Get Started

Tip

pressio-ops is header-only, so it does not need to be precompiled and linked to.

Warning

To use pressio-ops, you need at least a C++17 compiler.

Dependencies

Some parts contain code that are specific to third-party libraries (TPLs). Currently, the list of TPLs supported is shown below:

TPL Name

Optional/Required

Version Known to Work/run in CI

Eigen

Required

3.4.0

Trilinos

Optional

commits: 0dc4553, 5bbda25

MPI

Optional

–

Kokkos

Optional

4.4.01

BLAS

Optional

–

LAPACK

Optional

–

GoogleTest

Optional

1.14.0

Eigen is the only required dependency because it is needed by pressio-rom.

Macros

Enabling/disabling specific dependencies can be done via the following macros:

Variable

Description

Default

PRESSIO_ENABLE_TPL_EIGEN

self-explanatory

ON

PRESSIO_ENABLE_TPL_TRILINOS

self-explanatory

OFF

PRESSIO_ENABLE_TPL_MPI

self-explanatory

OFF but automatically ON if PRESSIO_ENABLE_TPL_TRILINOS=ON

PRESSIO_ENABLE_TPL_KOKKOS

self-explanatory

OFF but automatically ON if PRESSIO_ENABLE_TPL_TRILINOS=ON

Obviously, the choice of which TPLs to enable is related to your application’s dependency requirements. For example, if you have an application that relies on Trilinos data structures and want to use pressio-ops, then it makes sense to enable the Trilinos dependency. On the contrary, if you have an application that relies only on Eigen data structures, then it makes sense to only leave only Eigen on and disable the rest.

Note that some of the macros listed above are related. For example, if we enable Trilinos then pressio-ops automatically enables also Kokkos, BLAS, LAPACK and MPI.

Building tests

If you are interested in building the tests, look for example at: