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# num_cpus
[](https://travis-ci.org/seanmonstar/num_cpus)
[](https://ci.appveyor.com/project/seanmonstar/num-cpus)
- [CHANGELOG](CHANGELOG.md)
Count the number of CPUs on the current machine.
## Usage
Add to Cargo.toml:
```toml
[dependencies]
num_cpus = "1.0"
```
In your `main.rs` or `lib.rs`:
```rust
extern crate num_cpus;
// count logical cores this process could try to use
let num = num_cpus::get();
```