For molecular modelers, managing computational resources can be a significant challenge, especially when dealing with large systems or extended simulation times. The GROMACS Wizard in SAMSON offers a powerful solution by enabling users to run molecular dynamics simulations in the Cloud. In a few straightforward steps, you can utilize the cloud for NVT Equilibration, NPT Equilibration, or Production Molecular Dynamics Simulation. This guide walks you through the process and highlights how it can simplify your workflow.
Why Use Cloud Computing for Simulations?
Running local simulations can be constrained by hardware limitations such as memory, processing capacity, or GPU availability. Cloud computing eliminates these barriers, offering scalability, flexibility, and speed to cater to even the largest models. Additionally, by leveraging the Cloud, you free up your local system for other tasks while your simulations progress independently.
Getting Started with GROMACS Wizard Cloud Simulations
The first step is to ensure your SAMSON Connect account has at least one computing credit. You can verify your credits through either the Job manager in SAMSON or the My account page in SAMSON Connect. If necessary, credits can be purchased here.
Once ready, follow these steps:
1. Prepare Your System
Before launching a simulation in the Cloud, ensure all input structures and parameters are correctly specified. It is recommended to test your setup locally for a few steps to identify any potential issues. If local testing is not possible, you can use the Generate inputs function to validate the system.
2. Select the Machine Type
Click the Equilibrate in the cloud or Simulate in the cloud button, depending on your simulation phase. A dialog will allow you to choose the machine type, storage size, and view costs. For testing, the recommended configuration includes 4 vCPUs and no GPU, which is cost-efficient. Click OK to proceed once a machine is selected.
3. Confirm and Monitor the Job
After choosing the machine, a security dialog will ask you to confirm the launch. It provides job details, including pricing and current computing credits, ensuring transparency. Once confirmed, the Job manager will open to display the progress of your initialization and subsequent simulation phases.
Jobs can be paused or canceled from the Job manager at any stage. You can also perform other tasks or close SAMSON while the simulation runs in the background, as all job details are stored in the SAMSON Connect Cloud Service.
4. Access and Download Simulation Results
Once the job is completed, you will receive an email notification and an entry in Home > News within SAMSON. Results can then be downloaded via the Job manager. Simply right-click on the job, select Open result window, and download your files.
It is recommended to download all files for preparation or analysis of subsequent steps. Once results are downloaded and no longer needed in the Cloud, delete the job to avoid accumulating storage costs.
Key Benefits
- Run simulations without hardware constraints.
- Save local computing resources for other tasks.
- Pay only for machine and storage usage, with free file transfer.
Whether you’re a beginner or an expert, GROMACS Wizard’s cloud computing feature minimizes barriers and optimizes efficiency.
To learn more, refer to the official documentation at https://documentation.samson-connect.net/tutorials/gromacs-wizard/cloud/.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can get SAMSON at https://www.samson-connect.net.