🔧 What’s New in Version 2.0

Mesher: Numerous internal improvements to enhance robustness and reliability.

ECHO3D: A critical bug in the Perfectly Matched Layer (PML) in the Z direction has been fixed.

IndirectIntegration: Now supports multithreaded parallel execution, accelerating complex computations.

This release is part of our ongoing effort to make ECHO3D faster, more stable, and easier to use in demanding simulation environments.

The post ECHO3D Version 2.0 Released appeared first on ECHO4D.

I have created a project called pyECHO4D, which involves Python scripts for pre- and post-processing data for Code ECHO. It is publicly available on GitHub. The scripts were converted from MATLAB with the help of ChatGPT. Of course, I have corrected any errors and tested them using examples.

Here’s the link to the repo:
https://github.com/zagorodnov/pyECHO4D

At the moment, it contains only files from the ECHO3D/src directory. These can be used instead of the MATLAB files available in the latest ECHO3D release.

If you or your colleagues are interested, feel free to fork the repo, make changes, and submit a pull request.

Looking forward to hearing from you!

Cheers,
Igor

The post PyECHO4d appeared first on ECHO4D.

New features: the background can be set to vacuum or PEC.

The mesher is improved to treat properly many materials.

The manual is updated.

The code is compiled for Windows ARM, Windows Intel, MacOS ARM (M1), Linux ARM, Linux Intel.

The post ECHO3D updated to version 1.5 appeared first on ECHO4D.

When you download the ECHO3D code on a macOS computer, the files may have an extended attribute called com.apple.quarantine. You must remove this attribute before launching the applications.

Removing the Extended Attribute:

1. Open Terminal.
2. Navigate to the Codes/MacOS_ARM directory.
3. Run the following command: xattr -c ./*

Step-by-Step Instructions for Running ECHO3D:

1. Open Terminal.
2. Navigate to the Example Directory: cd (your path)/ECHO3D_v1_4/Examples/N1_RoundStepOut_LongWake
3. Copy All Codes from the “Codes” Directory: cp ../../Codes/MacOS_ARM/* ./
4. Run Mesher: ./Mesher
5. Run InitField: ./InitField
6. Run ECHO3D: ./ECHO3D
7. Run IndirectIntegration: ./IndirectIntegration

Using Command Files for Simplified Execution:

1. Navigate to the Example Directory: cd (your path)/ECHO3D_v1_4/Examples/N1_RoundStepOut_LongWake
2. Change the File Attributes to Executable: chmod +x run_Mac.command
3. Execute the Command File:

• Double-click run_Mac.command in Finder.
• Alternatively, run it from Terminal: ./run_Mac.command

Note: These instructions are also applicable to ECHO2D.

Parallelization Options for ECHO3D and ECHO2D:

ECHO3D Parallelization:

• Technology: Uses OpenMP (or threads).
• Setup: Can only run on one computer with multiple cores.
• Configuration: Set the ThreadsNumber parameter in input.txt to a value equal to or less than the number of available cores.

ECHO2D Parallelization Options:

1. MPI Parallelization:

• Location: Codes/MacOS_ARM_MPI
• Usage: Run using the mpirun command, suitable for clusters with multiple nodes.

2. Thread-Based Parallelization:

• Location: Codes/MacOS_ARM_OpenMP
• Usage: Runs on a single computer with multiple cores.
• Configuration: The number of threads will be equal to the number of modes defined in input_in.txt using the Modes parameter.

In the example “N10_TESLACavityLong,” the azimuthal modes for calculations are specified in the input_in.txt file via the parameter “Modes.”

Modes=0 means that only the monopole mode (m=0) will be calculated. Modes=0 1 means that both monopole and dipole modes will be calculated.

The calculation of each mode itself is not parallelized; however, different modes can be calculated in parallel. This means that:

In the first case (Modes=0), you should use “mpirun -np 1” or simply run the code without the mpirun command. In the second case (Modes=0 1), you can use a maximum of two processors with the command “mpirun -np 2.”

For rectangular geometries, where typically 30-100 modes are needed, parallelization can be beneficial.

For rotationally symmetric modes, the ECHOz2 code can be used. This code calculates only one mode at a time, but the computation is parallelized with threads/OpenMP, allowing multiple processors to work in parallel for a single mode calculation. ECHOz2 includes a GUI; however, there is currently no macOS version available. If you have Parallels and install Windows ARM, the ARM version of ECHOz2 runs efficiently on a Mac.

The post Installation and execution of ECHO3D and ECHO2D under macOS appeared first on ECHO4D.

New features: Perfectly Matched Layer.

Several bugs are fixed.

The manual is updated.

The code is compiled for Windows ARM, Windows Intel and MacOS ARM (M1).

The post ECHO3D updated to version 1.4 appeared first on ECHO4D.

• a  bug in ECHO2D for the rectangular structures with the magnetic boundary condition fixed;
• the calculation of the resistive wall wake in ECHO2D, ECHOz2 is changed to improve the accuraccy;
• the code ECHO2D is compiled for different OS and Intel/ARM processors.

The post The package ECHO2D is updated to version 3.5 appeared first on ECHO4D.

The post The package ECHO1D is updated to version 1.3 appeared first on ECHO4D.

The post Version 3.4 of ECHO2D archive appeared first on ECHO4D.

The post ECHO3D under Mac OS appeared first on ECHO4D.

ASCII format for STL files is added.

The post A bug in ECHO3D Windows version is fixed. appeared first on ECHO4D.