2024-02-06 04:54:21 -08:00
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# halo2
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2020-08-22 13:15:39 -07:00
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2024-02-06 04:54:21 -08:00
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## Usage
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This repository contains the [halo2_proofs](halo2_proofs/README.md) and
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[halo2_gadgets](halo2_gadgets/README.md) crates, which should be used directly.
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2020-08-22 13:15:39 -07:00
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2021-06-01 16:01:04 -07:00
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## Minimum Supported Rust Version
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2023-02-10 09:48:42 -08:00
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Requires Rust **1.60** or higher.
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2021-06-01 16:01:04 -07:00
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Minimum supported Rust version can be changed in the future, but it will be done with a
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minor version bump.
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2021-02-23 05:25:37 -08:00
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2021-06-24 04:24:08 -07:00
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## Controlling parallelism
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`halo2` currently uses [rayon](https://github.com/rayon-rs/rayon) for parallel computation.
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The `RAYON_NUM_THREADS` environment variable can be used to set the number of threads.
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2023-02-10 12:39:29 -08:00
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You can disable `rayon` by disabling the `"multicore"` feature.
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Warning! Halo2 will lose access to parallelism if you disable the `"multicore"` feature.
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2023-02-01 10:42:26 -08:00
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This will significantly degrade performance.
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2020-08-22 13:15:39 -07:00
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## License
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2022-04-07 07:22:49 -07:00
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Licensed under either of
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2020-08-22 13:15:39 -07:00
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2022-04-07 07:22:49 -07:00
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* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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http://www.apache.org/licenses/LICENSE-2.0)
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* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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2020-08-22 13:15:39 -07:00
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2022-04-07 07:22:49 -07:00
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at your option.
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### Contribution
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Unless you explicitly state otherwise, any contribution intentionally
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submitted for inclusion in the work by you, as defined in the Apache-2.0
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license, shall be dual licensed as above, without any additional terms or
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conditions.
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