Performance Engineering for AI: From Embedded Devices to the Cloud

Push your compute to the limit — Fixstars Performance Engineering

Overview

What is performance engineering?

Performance engineering is the systematic pursuit of software speed and efficiency — translated directly into business outcomes.

More throughput. Faster response. Less power for the same work. Lower compute cost. Optimization pays off in many shapes.

Throughput

Raise data processing bandwidth and increase throughput.

Latency

Shorten user response time and cut latency.

Efficiency

Improve power efficiency. Get more performance per watt.

Cost

Improve cost performance. Lower TCO.

Scale

Every system, every scale

From embedded devices to supercomputers — at every scale, performance engineering is a core technology that can make or break a product or service.

Embedded
  • Longer battery life
  • Lower memory and power use
Autonomous driving Sensor processing
Workstation
  • Better GPU utilization
  • Shorter response times
Local LLMs Internal AI tools
Cloud
  • Lower cloud costs
  • Better resource utilization
Inference APIs AI agents
Supercomputer
  • Peak performance
  • Maximum power efficiency
Scientific computing Large-scale model training
Why Now

Why performance engineering now?

Performance work isn't new. But several shifts are converging, and getting performance out of software matters more than ever.

Surging compute demand

AI is being built into every product and service, and the compute it needs keeps growing. Meeting that demand with limited compute and power takes efficient software.

More diverse AI chips

AI processors are diversifying fast — from GPUs to NPUs to custom chips. The same AI model needs very different optimization depending on the chip it runs on.

How development is changing

AI agents are changing how software gets built. Now that the measure-and-improve loop can be handed off to agents, performance work is easier to take on.

AI moves onto devices

From autonomous driving to inspection systems, more AI now runs directly on devices. Getting the required performance out of limited compute takes real expertise.

Principle

The principle: measure, then improveAgentic engineering: the shortest path to your performance target

Measure right, then fix efficiently. That loop is what pushes performance up. Agentic engineering is a development approach where AI agents write the code while humans direct the work and own its quality. With agents running the cycle, you can reach your performance target in less time.

Set conditions Human decides

Humans set the target and how to measure

  • Set a target

    The theoretical peak is the ceiling, and the closer you get, the harder each gain becomes. So decide up front what you're aiming for.

  • Pick the right environment

    Measure in an environment identical to production — or as close to it as possible.

  • Control measurement side effects

    Minimize measurement overhead — or account for it explicitly when interpreting results.

  • Handle run-to-run variance

    Decide in advance how to handle noise. Identify the cause first; if it's truly measurement error, summarize with the right statistic (median or mean).

Run the cycle Agent executes

Agents run the measure-and-improve loop

Because the measurements show whether each change helped, this cycle can run without waiting on human judgment.

Measure
Profile
Find bottleneck
Improve
Optimize
Test
↺ Repeat until the target is met
  • Aim at the real bottleneck

    Optimizing code that isn't the bottleneck pays off little. Find the bottleneck and focus your effort there.

Verify results Human decides

Humans verify the results are sound

  • Question whether each step is needed at all

    Sometimes the biggest win isn't a faster path — it's removing the step entirely. Whether it can be removed is a call for someone who knows the spec.

  • Catch numbers-only gains

    Agents chase the target number, so they may change measurement conditions or give up accuracy just to make the numbers look better. Reviewers make sure no such changes slip through.

Merge to production Human decides

Only approved changes reach production

Changes are merged into the production codebase only after they pass review.

Offering

Products and services for performance engineering

Performance engineering for AI/LLM development and deployment — delivered as services and as products. From embedded systems to GPU workstations, pick what fits your problem.

Services

AI Model Porting & Acceleration for Embedded Devices

Optimization and embedded device porting, delivered in one-third the usual time — in a secure environment.

Good fit if you
  • Can't hit performance targets on target hardware
  • Lose accuracy after quantization
  • Re-port for every chip change
Products

Fixstars Vega

Build an embedded software development environment where AI runs without sending code outside the company.

Good fit if you
  • Want AI in embedded development
  • Cannot send source code outside
  • Want the whole team using AI
Products

Fixstars AIBooster

Install on your GPU servers. AIBooster continuously profiles AI/LLM workloads, surfaces bottlenecks, and reduces GPU cost.

Good fit if you
  • Are burdened by rising AI processing and infrastructure costs
  • Want more efficient AI development
  • Want better ROI from existing GPU infrastructure
FAQ

Frequently asked questions

Our engineers are fluent in the architectures of CPU, GPU, FPGA, and other processors — and they take the whole journey: code analysis, bottleneck identification, algorithmic refinement. Cloud provider infrastructure support and SI work usually stop short of optimizing inside the software itself. Fixstars has specialized in software acceleration for 20+ years, and our core strength is pulling hardware to its limit. The result: 100+ clients, 99%+ continued-engagement rate.