Skill Claude CodeCodex
Write and review technical developer blog posts as version-controlled markdown. Use this skill when the user wants to draft, write, or review a blog post / dev write-up / release note / tutorial about their code — typically HPC, Fortran, Python, or scientific-computing work. Orchestrates a draft pass and two…
Skill Claude CodeCodex
Practitioner knowledge base for high-performance computing in C++ — the full toolchain, language idioms, parallel programming models, and HPC ecosystem. Use when building or optimizing C++ HPC software: the toolchain (Linux/cluster, git, CMake/Spack, compiler flags, SLURM); modern C++ for performance (RAII, smart…
Skill Claude CodeCodex
Knowledge base from the "CUDA Programming Guide" (NVIDIA, Release 13.3). Use when writing/reading/debugging CUDA C++ or CUDA Python, applying CUDA frameworks for kernels, SIMT/tile programming, streams & graphs, unified memory, cooperative groups, async copies/TMA, multi-GPU, or referencing CUDA APIs, specifiers…
Skill Claude CodeCodex
Operator workflow for post-processing a RAW shoot in darktable with Claude as the operator. Use when the user wants to develop/process/batch their RAW photos (NEF/CR2/ARW), cull a shoot, apply a consistent look across a series, control edit values (exposure etc.) from the prompt, or run darktable-cli batches. Drives…
Skill Claude CodeCodex
Knowledge base from the darktable 4.6 user manual. Use when developing RAW photos (NEF/CR2/etc.) in darktable, driving darktable-cli for headless/batch export, reasoning about the scene-referred pixelpipe, modules (exposure, filmic rgb, color calibration, highlight reconstruction, tone equalizer), masking/blending…
Skill Claude CodeCodex
Expert knowledge of FoBiS.py (Fortran Building System for poor men) — an automatic Fortran build tool that resolves module dependency hierarchies without manual makefiles. Use this skill whenever the user asks about: writing or editing a fobos file; running any fobis subcommand (build, clean, fetch, install, rule…
Skill Claude CodeCodex
Authoritative knowledge base from the ISO/IEC 1539-1:2023 Fortran standard (J3/23-007r1). CONSULT THIS BEFORE ANSWERING — do not answer Fortran-standard questions from memory; the standard's exact rules, constraints (Cxxx), and version deltas are easy to misremember. TRIGGER whenever a question concerns: what the…
Skill Claude CodeCodex
Generate or edit images using AI models (FLUX, Nano Banana 2). Use for general-purpose image generation including photos, illustrations, artwork, visual assets, concept art, and any image that is not a technical diagram or schematic. For flowcharts, circuits, pathways, and technical diagrams, use the…
Skill Claude CodeCodex
Practitioner knowledge base for parallel, multithreaded, and GPU programming — the design methodology, performance laws, and cross-technology optimization playbook. Use when designing or optimizing parallel software: choosing a parallel decomposition (PCAM, geometric/pipeline/master-worker patterns); reasoning about…
Skill Claude CodeCodex
Practitioner knowledge base for the practical workflow tooling of HPC clusters — the command-line skills around writing, building, debugging, profiling, and running scientific code at scale. Use when working on a cluster or HPC project's toolchain: Unix shell for HPC (pipes, grep/sed/awk, ssh/rsync, tmux, environment…
Skill Claude CodeCodex
Router and disambiguation map for the HPC skill fleet — decides WHICH high-performance-computing skill to consult when a query plausibly matches several. Use ONLY for cross-cutting routing/navigation: when the user asks which HPC skill covers a topic, says 'what HPC skills do I have', wants the map/relationships…
Skill Claude CodeCodex
Practitioner knowledge base for the numerical and algorithmic theory of high-performance scientific computing — the science beneath the parallel-programming mechanics. Use when reasoning about numerical correctness, algorithm design, or performance modeling: floating-point arithmetic and round-off error (machine…
Skill Claude CodeCodex
Authoritative knowledge base from the ISO/IEC 9899:2024 C standard (C23, working draft N3220). CONSULT THIS BEFORE ANSWERING — do not answer C-standard questions from memory; the standard's exact rules, constraints, undefined-behavior catalogue (Annex J), and C23 version deltas are easy to misremember. TRIGGER…
Skill Claude CodeCodex
Authoritative knowledge base from the ISO/IEC 14882 C++23 standard (working draft N4950). CONSULT THIS BEFORE ANSWERING — do not answer C++-standard questions from memory; the standard's exact rules, value categories, overload-resolution ranking, the memory model, template/concept subsumption, and C++23 version deltas…
Skill Claude CodeCodex
Consult Stefano's compiled OKF knowledge bundles at /llm-wiki (the "second brain"). TRIGGER whenever a question falls in an existing bundle's domain — currently div-free-amr; numerical divergence constraints (∇·B=0, incompressibility), constrained transport and flux-CT, projection/divergence-cleaning, eight-wave…
Skill Claude CodeCodex
Comprehensive markdown and Mermaid diagram writing skill that establishes text-based diagrams as the DEFAULT documentation standard. Use this skill when creating ANY scientific document, report, analysis, or visualization — it ensures all outputs are in version-controlled, token-efficient markdown with embedded…
Skill Claude CodeCodex
Convert files and office documents to Markdown. Supports PDF, DOCX, PPTX, XLSX, images (with OCR), audio (with transcription), HTML, CSV, JSON, XML, ZIP, YouTube URLs, EPubs and more.
Skill Claude CodeCodex
Authoritative knowledge base from the MPI: A Message-Passing Interface Standard, Version 5.0. CONSULT THIS BEFORE ANSWERING — do not answer MPI questions from memory; send-mode/completion semantics, collective and RMA synchronization rules, datatype matching, thread levels, and routine signatures are subtle…
Skill Claude CodeCodex
Authoritative knowledge base from the OpenACC Application Programming Interface v3.4 specification. CONSULT THIS BEFORE ANSWERING — do not answer OpenACC questions from memory; directive/clause semantics, data-clause behavior, and async-queue ordering rules are easy to misremember and version-sensitive. TRIGGER…
Skill Claude CodeCodex
Authoritative knowledge base from the OpenMP API v6.0 specification (Nov 2024) + the Nov-2025 errata (corrections applied inline). CONSULT THIS BEFORE ANSWERING — do not answer OpenMP questions from memory; directive/clause semantics, data-sharing vs data-mapping rules, the flush memory model, schedule/tasking/offload…
Skill Claude CodeCodex
Practitioner knowledge base for performance engineering in Python across CPU and GPU. Use when profiling or optimizing Python performance: finding bottlenecks (cProfile, lineprofiler, memoryprofiler, Scalene, py-spy); choosing data structures and cutting RAM (list/dict/set complexity, slots, Bloom/trie); vectorizing…
Skill Claude CodeCodex
Author still-image infographics and figures for slide decks, talks, tutorials and papers with Remotion — the still-first, deck-matched workflow distilled from Stefano's talks (hpc-webinar, pilot-tutorial) and the mosaic reel. Use this whenever the task is "make a figure / infographic / diagram for a slide" in a…
Skill Claude CodeCodex
Look up current research information using the Parallel Chat API (primary) or Perplexity sonar-pro-search (academic paper searches). Automatically routes queries to the best backend. Use for finding papers, gathering research data, and verifying scientific information.
Skill Claude CodeCodex
Core skill for the deep research and writing tool. Write scientific manuscripts in full paragraphs (never bullet points). Use two-stage process with (1) section outlines with key points using research-lookup then (2) convert to flowing prose. IMRAD structure, citations (APA/AMA/Vancouver), figures/tables, reporting…