STRESS — System Threat Resilience & Extreme Stress Suite (v0.2)

STRESS is a reliability benchmarking framework designed to evaluate how computational workloads behave when foundational operating assumptions are violated by environmental and systemic constraints. Unlike terrestrial benchmarks — which typically assume continuous power, stable connectivity, and rare environmental disruption — STRESS focuses on resilience and behavioral stability under persistent stress, rather than performance optimization, throughput, or cost efficiency.

Status

• Specification: Frozen (v0.2)
• Reference Implementation: Rust (stress-ref/) + Python (stress/)
• Compliance: Binary

Quick Start

pip install -e .
stress-benchmark --workload W1-A --profile SP-1 --seed 42 --runs 3 --out-dir ./results

Or from Python:

from stress.runner import run_benchmark

run_benchmark(
    out_dir="./results", workload_id="W1-A", workload_version="0.2",
    stress_profile_id="SP-1", stress_parameters={"SP-1": {"rate": 0.001}},
    execution_environment={"runtime": "python"}, master_seed=42, n_runs=3,
    gds_levels=[0.1, 0.2, 0.3],
)

Full Specification

• STRESS v0.2 Specification — Complete technical specification
• Implementation Guide — Implementation details
• Complete Specification — Extended technical document
• Reference Workloads — W1-A, W2-A, W3-A definitions
• Stress Profiles — SP-0 through SP-5 definitions
• Glossary — Term definitions
• Metric Independence Analysis — GDS/ARR independence proof
• Validation Methodology — SRI correlation validation protocol

Repository Structure

Path	Description
docs/specification-v0.2.md	Normative specification
docs/STRESS_v0_Reference_Workloads.md	W1-A, W2-A, W3-A workload definitions
docs/STRESS_v0_Reference_Stress_Profiles.md	SP-0 through SP-5 profiles
docs/metric-independence.md	GDS/ARR independence proof
docs/validation-methodology.md	SRI correlation validation protocol
docs/glossary.md	Term definitions
docs/historical/	Archived OCRB v0.1 specification
stress-ref/	Rust reference implementation (canonical, 34 tests)
stress/	Python reference implementation
tests/	Python test suite
examples/hello_benchmark.py	Minimal "hello benchmark" walkthrough
examples/run_w1a_sp1.py	W1-A with SP-1 radiation profile
examples/run_w3a_sp1.py	W3-A distributed workload example
schema/run-record.schema.json	Per-run JSON report schema
schema/aggregate.schema.json	Aggregate statistics schema
schema/manifest.schema.json	Benchmark manifest schema
STRESS_v0_Implementation_Guide.md	Implementation reference
STRESS_FRAMEWORK_RESEARCH.md	Background research and design rationale
CONTRIBUTING.md	Contribution guidelines

What This Repo Is NOT

• Not a performance benchmark
• Not an optimization framework
• Not adaptive or learning-based

Running a Benchmark

Rust (recommended)

cd stress-ref
cargo run -- --workload W1-A --profile SP-1 --seed 42 --runs 10 \
  --gds-levels 0.1,0.2,0.3 --isolation-duration 60.0 --c-total 5

Python CLI

pip install -e .
stress-benchmark --workload W1-A --profile SP-1 --seed 42 --runs 10 --out-dir report

SRI Aggregation

SRI uses the geometric mean of five behavioral proxies (GDS, ARR, IST, REC, CFR), each normalized to [0,1]:

SRI = (GDS × ARR × IST × REC × CFR)^(1/5) × 100

Geometric mean ensures zero resilience in any single dimension drives SRI toward 0 — a system cannot hide catastrophic failure behind strong scores elsewhere. GDS also reports monotonicity and smoothness metadata to distinguish graceful degradation from cliff-drops.

Domain-Specific SRI

STRESS supports domain-specific weighting profiles for SRI computation (weighted geometric mean):

Profile	IST Weight	CFR Weight	Use Case
Equal (default)	0.20	0.20	General-purpose comparison
Satellite/LEO	0.35	0.10	Isolation survival matters most
Data Center	0.10	0.35	Cascade containment matters most
Tactical Edge	0.20	0.10	Recovery and degradation balanced

Version History

Version	Date	Description
v0.2	2026-03	STRESS — Current specification with SRI [0,100] scale
v0.1	(Archived)	OCRB — Original specification with ORI [0,1] scale

Migration from OCRB v0.1

STRESS v0.2 supersedes OCRB (Orbital Compute Readiness Benchmark) v0.1.

OCRB v0.1	STRESS v0.2	Conversion
ORI [0, 1]	SRI [0, 100]	SRI = ORI * 100
0.85 threshold	85 threshold	Direct mapping
Stress Regimes	Stress Profiles	Renamed
SR-1 to SR-5	SP-1 to SP-5	Renamed

Archives

• OCRB v0.1 Specification (Deprecated) — Original specification preserved for reference

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Maintained by Obelus Labs, LLC

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