LuxiEdge / Research and measured work

A result is only as broad
as its test.

Explore inference, quantization, numerical primitives, risk, orbital computation, genomics, atmospheric science, and memory-movement research. Named measurements are evidence. Unmeasured applications and proposed capabilities remain research directions. Neither establishes universal production readiness.

01 / Inference

Prompt processing and generation are different tests.

Measured / internal

Current Qwen2-7B-Instruct evidence compares named vLLM and SGLang normal and deterministic modes on H100. It separates output repeatability, reference checks, throughput, and GPU-board energy.

Luxi logits and token-sequence hashes repeat across the tested conditions. Top-token and ordered top-5 reference agreement does not establish full-sequence identity with Hugging Face; published greedy sequences include divergences. Normal-mode generation has different speed and energy tradeoffs from deterministic-mode generation.

Measured boundary. Offline fixed-batch harness, not live production serving or multi-GPU deployment. Different H100 pods are not one absolute comparison. NVML GPU-board energy is not facility energy. No lifecycle savings were measured, and these current comparisons have not been third-party validated.

02 / Quantization

Representation needs its own evidence.

Research direction / no specific result claimed

Reduced precision and quantized representations need explicit rounding rules, a reference, and quality acceptance criteria. Repeatability alone would not prove model quality.

No specific quantization quality, compression, speed, or energy result is asserted here. The published inference comparisons are not a substitute for a quantization evidence pack. A proposed evaluation must define the representation and computation before making a claim.

03 / Numerical primitives

Check the reference, not just the hash.

Measured / synthetic input

The GPU-sum report compares stock float32 reductions with a correctly rounded exact total. Stock repeatability and numerical correctness are separate questions.

The published Luxi exact-path hash matches on the tested L4, x86, and Apple arm64 paths. This fixed-order correctness path is distinct from the faster chunked reduction. The synthetic positive input and single GPU model do not establish universal accuracy or platform support.

No transferred performance claim. Do not attach chunked-path timing to exact-path accuracy. These exact-path artifacts establish the stated reference check; their power sampling does not resolve energy per sum.

04 / Risk

Public catastrophe tests are not a runtime release.

Measured / public Oasis artifacts

Ordinary PiWind reruns test output stability. A separate synthetic extreme-TIV stress case checks ground-up totals against an exact reference. The two checks are not interchangeable.

The public stock-drift report records model scope, worker conditions, environments, hashing, and reproduction commands. It makes no speed or energy claim. The ordinary PiWind values were not exact-reference checked; the stress test does not validate every output or a customer book.

Customer pricing, market data, scenarios, and methodology remain controlled by the customer. Authoritative rebuilds remain comparators and reconciliation mechanisms.

05 / Scientific and orbital

Named grids. Serialized states.

Measured / named SGP4 grids

Public SGP4 artifacts compare serialized Luxi states across tested platforms for the jax100 and starlink-382a419 grids. Reference comparisons are separate from the state-byte test.

The reported state bytes match across macOS arm64, Linux arm64, qemu Linux x86_64, and H100 on those grids. The H100 build is near-earth only, and the x86 result is emulated, not a native-host test. Rejected starlink states are recorded as NaNs.

Research boundary. This is not universal orbital accuracy, operational flight validation, or a speed or energy claim. Broader scientific applications require their own inputs, reference checks, and execution contract.

06 / Atmospheric science

Kessler microphysics

Measured / named LAFT inputs

This study asks whether the same warm-rain calculation returns the same bytes on different hardware. It uses public float64 inputs from NSF NCAR’s LAFT work, credited to Linck, Dennis, Schreck, Stengel, and Gagne.

With identical float64 LAFT inputs, Luxi produced bit-identical output hashes across Intel Xeon, Apple M1 Pro, and NVIDIA A100 at nine tested sizes from 50 to 100,000 columns. In the same-pod A100 comparison, Luxi was 1.9× to 11.5× faster than the published Gemini JAX translation across the reported GPU timing sizes, including the GPU-only million-column case.

