Test graph dataset from the paper "A High-Performance Connected Components
Implementation for GPUs" by J. Jaiganesh and M. Burtscher".

This data was retrieved from
https://userweb.cs.txstate.edu/~burtscher/research/ECLgraph/index.html

The license of this data is covered by the [ECL graph converter license],
which is repeated here for convenience.

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**ECL graph converter license**

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[ECL graph converter license]: https://userweb.cs.txstate.edu/~burtscher/research/ECLgraph/license.html
