Learn Parallel Programming

Sharing knowledge on Parallel Programming

Author: Mandar Gurav

  • Understanding Fortran Array Indexing in OpenACC

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    Mandar Gurav
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    What You’ll Learn Today Fortran counts differently than some other programming languages, and this matters A LOT when working with OpenACC! It’s like the difference between floor numbers in American buildings (1st floor, 2nd floor) versus British buildings (ground floor, 1st floor). The Big Difference: Starting from 1 Fortran Way (starts from 1): C/Python Way…

  • Your First OpenACC Fortran Program – Parallel Loop on GPU

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    Mandar Gurav
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    What You’ll Learn Today Today you’ll write your very first OpenACC program that actually runs on the GPU! Think of it like learning to ride a bicycle – once you understand the basic structure, everything else becomes easier. The Magic of Parallel Loops Imagine you’re a teacher with 100 math problems to grade. You could:…

  • Introduction to OpenACC with Fortran

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    Mandar Gurav
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    What You’ll Learn Today Imagine you have a huge pile of homework to do. You could do it all by yourself, or you could ask your friends to help. That’s exactly what OpenACC does for your computer programs – it gets help from the GPU (Graphics Processing Unit) to make calculations super fast! What is…

  • Message Passing Interface (MPI) : MPI_Finalize example

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    Mandar Gurav
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    This post talks about MPI_Finalize function in MPI. MPI_Finalize is the function used in the Message Passing Interface (MPI) to terminate the MPI environment. It must be called at the end of an MPI program once all communication and computation tasks are complete. It cleans up resources allocated by MPI, ensuring proper shutdown. Syntax for…

  • Message Passing Interface (MPI) : MPI_Comm_rank example

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    Mandar Gurav
    in

    This post talks about MPI_Comm_rank function in MPI. MPI_Comm_rank function in the Message Passing Interface (MPI) is used to determine the rank (or unique ID) of a process within a communicator. Each process in an MPI program has a unique rank, which is an integer ranging from 0 to size-1 (where size is the total…