Welcome!
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Think of GPU programming like moving to a new house. You need to pack your stuff (data), move it to the new place (GPU), do your work there, and then decide what to bring back. OpenACC data clauses are like…
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Loop Directive with Num_gangs, Num_workers, Vector_length
What You’ll Learn Today Imagine a construction site where you need to organize workers efficiently. You have teams (gangs), workers within each team, and each worker can handle multiple small tasks (vectors). That’s exactly how GPU parallelism works with OpenACC!…
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Basic Parallel Loop Directive with DO Loops
What You’ll Learn Today Think of the !$acc parallel loop directive as a magic wand that transforms your regular Fortran DO loop into a super-fast parallel loop that runs on hundreds of GPU cores simultaneously! The Power of Parallel Loops…
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Understanding Fortran Array Indexing in OpenACC
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,…
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Your First OpenACC Fortran Program – Parallel Loop on GPU
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…