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Add Videos page with YouTube catalog and improve site SEO.
Introduce a data-driven videos page for walkthroughs, link the U74 HPL video from the homepage and VisionFive 2 page, and add canonical URL, structured data, robots.txt, and page-level descriptions. Co-authored-by: Cursor <cursoragent@cursor.com>
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‎README.md‎

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---
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title: OpenSolvers — RISC-V scientific software benchmarks
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description: Benchmark notes for open-source scientific libraries and applications on consumer RISC-V boards — HPL, BLAS, Quantum ESPRESSO, GROMACS, EESSI, and FlexiBLAS backend swaps.
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---
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OpenSolvers explores how open-source scientific software runs on real hardware — starting with **RISC-V** boards and the tools that make that practical (EESSI, OpenBLAS, and friends). This site documents what we learn along the way.
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## Videos
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Walkthroughs on our [YouTube channel](https://www.youtube.com/@opensolvers) — see the full list on the [Videos](videos.html) page.
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- **[1.69× HPL on VisionFive 2](https://www.youtube.com/watch?v=DS4IlzsEq9w)** — U74-tuned OpenBLAS via EESSI and FlexiBLAS (3.13 → 5.28 GFLOP/s)
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## What we're working on
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We benchmark **scientific libraries** and **applications** on consumer RISC-V boards through the [EESSI](https://www.eessi.io/) stack — from BLAS kernels up to full app runs — swapping fixed OpenBLAS builds via FlexiBLAS without rebuilding downstream code.

‎_config.yml‎

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theme: jekyll-theme-cayman
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title: OpenSolvers
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description: RISC-V learnings and fun
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description: Open-source scientific software benchmarks on RISC-V boards — HPL, BLAS, Quantum ESPRESSO, GROMACS, and library-level probes via EESSI.
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url: https://www.opensolvers.com
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lang: en
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twitter:
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card: summary_large_image
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logo: /assets/images/compute-backends.svg
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navigation:
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- title: Home
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url: /
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- title: Videos
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url: /videos.html
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- title: YouTube
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url: https://www.youtube.com/@opensolvers
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external: true
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navigation_boards:
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- title: VisionFive 2
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url: /scientific-libs/fftw.html
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- title: ScaLAPACK
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url: /scientific-libs/scalapack.html
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defaults:
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- scope:
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path: ""
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values:
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layout: default
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- scope:
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path: "boards"
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values:
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layout: default
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- scope:
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path: "apps"
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values:
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layout: default
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- scope:
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path: "scientific-libs"
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values:
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layout: default

‎_data/videos.yml‎

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# YouTube videos — add new entries here (newest first).
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- id: u74-hpl-visionfive2
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title: "1.69× HPL on RISC-V: U74-Tuned OpenBLAS on VisionFive 2 (EESSI)"
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description: >
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How we lifted HPL on a StarFive VisionFive 2 from 3.13 to 5.28 GFLOP/s without
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rebuilding HPL — by swapping in a SiFive U74-tuned OpenBLAS kernel through EESSI
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and FlexiBLAS.
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youtube_id: DS4IlzsEq9w
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date: 2026-07-18
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duration: PT4M38S
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boards:
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- VisionFive 2
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topics:
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- HPL
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- OpenBLAS
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- EESSI
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- FlexiBLAS
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related_pages:
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- title: VisionFive 2 board notes
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url: /boards/VisionFive2.html
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- title: HPL overview
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url: /apps/hpl.html

