:
$ brew tap optimizers/cutest $ brew install cutest --without-single --with-matlab # if using Matlab interface $ brew install mastsif # if you want all the test problems $ for f in "archdefs" "mastsif" "sifdecode" "cutest"; do \ $ echo ". $(brew --prefix $f)/$f.bashrc" >> ~/.bashrc; \ $ done
Please Note: you may see warnings such as ld: warning: object file (RANGE.o) was built for newer macOS version (11.5) than being linked (10.15)
when using PyCUTEst on Mac, to suppress these warnings please set the environment variable MACOSX_DEPLOYMENT_TARGET
to your current macOS version (e.g. export MACOSX_DEPLOYMENT_TARGET=11.5
in this example, you can make this permanent by adding it your ~/.bashrc
file).
Installing PyCUTEst using pip
For easy installation, use pip:
$ pip install pycutest
Note that if an older install of PyCUTEst is present on your system you can use:
$ pip install --upgrade pycutest
to upgrade PyCUTEst to the latest version.
You will then need to create a folder which will store all your compiled problems:
$ mkdir pycutest_cache
And set an environment variable to tell PyCUTEst about this directory, by adding to your ~/.bashrc
file:
export PYCUTEST_CACHE="/path/to/pycutest_cache"
If you do not set this environment variable, then PyCUTEst will create a cache folder of compiled problems inside your current working directory.
Manual installation of PyCUTEst
Alternatively, you can download the source code from Github and unpack as follows:
$ git clone https://github.com/jfowkes/pycutest $ cd pycutest
PyCUTEst is written in pure Python and requires no compilation. It can be installed using:
$ pip install .
Please Note: don’t forget to set up your cache and associated environment variable (see above).
To upgrade PyCUTEst to the latest version, navigate to the top-level directory (i.e. the one containing setup.py
) and re-run the installation using pip
, as above:
$ git pull $ pip install .
Testing
The documentation provides some simple examples of how to run PyCUTEst.
Uninstallation
You can uninstall PyCUTEst as follows:
$ pip uninstall pycutest
Bugs
Please report any bugs using GitHub’s issue tracker.
License
This package is released under the GNU GPL license.
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