> For the complete documentation index, see [llms.txt](https://docs.zama.org/tfhe-rs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zama.org/tfhe-rs/tfhe-rs/1.3/get-started/benchmarks/gpu/gpu-programmable-bootstrapping.md).

# Programmable bootstrapping

This document details the GPU performance benchmarks of programmable bootstrapping and keyswitch operations using **TFHE-rs**.

{% hint style="info" %}
All GPU benchmarks were launched on H100 GPUs, and rely on the multithreaded PBS algorithm with a grouping factor set to 4.
{% endhint %}

## P-fail: $$2^{-40}$$

![](https://298266411-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkMvc1zsbZF9WUe7AqHFM%2Fuploads%2Fgit-blob-5fe4ccac60f79459267ddc32c564d38bb990c062%2Fgpu_pbs_benchmark_tuniform_2m40.svg?alt=media)

## P-fail: $$2^{-64}$$

![](https://298266411-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkMvc1zsbZF9WUe7AqHFM%2Fuploads%2Fgit-blob-9ee67e3eab197298df93106375d8ddec993585d1%2Fgpu_pbs_benchmark_tuniform_2m64.svg?alt=media)

## P-fail: $$2^{-128}$$

![](https://298266411-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkMvc1zsbZF9WUe7AqHFM%2Fuploads%2Fgit-blob-53680ba1347a73607625a952d03e58276c7ceb09%2Fgpu_pbs_benchmark_tuniform_2m128.svg?alt=media)

## Reproducing TFHE-rs benchmarks

**TFHE-rs** benchmarks can be easily reproduced from the [source](https://github.com/zama-ai/tfhe-rs).

The following example shows how to reproduce **TFHE-rs** benchmarks:

```shell
#PBS benchmarks:
make bench_pbs_gpu

#KS-PBS benchmarks:
make bench_ks_pbs_gpu
```


---

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