vector-multiplication-cuda
Comparing approaches for CUDA-based vector multiplication.
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Repository
Comparing approaches for CUDA-based vector multiplication.
Basic Info
- Host: GitHub
- Owner: puzzlef
- License: mit
- Language: C++
- Default Branch: main
- Homepage: https://gist.github.com/wolfram77/4ef16ab9699ac03a617b8731dd240e1f
- Size: 218 KB
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Metadata Files
README.md
Comparing approaches for CUDA-based vector multiplication.
In each of the experiments given below, we multiply two floating-point vectors
x and y, with number of elements from 10^6 to 10^9 using OpenMP.
Each element count is attempted with various approaches, running each approach 5
times to get a good time measure. Multiplication here represents any
memory-aligned independent operation, or a map() operation.
Adjusting Launch config
In this experiment (adjust-launch), we multiply two floating-point vectors x
and y using CUDA. Each element count is attempted with various CUDA launch
configs. Results indicate that a grid_limit of 16384/32768, and a
block_size of 128/256 to be suitable for both float and double.
Using a grid_limit of MAX and a block_size of 256 could be a decent
choice.
Adjusting Thread duty
In this experiment (adjust-duty), we compare various per-thread duty numbers for CUDA-based vector multiplication. Each element count is attempted with various CUDA launch configs and per-thread duties. Results indicate no significant difference between adjust-launch approach, and this one.
References
Owner
- Name: puzzlef
- Login: puzzlef
- Kind: organization
- Website: https://puzzlef.github.io/
- Repositories: 10
- Profile: https://github.com/puzzlef
A summary of experiments.
Citation (CITATION.cff)
cff-version: 1.2.0
message: "If you use this software, please cite it as below."
authors:
- family-names: Sahu
given-names: Subhajit
orcid: https://orcid.org/0000-0001-5140-6578
title: "puzzlef/multiply-cuda-adjust-launch: Comparing various launch configs for CUDA based vector multiply"
version: 1.0.0
doi: 10.5281/zenodo.5599206
date-released: 2021-10-26
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