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The AI GPU performance engineer

Profiles, diagnoses, and optimizes your GPU code. From kernels to models, runtimes, and entire inference pipelines

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Used by engineers at
Intel
LinkedIn
Red Hat
Pinterest
Rebellions
Nuro
Datadog
Naver
MIT
Arcee
Codeflash
Datacrunch
Partcl
Flotorch
Galaxeye
Intel
LinkedIn
Red Hat
Pinterest
Rebellions
Nuro
Datadog
Naver
MIT
Arcee
Codeflash
Datacrunch
Partcl
Flotorch
Galaxeye
Backed by
Fifty Years
Fifty Years
Y Combinator
Y Combinator
Liquid 2
Liquid 2
Jeff Dean
Jeff DeanChief Scientist at Google
Woj Zaremba
Woj ZarembaCo-Founder at OpenAI
Dan Fu
Dan FuHead of Kernels at Together
Charlie Songhurst
Charlie SonghurstMeta Board of Directors
Arash Ferdowsi
Arash FerdowsiCo-Founder at Dropbox
Kawal Gandhi
Kawal GandhiOffice of the CTO at Google
NVIDIA Inception
NVIDIA Inception
Fifty Years
Fifty Years
Y Combinator
Y Combinator
Liquid 2
Liquid 2
Jeff Dean
Jeff DeanChief Scientist at Google
Woj Zaremba
Woj ZarembaCo-Founder at OpenAI
Dan Fu
Dan FuHead of Kernels at Together
Charlie Songhurst
Charlie SonghurstMeta Board of Directors
Arash Ferdowsi
Arash FerdowsiCo-Founder at Dropbox
Kawal Gandhi
Kawal GandhiOffice of the CTO at Google
NVIDIA Inception
NVIDIA Inception
Fifty Years
Fifty Years
Y Combinator
Y Combinator
Liquid 2
Liquid 2
Jeff Dean
Jeff DeanChief Scientist at Google
Woj Zaremba
Woj ZarembaCo-Founder at OpenAI
Dan Fu
Dan FuHead of Kernels at Together
Charlie Songhurst
Charlie SonghurstMeta Board of Directors
Arash Ferdowsi
Arash FerdowsiCo-Founder at Dropbox
Kawal Gandhi
Kawal GandhiOffice of the CTO at Google
NVIDIA Inception
NVIDIA Inception
01 / Profile

Runs real profilers on your code. NSight Compute, ROCProfiler, PyTorch Profiler, and more.

SM UtilizationNVIDIA B200
014284256708498
Memory bound · 62% BW
02 / Diagnose

Reads traces and finds the bottleneck. Cross-references profile, docs, and code to explain what's slow and why.

Ask anything about GPU optimization...
03 / Patch

Writes and validates the fix. Generates optimized code and checks PTX, SASS, and IR to verify the change at the compiler level.

PTX Output14 instructions
1ld.param.u64 %rd1, [param_0]
2ld.param.u64 %rd2, [param_1]
3cvta.to.global.u64 %rd4, %rd2
4mul.wide.s32 %rd7, %r1, 4
5add.s64 %rd8, %rd4, %rd7
6ld.global.f32 %f1, [%rd8]
7cvta.to.global.u64 %rd5, %rd3
8add.s64 %rd9, %rd5, %rd7
9ld.global.f32 %f2, [%rd9]
10add.f32 %f3, %f1, %f2
11cvta.to.global.u64 %rd6, %rd1
12add.s64 %rd10, %rd6, %rd7
13st.global.f32 [%rd10], %f3
14ret
Verified at PTX level · 36% fewer instructions
04 / GPU Sandboxes

Runs on real GPUs. On-demand environments for profiling, benchmarking, and testing on actual hardware.

GPU Sandboxon-demand
wafer — terminal
$wafer tool ncu run --target cloud-b200_
Provisioning target...
Target ready
0.8s
$wafer tool ncu analyze profile.ncu-rep_
Collecting metrics...
14 metrics collected
2.1s
$wafer tool eval --target cloud-mi300x_
Provisioning target...
Target ready
0.4s
$wafer tool eval --benchmark_
Running benchmark...
3.2x faster than baseline
1.8s

Agent-native access to all the tools for the full performance loop.
The Wafer agent has its own profiler, compiler analyzer, docs and more.

NCU Integration

Runs NVIDIA Compute Utility to collect hardware counters and identify optimization targets.

ROCprofiler Compute

Full AMD GPU profiling support. One agent across both NVIDIA and AMD hardware.

Documentation Search

Collection of GPU guides and optimization best practices to ground its recommendations.

Compiler Explorer

Inspects PTX and SASS output from your CUDA code to verify optimizations at the compiler level.

Trace Analysis

Interprets profiler output and extracts actionable insights, not just raw numbers.

Code Diff

Review the agent's proposed changes before applying. Accept, reject, or modify.

Benchmark Harness

Runs reproducible benchmarks before and after every change to verify speedups.

Autonomy Control

Control how much the agent does on its own. Step-by-step approval or fully autonomous.

Simple, transparent pricing

Start free, scale as you need. Credits work for both AI agent calls and GPU compute time.

Book a Demo
Popular

Hacker

$0/mo
$10credits/month
Includes
$10 free credits/month
Credit top-ups available
B200s with hardware counters
Access to all agent capabilities

Enterprise

Contact Us
Unlimitedcredits/month
Includes
Everything in Hacker + Enterprise-exclusive features
Forward-deployed engineering
Dedicated infrastructure
Custom SLAs
On-premise deployment