NUCLEAR HPC CODE AUDIT

We refactor nuclear
simulation code.
Guaranteed ≥20%
performance gain.

We audit Fortran, C, and C++ HPC codebases used in nuclear simulation pipelines. Our engineers find vectorization gaps, MPI bottlenecks, and memory inefficiencies — then fix them. If we don't hit 20%, you don't pay.

Request Free ScanHow it works
≥20%
Guaranteed speedup
48h
Audit turnaround
100%
Money-back if missed
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// WHAT WE DO

Full-stack HPC performance engineering
for nuclear simulation codes

Decades of production Fortran, C, and C++ HPC code accumulate performance debt. We find it, measure it, and eliminate it.

⬡

Legacy Code Audit

Fortran 77/90/2003 · C · C++

Deep static and dynamic analysis of your simulation codebase. We identify dead code, redundant loops, and architectural bottlenecks that limit throughput.

⟩⟩

Vectorization & SIMD

AVX-512 · NEON · SVE

We rewrite loop bodies and data structures to maximize auto-vectorization and hand-optimize critical paths with intrinsics where needed.

⬕

MPI/OpenMP Tuning

MPI-3 · OpenMP 5 · SHMEM

Communication pattern analysis, collective optimization, load balancing, and thread affinity tuning for multi-node runs on HPC clusters.

◈

Memory Optimization

Cache · NUMA · BLAS

Data layout transformations, cache-oblivious algorithms, NUMA-aware allocation, and memory access pattern restructuring for bandwidth-bound codes.

Trusted by engineers at leading nuclear & HPC institutions
CEA
NRC
Sandia NL
INL
ORNL
ANL

+ nuclear operators · simulation software vendors · reactor design firms

// HOW IT WORKS

From scan to deployment
in three phases

01
48 hours

Free Audit Scan

Submit your repository (or grant read access). Our automated scanner maps the codebase, profiles hot paths, and generates a preliminary performance fingerprint.

No NDA required · Zero cost
02
5 business days

Performance Report

You receive a detailed report: every bottleneck ranked by impact, root-cause analysis, and a concrete optimization roadmap with projected gains per fix.

PDF + live briefing call
03
4–8 weeks

Implementation & Guarantee

We implement all optimizations on a feature branch. Benchmarked before and after. If we don't hit the guaranteed threshold, the engagement is free.

Benchmark-verified · Guaranteed
// PRICING

Transparent, outcome-based pricing

Choose the audit depth that matches your codebase. All three tiers are available directly through Stripe.

STARTER
$4,900
one-time

Automated + manual HPC performance scan for focused nuclear simulation audits.

  • ◆Up to 50K LOC
  • ◆Fortran, C, and C++ codebases
  • ◆Automated + manual performance scan
  • ◆Detailed bottleneck report
  • ◆>=3 actionable optimization paths
  • ◆Estimated performance gain
  • ◆Implementation roadmap
Start Audit
MOST POPULAR
FULL REFACTOR
$19,900
one-time

Complete refactoring package for production nuclear simulation codebases.

  • ◆Up to 200K LOC
  • ◆Complete codebase refactor
  • ◆Vectorization pass
  • ◆MPI/OpenMP tuning
  • ◆Memory layout refactor
  • ◆Wall-time benchmark analysis
  • ◆>=20% wall-time reduction guarantee
  • ◆Full refund if threshold is missed
Buy Full Package
ENTERPRISE
$49,900
base price

Unlimited-scope audit and refactoring engagement for labs, operators, and defense teams.

  • ◆Unlimited LOC audit + refactoring
  • ◆12-month support
  • ◆Priority SLA
  • ◆National lab ready
  • ◆Nuclear operator programs
  • ◆Defense agency engagements
Buy Enterprise

All prices in USD · Full Refactor includes ≥20% wall-time reduction guarantee · NDA available upon request

// REQUEST FREE SCAN

Your code is leaving
performance on the table.

Send us your repository link or grant read access. We'll run a no-cost automated scan within 48 hours and show you exactly what's slowing your code down.

contact@fissio.nanocorp.app·NDA available · Replies within 24h