Software requirements

Operating system

Recommended operating system is Red Hat Enterprise Linux (RHEL) / Rocky Linux versions 8 or 9. For these operating systems we provide RPMs with pre-built binaries to simplify deployment. On an experimental basis we also build repositories for Ubuntu 22.04 and 24.04.

Running Jungfraujoch on Red Hat Enterprise Linux 7 is currently not tested and not recommended, but likely possible by providing some packages from external repositories.

Two programs additionally run on Windows 11: the desktop viewer jfjoch_viewer, shipped as a pre-built installer, and rugnux, the offline analysis CLI, shipped as a .zip. Both can be built from source with Visual Studio 2026 (MSVC) and CUDA 13.3 — the viewer additionally needs Qt 6.11; see jfjoch_viewer ▸ Building from source on Windows. The Windows artefacts bundle the Qt runtime (viewer only) and, on the CUDA builds, the cuFFT DLL, so end users need neither Qt nor a CUDA toolkit installed — only an NVIDIA GPU driver for the GPU path. On Linux the portable archives link CUDA entirely statically and so need nothing but the driver. rugnux is also built for 64-bit Arm Linux (GH200, DGX Spark). The rest of Jungfraujoch is Linux-only and x86-64-only. See Release contents for the CPU baseline and CUDA requirements of each released package.

Software dependencies

Required:

  • C++20 compiler and C++20 standard library; recommended GCC 11+ or clang 14+ (Intel OneAPI and AMD AOCC also work)

  • CMake version 3.26 or newer + a build tool (GNU make or Ninja)

HDF5, libtiff, libjpeg-turbo, zlib and Eigen used to be required system packages; they are now downloaded and built automatically by CMake (see the note below), so none of them needs to be installed. Beyond the optional dependencies listed below, no third-party library has to be provided by the host any more.

Optional:

  • CUDA compiler version 12.8 or newer - required for the MX fast feedback indexer and GPU analysis

  • FFTW library - for indexing if GPU/CUDA is absent (also auto-downloaded by CMake)

  • Node.js - to build the frontend

  • Qt version 6 (for jfjoch_viewer)

  • OpenSSL 3.0 or newer - required to build jfjoch_viewer on Linux, where the fetched libcurl uses it for TLS; a build on OpenSSL 1.1 fails in libcurl

Many further dependencies (spdlog, Zstandard, HDF5, slsDetectorPackage, libzmq, libtiff, libjpeg-turbo, Ceres, the fast feedback indexer, Catch2, …) are downloaded automatically by CMake and statically linked; building therefore requires network access on the first configure. zlib (as zlib-ng in its zlib-compatible mode) and Eigen are among them: a copy already on the machine is used instead if the configure is given -DZLIB_ROOT=<prefix> or -DEigen3_DIR=<dir>. Others are vendored directly in the source tree. The complete list of third-party components, with copyright holders, licenses and verbatim license texts, is in Third-party software notices and the licenses/ directory.