ZFP
===

.. toctree::
   :maxdepth: 1
   :caption: Contents:

About
-----

`ZFP`_ is a compressed format for representing multidimensional floating-point and integer arrays.

Supported versions
------------------

To check which zfp versions and build types are currently supported on Discoverer, execute on the login node:

.. code-block:: bash

 module avail zfp

The recipe followed to build the source code is available at:

https://gitlab.discoverer.bg/vkolev/recipes/-/tree/main/zfp

Loading/Compiler affinity
-------------------------

Each version of zfp installed in the public software repository is built against five compiler sets: (i) :doc:`llvm`, (ii) :doc:`oneapi`, (iii) :doc:`nvidia_hpc_sdk`, (iv) :doc:`aocc`, (v) :doc:`gcc`. The name of the environmental module contains the name of the compiler set employed for compiling the zfp source code.

.. note:: If the application code requires the ZFP Fortran module (``zfp.mod``), you must load the ZFP installation that match the Fortran compiler type. For instance, if you rely on ``ifort`` or ``ifx`` to compile your application code, you have to load the Intel oneAPI build of ZFP. That speicifc dependency applies to the use of NVIDIA HPC SDK ``nvfortran`` or LLVM's ``flang`` (or ``flang-new``). If no Fortran compiler is involved and only linking to the ZFP library is the goal, you may always rely on the LLVM build.

Intel oneAPI
............

.. code-block:: bash

 module avail zfp/*/*intel

NVIDIA HPC SDK
..............

.. code-block:: bash

 module avail zfp/*/*nvidia

LLVM (recommended for linking)
..............................

.. code-block:: bash

 module avail zfp/*/*llvm

AOCC
....

.. code-block:: bash

 module avail zfp/*/*aocc

GCC
...

.. code-block:: bash

 module avail zfp/*/*gcc

Getting help
------------

See :doc:`help`

.. _`ZFP`: https://github.com/LLNL/zfp