BioExcel Webinar: Maize – Computational chemistry workflows with cycles and conditions

BioExcel, the leading European Centre of Excellence for computational biomolecular research, aims to support Life Science academic and industrial researchers in the effective use of HPC biomolecular software and continues BioExcel’s webinar series with its top experts in biomolecular modelling and simulations tools. Welcome!

Webinar: Maize – Computational chemistry workflows with cycles and conditions

Date: September 5, 2023
Time: 15:00 CEST (Central European Summer Time) UTC/GMT + 2h
  16:00 EEST (Eastern European Summer Time) UTC/GMT + 3 h
  Please do not forget to take into consideration the different time zones of joining the webinar!
Duration: 1 hour
Tool: ZOOM (install the latest Zoom application before the webinar via


Many computational scientific workflows can be expressed as graphs. This abstraction is useful to modularize and reuse existing components, as well as provide parallelization and ease reproducibility. Existing tools represent the computation as a directed acyclic graph (DAG), thus allowing efficient execution by parallelization of concurrent branches. These systems can however generally not express cyclic and conditional workflows, i.e., control flow. We therefore developed Maize, a workflow manager for cyclic and conditional graphs based on the principles of flow-based programming. By running each node of the graph concurrently in separate processes and allowing communication at any time through dedicated inter-node channels, arbitrary graph structures can be executed. In this webinar, I will give an introduction to Maize and demonstrate solutions to common problems in computational chemistry and early-stage drug discovery projects, such as de-novo small molecule generation, docking, and their combination in an active learning pipeline.


  • Thomas Löhr (AstraZeneca)