Scope and date. The evidence page gives no explicit run date. The million-column case was GPU-only, not a CPU/GPU identity result. JAX outputs remained within rounding of the Fortran reference: this is a reproducibility result, not an accuracy criticism. No affiliation with or endorsement by NSF NCAR or the authors is implied.

Additional evidence / scientific breadth

Different studies. Named boundaries.

These studies are published with their workload, hardware and limits.

Genomics / separate research effort

Deterministic-PairHMM

Measured / 17 June 2026

Stable aggregate haplotype scores let researchers check whether changing parallel execution changes the recorded result. This separate study used public GIAB HG002 MHC reads on CPU and NVIDIA H200.

The published result is fingerprint stability across the tested CPU thread counts and GPU block sizes. It concerns aggregate PairHMM scores on the recorded workload, not a universal genomics result.

Scope. This separate study measured PairHMM score stability across CPU thread counts and GPU block sizes on GIAB HG002. It did not test GATK likelihood equivalence. GATK accuracy is covered by Haplotastic: F1 above 0.99 against GIAB.

Supporting orbital study

SAAL comparison

Measured / named catalog grid

This comparison separates run-to-run repeatability from agreement between platforms. It compares SAAL, python-sgp4, and Luxi SGP4 on a public 15,940-object catalog over a 24-hour grid.

The grid starts at 12:00 UTC on 11 October 2026; the summary does not specify a separate measurement date. The CPU environments include Linux x86_64, Linux arm64 under qemu, native macOS arm64, and a Mac Intel binary under Rosetta 2. Each engine repeated on its own platform; the reported SAAL cross-platform differences were micrometres, not evidence of inaccuracy.

Limits. Linux arm64 here was emulated, unlike the native arm64 container in the OrbVeil study. Timing harnesses differed, so ratios are indicative rather than a matched performance claim. This supporting comparison implies no affiliation, government endorsement, or collision-avoidance product.

Supporting orbital study

OrbVeil catalog evidence

Measured / 11 October 2026

A catalog-scale check asks whether the same orbital inputs produce the same recorded state bytes. The study used the CelesTrak active catalog of 15,940 objects over a 24-hour grid, comparing Luxi with python-sgp4.

Luxi’s recorded hash matched on Apple M1 Pro/macOS, a native Linux arm64 container on that Mac, and qemu Linux x86_64. Stock python-sgp4 repeated within each platform but its hashes differed between these platforms. This is a result for that catalog and grid, not universal orbital accuracy.

Limits. Both Linux measurements were hash-only, with no Linux speed or energy result. Apple energy estimates are not facility power; timing and energy came from different sessions. This is not Jetson evidence, an affiliation or endorsement, or a collision-avoidance product. Reference position comparisons retain the source’s orbital-mode distinctions.

Memory movement / historical research

AttentionTransformer V2

Historical snapshots / June and July 2026

Memory movement can matter as much as arithmetic in attention workloads. The attention-v2 evidence records named attention, stack, and memory-scaling fixtures rather than a general model-serving result.

The public snapshots cover H200 research from June 2026 and an H100 suite dated 11 July 2026. They include an H200 16k rag_tokenized compressible-KV fixture, H100 stack comparisons, WNSM measurements, and long-context memory scaling. PyTorch Flash won the H100 short-sequence same-shape comparison.

Limits. Results depend on the fixture, shape, device, and date. GPU-board energy is not wall-plug or facility energy. These are historical research snapshots, not current Qwen2-7B serving evidence or a shipping memory product.

Sources / inspect before extrapolating

The public source index.

Pin the repository commit you inspect. Public checkers and raw artifacts support verification and recomputing reported summaries; they do not supply the proprietary benchmark engines.

Historical reports are dated context, not third-party validation of current inference comparisons.

Read the limits before choosing a workload.

Each family needs its own contract. Output hash equality is not an accuracy check; one hardware result is not a universal support promise; one measured path is not end-to-end deployment evidence.