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GPU CUDA Guide
The EDEM CUDA GPU module uses the latest General Purpose Computing on Graphical Processing Units (GPU) technology.
Run GPU from the Command Line
To run EDEM GPU from the command line, specify the simulator engine with the flag “-E” followed by the corresponding engine number.

Welcome
About EDEM
EDEM is a high-performance simulation software for bulk and granular materials.
What's New
New features and enhancements available in EDEM.
Release Notes
This section contains information about the EDEM release, such as key features, enhancements, bug fixes, and known issues.
Tutorials
Start using EDEM functionality with our interactive tutorials.
Get Started with EDEM
The EDEM user interface comprises three icons for each simulation component - Creator, Simulator, and Analyst.
EDEM Creator
EDEM Creator is the pre-processor for creating an EDEM simulation model, including setting up equipment and defining the generation of bulk materials.
EDEM Simulator
EDEM Simulator is a powerful solver used for fast and efficient simulations.
EDEM Analyst
EDEM Analyst is the post-processor used to analyze and visualize the results of your simulation.
EDEM Contact Models
A Contact Model describes how elements behave when they come into contact with each other.
EDEM Cal Utility
EDEM Cal is a utility which works with EDEM and is designed to assist in performing calibration.
GPU CUDA Guide
The EDEM CUDA GPU module uses the latest General Purpose Computing on Graphical Processing Units (GPU) technology.
- Set up Hardware
  This section describes the tests necessary to run EDEM CUDA GPU such as GPU Device and Connectivity tests.
- Set GPU CUDA Simulator Parameters
  The EDEM GPU CUDA solver engine will automatically allocate the required memory and resources as the simulation runs.
- Run GPU from the Command Line
  To run EDEM GPU from the command line, specify the simulator engine with the flag “-E” followed by the corresponding engine number.
- GPU CUDA Known Issues and Limitations
  The EDEM 2022.3 GPU CUDA Solver Engine contains the following known issues.
- GPU CUDA Troubleshooting
  The following tips may help resolve any issues while using the EDEM GPU Solver Engine.
- GPU CUDA API Guide
  CUDA requires that all functions be declared according to where they are going to be called and executed.
Programming Guide
The EDEM Programming Guide describes the EDEM API.
Coupling Interface Programming Guide
The Coupling Interface Programming Guide provides an overview of how to use the EDEM Coupling Interface to couple with a generic CFD code and/or Multi Body dynamics codes.
EDEMpy
EDEMpy is a Python library for accessing EDEM data from .h5 files (the underlying EDEM file format). EDEMpy does not require prior knowledge of advanced programming.
EDEM Solver Capabilities
EDEM contains four solver engines.
Appendix
This section provides additional information about how to estimate simulation time, supported EDEM File types, attribute definitions, and so on.
EDEM Terminology
Definitions of terms used in EDEM.
References and Bibliography
This section cites the contributions made by various authors and sources that have been used as reference material for EDEM, and the specifics of how they have been applied can be found in the individual contact model sections.

Run GPU from the Command Line

To run EDEM GPU from the command line, specify the simulator engine with the flag “-E” followed by the corresponding engine number.

To run GPU Command line:

Specify the flag by using the following options:

0 runs the CPU engine
2 runs the GPU CUDA engine

Setting the device index bypasses the EDEM GPU Device Test, this is designed for use on hardware where the EDEM GUI is not available (such as running on a cluster). If more than 1 GPU card is available, the required card can be specified. The name of each card is provided in the command line.


Device Index	GPU Device Name
0	Nvidia Quadro GP100
1	Nvidia GeForce GTX 1080

To run the GPU using the Nvidia Quadro GP100 card, execute the following command:
```
edem.exe -c -i c:\processing\mysim.dem -E 2 -D 0
```
To run using the Nvidia GeForce GTX 1080card, use the -D 1 flag.
The flags from the CPU version of EDEM need to be valid in order to set number of CPU processors used in the factory domains (-p), real time to simulate (-r), data save interval (-w) and Time Step used (-t).
To run on the command line with the GPU engine using only a single card, you must enter the following command:
```
edem.exe -console -i simulation_deck.dem -E 2 -D 0 -p 4 -r 2 -w 0.1 -t 1e-6
```