Blog

Preconditioners

Today we going to learn some important concepts related to matrix solvers. We will learn some of the preconditioners. They are often used as a black box in ABAQUS. We use its output ignoring the mechanism behind it. I hope with going through this blog post you will get a fair idea about the following […]

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Solution of a system of linear equations

A system of linear equations is a collection of one or more linear equations involving the same set of variables. We had studied different methods for solving a system of linear equations in our pre-engineering courses. So, let’s refresh our old memories. There are two methods of solving a system of linear equations: – Direct […]

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Untangling Research Through Zotero

Now if you know anything about research, you will know that the first step and the only continuous step in every type or stream of research is READING. You start your research by reading hundred’s of journals, articles, web-pages etc… and you pursue your research by doing the same thing. Until you reach the end, […]

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Parallel Computing with FEniCS

Parallel computing refers to breaking down a larger problem into independent smaller parts that can be executed simultaneously by multiple processors. The result is generated by combining results from all processors. It saves a lot of time and money compared to serial computing, where only one instruction is executed at any moment of time. In […]

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Parallelizing for loop in python with MPI

Parallel computing is necessary for venturing into the world of high performance computing. Parallel computing as the name suggests allows us to run a program parallelly. The preferred language of choice in our lab is Python and we can achieve parallel computation in python with the help of ‘mpi4py’ module. This comes with the standard […]

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FEniCS: The mesh workflow

This is my final post for the GSoC2019 program. The primary goal of the project was to ensure that the meshing package of choice gmsh, DOLFIN, and the preferred visualization package, Paraview work seamlessly together. The intention was to make improvements to the process of preserving the information about tagged regions of the mesh when importing it […]

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FEniCS: Completion of phase two

Goals for the second phase of the programming were two-fold: Create a method to construct MVC from arrays Develope code to test the integration of gmsh API with new mesh workflow. Creating MVC directly from arrays would allow bypassing saving of the mesh file onto the hard disk. The idea is to directly create MVC […]

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FEniCS: The XDMF schema

XDMF stands for eXtensible Data Model and Format. This type of file format is used to store and exchange a large amount of scientific data between high-performance computing codes. FEniCS supports ‘io’ operations with XDMF file format which is further supported by the visualization tool of choice PARAVIEW. In this post, I would describe a […]

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FEniCS: Completion of phase one

The coding period officially started on May 27th, 2019.  I have already discussed my project in detail in the previous posts and would just summarize it here. The goal of the project is to preserve the named metadata in `.geo` files through to the tagged regions (MeshValueCollection) in dolfinx. This would help the end user […]

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Understanding make and cmake

Up until this point in my life, I have never worked on a project in C++. Starting work on the cpp version of FEniCS was quite difficult as  I had no idea how even a simple program works in cpp. Thus, I planned to first properly learn the syntax of cpp and then try and […]

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