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51 lines
2.6 KiB
Markdown
---
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title: Software repositories
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#tags:
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keywords: modules, software, stable, unstable, deprecated, spack, repository, repositories
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last_updated: 16 January 2024
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summary: "This page contains information about the different software repositories"
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sidebar: merlin7_sidebar
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permalink: /merlin7/software-repositories.html
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---
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## Module Systems in Merlin7
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Merlin7 provides a modular environment to ensure flexibility, compatibility, and optimized performance.
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The system supports three primary module types: PSI Environment Modules (PModules), Spack Modules, and Cray Environment Modules.
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### PSI Environment Modules (PModules)
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The PModules system, developed by PSI, is the officially supported module system on Merlin7. It is the preferred choice for accessing validated software across a wide range of applications.
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Key Features:
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* **Expert Deployment:** Each package is deployed and maintained by specific experts to ensure reliability and compatibility.
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* **Broad Availability:** Commonly used software, such as OpenMPI, ANSYS, MATLAB, and other, is provided within PModules.
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* **Custom Requests:** If a package, version, or feature is missing, users can contact the support team to explore feasibility for installation.
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For further information about <b>Pmodules</b> on Merlin7 please refer to the <b><a href="/merlin7/pmodules.html">PSI Modules</a></b> chapter.
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### Spack Modules
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Merlin7 also provides Spack modules, offering a modern and flexible package management system. Spack supports a wide variety of software packages and versions. For more information, refer to the **external [PSI Spack](https://gitea.psi.ch/HPCE/spack-psi) documentation**.
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For further information about <b>Spack</b> on Merlin7 please refer to the <b><a href="/merlin7/spack.html">Spack</a></b> chapter.
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### Cray Environment Modules
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Merlin7 also supports Cray Environment Modules, which include compilers, MPI implementations, and libraries optimized
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for Cray systems. However, Cray modules are not recommended as the default choice due to potential backward compatibility
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issues when the Cray Programming Environment (CPE) is upgraded to a newer version.
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Recommendations:
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* **Compiling Software:** Cray modules can be used when optimization for Cray hardware is essential.
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* **General Use:** For most applications, prefer PModules, which ensure stability, backward compatibility, and long-term support.
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For further information about <b>CPE</b> on Merlin7 please refer to the <b><a href="/merlin7/cray-module-env.html">Cray Modules</a></b> chapter.
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