https://eliehammou.com/tag/qcd/QCDWowchemy (https://wowchemy.com)en-usMon, 06 Oct 2025 00:00:00 +0000https://eliehammou.com/media/icon_hu24bedb3e528ff76cb632a1f32ff69754_156397_512x512_fill_lanczos_center_3.pnghttps://eliehammou.com/tag/qcd/https://eliehammou.com/software_development/colibri/Mon, 06 Oct 2025 00:00:00 +0000https://eliehammou.com/software_development/colibri/<p>Colibri is a <a href="https://github.com/NNPDF/reportengine" target="_blank" rel="noopener">reportengine</a> application designed to perform Parton Distribution Function (PDF) fits using arbitrary parametrisations. It provides a flexible and adaptable open-source platform for PDF fitting.</p> <p><strong>Key Features:</strong></p> <ul> <li>Perform PDF fits using flexible parametrisations</li> <li>Support for JAX-based computations (CPU by default)</li> <li>Optional GPU (CUDA) support for accelerated JAX operations</li> <li>Command-line scripts for common workflows (<code>colibri</code>, <code>evolve_fit</code>, etc.)</li> <li>Integration with external PDF model repositories</li> </ul> <p>Colibri is part of the <a href="https://www.pbsp.org.uk/" target="_blank" rel="noopener">PBSP</a> project and is built to work with the NNPDF framework.</p> <p><strong>Installation:</strong></p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl"><span class="c1"># Via conda</span> </span></span><span class="line"><span class="cl">conda env create -f environment.yml </span></span><span class="line"><span class="cl"> </span></span><span class="line"><span class="cl"><span class="c1"># Or via pip</span> </span></span><span class="line"><span class="cl">pip install git+https://github.com/HEP-PBSP/colibri.git </span></span></code></pre></div><p><strong>Citation guidelines:</strong> Please cite NNPDF (Eur. Phys. J. C 81 (2021) 958) and reportengine when using this code.</p> <p><strong>Languages:</strong> Python (97.5%), TeX (1.9%)</p> <p><strong>License:</strong> GPL-3.0</p>