PyNumero Installation

PyNumero is a module within Pyomo. Therefore, Pyomo must be installed to use PyNumero. PyNumero also has some extensions that need built. There are many ways to build the PyNumero extensions. Common use cases are listed below. However, more information can always be found at and

Note that you will need a C++ compiler and CMake installed to build the PyNumero libraries.

Method 1

One way to build PyNumero extensions is with the pyomo download-extensions and build-extensions subcommands. Note that this approach will build PyNumero without support for the HSL linear solvers.

pyomo download-extensions
pyomo build-extensions

Method 2

If you want PyNumero support for the HSL solvers and you have an IPOPT compilation for your machine, you can build PyNumero using the build script

python -m -DBUILD_ASL=ON -DBUILD_MA27=ON -DIPOPT_DIR=<path/to/ipopt/build/>

Method 3

You can build the PyNumero libraries from source using cmake. This generally works best when building from a source distribution of Pyomo. Assuming that you are starting in the root of the Pyomo source distribution, you can follow the normal CMake build process

mkdir build
cd build
ccmake ../pyomo/contrib/pynumero/src
make install