> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vast.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Square Function

> A minimal deployment that squares a number on a remote GPU.

The simplest possible deployment: a single function with no context or dependencies.

## Deployment

```python theme={null}
# deploy.py
from vastai import Deployment
from vastai.data.query import gpu_name, RTX_4090, RTX_5090

app = Deployment(name="square")


@app.remote(benchmark_dataset=[{"x": 2}])
async def square(x):
    return x * x


app.configure_autoscaling(min_load=1000)
image = app.image("vastai/base-image:@vastai-automatic-tag", 16)
image.require(gpu_name.in_([RTX_4090, RTX_5090]))
app.ensure_ready()
```

## Client

```python theme={null}
# client.py
import asyncio
from deploy import app, square


async def main():
    for x in range(1, 10):
        result = await square(x)
        print(f"square({x}) = {result}")


if __name__ == "__main__":
    asyncio.run(main())
```

## What This Demonstrates

* Minimal `@remote` function with no dependencies
* Using `benchmark_dataset` with a single sample input
* Calling a remote function in a loop