Storage for PReSTO pilot SNIC 2022/5-414
Title: Storage for PReSTO pilot SNIC 2022/5-414
DNr: SNIC 2022/6-342
Project Type: SNIC Medium Storage
Principal Investigator: Martin Moche <>
Affiliation: Karolinska Institutet
Duration: 2023-01-01 – 2024-01-01
Classification: 10601 20908 20906


In 2013, Protein Science Facility from Karolinska Institutet and National Supercomputer Centre (NSC) started a pilot project to evaluate Macromolecular X-ray crystallography applications performance at NSC Triolith. In 2015, the Swedish light source MAX IV decided to fund an extension called PReSTO for integrated structural biology calculations and in 2018, the Swedish Research Council granted funds to this project (dnr. 2018-06479) Members of this project have access to the PReSTO installation via Swedish National Infrastructure of Computing (SNIC) and may have additional complementary SNIC compute and storage allocations. Thinlinc software from Cendio supports the structural biology workflow by enabling remote graphic applications such as coot/chimera/ccp4mg/pymol for interactive model building and visualization of protein structure and surface properties. Since 2017, we use easybuild when installing PReSTO with several advantages to a standard HPC installation such as A) software environments can be sent to compute nodes B) software build and runtime dependencies are made explicit in easyconfigs and easyblocks C) the version-controlled software stack can be moved into new hardware with minor effort. PReSTO is now available at NSC Tetralith, LUNARC Aurora, the MAX IV online and offline clusters and the NSC local resource Berzelius since 2022. The PReSTO homepage is designed for newcomers pointing towards software developer manuals, default option batch scripts and slurm configurations for certain graphical user interfaces. We also developed a PReSTO menu that enable users to A) launch software at login or compute nodes where appropriate B) select compute node time and core number C) select output directory for some software such as hkl2map. Code optimizations are made to adapt the forkxds script of popular XDS package to slurm and CryoSPARC to run at HPC resources. In 2020, MAX IV developed a fragment screening web application on top of the stable PReSTO installation (1) and PReSTO were acknowledged for making Serial X-ray crystallography software available to Swedish researchers (2) doing time resolved diffraction experiments using X-ray Free Electron Lasers (XFEL). In 2023, we will make PReSTO available at LUNARC Cosmos and hopefully contribute to more structural biology courses pioneered in 2022. The collaboration between SNIC, MAX IV and SciLifeLab staff is key to project progress. Swedish researchers with X-ray diffraction data can request MX-PReSTO training remote or in person by contacting project PI. Training in use of cryo-EM or NMR software requires further assistance from these branches of Swedish structural biology. We added instructions to include grant numbers when acknowledging SNIC and PReSTO on our homepage. 1. G. M. A. Lima et al., FragMAXapp: crystallographic fragment-screening data-analysis and project-management system. Acta Crystallogr D Struct Biol 77, 799-808 (2021). 2. V. Srinivas et al., High-Resolution XFEL Structure of the Soluble Methane Monooxygenase Hydroxylase Complex with its Regulatory Component at Ambient Temperature in Two Oxidation States. Journal of the American Chemical Society 142, 14249-14266 (2020).