Dolfin-x: An upgraded version of Dolfin

• Post by: Shubham Saurabh
• January 31, 2022
• No Comment

 

FEniCSx is the new version of FEniCS that is currently actively developed. Dolfin-x is the computational environment of FEniCS and implements the FEniCS problem-solving environment in Python and C++.

New features in Dolfin-x in addition to existing features of Dolfin include:

• Variational formulations with complex numbers support

• Support for quadrilateral and hexahedral elements

• Higher-order mesh support

 

Installation: A Docker image with Dolfin-x :

1. Turn on the Docker Desktop application

2. Open Terminal

3. Run the command

docker pull dolfinx/dolfinx:latest

This will install a docker image of Dolfin-x in your system.

Running Dolfin-x

1. Open Docker Desktop application

2. Open Terminal

3. There are two ways(real and complex builds) with which we can run the code using Dolfin-x:

(a) To run code through real build of Dolfin-x, use the following command-

Suppose we want to work in codes folder of E drive of the PC

docker run -p 8888:8888 -v E:/codes:/root/ -w /root/ dolfinx/lab:latest

 

(b) To run code through the complex build of Dolfin-x, use the following command-

To access the same codes folder of E drive of the PC

docker run -v E:\codes\:/root/shared -w "/root/shared" --rm --env LD_LIBRARY_PATH=/usr/local/dolfinx-complex/lib --env PATH=/usr/local/dolfinx-complex/bin:/usr/local/gmsh-4.6.0-Linux64-sdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin --env PKG_CONFIG_PATH=/usr/local/dolfinx-complex/lib/pkgconfig --env PETSC_ARCH=linux-gnu-complex-32 --env PYTHONPATH=/usr/local/dolfinx-complex/lib/python3.8/dist-packages -p 8888:8888 dolfinx/lab