‎_includes/head-custom.html‎

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{% assign site_url = site.url | default: "https://www.opensolvers.com" | append: "" %}
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<meta property="og:site_name" content="{{ site.title | default: 'OpenSolvers' }}">
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<meta name="author" content="OpenSolvers">
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<script type="application/ld+json">
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{
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"@context": "https://schema.org",
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"@type": "Organization",
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"name": "OpenSolvers",
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"url": "{{ site_url }}",
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"description": {{ site.description | jsonify }},
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"sameAs": [
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"https://www.youtube.com/@opensolvers",
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"https://github.com/opensolvers"
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]
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}
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</script>
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{% if page.url == '/' or page.url == '/index.html' %}
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<script type="application/ld+json">
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{
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"@context": "https://schema.org",
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"@type": "WebSite",
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"name": "OpenSolvers",
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"url": "{{ site_url }}",
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"description": {{ site.description | jsonify }},
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"publisher": {
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"@type": "Organization",
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"name": "OpenSolvers"
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}
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}
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</script>
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{% endif %}

‎_includes/video-grid.html‎

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{% assign videos = include.videos | default: site.data.videos %}
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{% if videos and videos.size > 0 %}
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<div class="video-grid">
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{% for video in videos %}
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<article class="video-card" id="{{ video.id }}">
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<div class="video-embed">
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<iframe
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src="https://www.youtube-nocookie.com/embed/{{ video.youtube_id }}"
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title="{{ video.title | escape }}"
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loading="lazy"
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allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
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allowfullscreen
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></iframe>
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</div>
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<div class="video-card-body">
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<h3 class="video-card-title">
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<a href="https://www.youtube.com/watch?v={{ video.youtube_id }}" rel="noopener noreferrer">
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{{ video.title }}
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</a>
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</h3>
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{% if video.date %}
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<p class="video-card-meta"><time datetime="{{ video.date }}">{{ video.date }}</time></p>
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{% endif %}
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{% if video.description %}
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<p class="video-card-desc">{{ video.description }}</p>
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{% endif %}
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{% if video.boards %}
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<p class="video-card-tags">
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{% for board in video.boards %}
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<span class="video-tag">{{ board }}</span>
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{% endfor %}
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</p>
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{% endif %}
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{% if video.related_pages %}
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<ul class="video-card-links">
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{% for link in video.related_pages %}
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<li><a href="{{ link.url | relative_url }}">{{ link.title }}</a></li>
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{% endfor %}
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</ul>
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{% endif %}
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</div>
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<script type="application/ld+json">
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{
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"@context": "https://schema.org",
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"@type": "VideoObject",
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"name": {{ video.title | jsonify }},
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"description": {{ video.description | strip | jsonify }},
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"thumbnailUrl": "https://img.youtube.com/vi/{{ video.youtube_id }}/maxresdefault.jpg",
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"uploadDate": "{{ video.date }}",
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"duration": "{{ video.duration | default: '' }}",
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"embedUrl": "https://www.youtube.com/embed/{{ video.youtube_id }}",
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"contentUrl": "https://www.youtube.com/watch?v={{ video.youtube_id }}",
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"publisher": {
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"@type": "Organization",
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"name": "OpenSolvers",
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"url": "{{ site.url | default: 'https://www.opensolvers.com' }}"
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}
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}
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</script>
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</article>
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{% endfor %}
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</div>
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{% else %}
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<p>No videos yet.</p>
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{% endif %}

‎apps/hpl.md‎

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---
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title: HPL results on RISC-V boards
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description: High Performance Linpack cross-board summary — VisionFive 2 U74 tuning, Orange Pi RV2 and Banana Pi F3 X60 fixes, EESSI stack, and FlexiBLAS backend swaps.
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---
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# HPL results overview
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Cross-board summary of **High Performance Linpack (HPL)** on consumer RISC-V hardware through the EESSI stack. Configs and an A/B runner (`run-hpl-ab.sh`) are in [opensolvers/benchmarks/hpl](https://github.com/opensolvers/benchmarks/tree/main/hpl).

‎assets/css/style.scss‎

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font-size: 0.8em;
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opacity: 0.85;
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}
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.video-grid {
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display: grid;
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gap: 2rem;
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margin: 1.5rem 0 2rem;
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}
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.video-card {
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border: 1px solid #e9ebec;
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border-radius: 0.5rem;
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overflow: hidden;
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box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
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}
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.video-embed {
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position: relative;
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width: 100%;
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aspect-ratio: 16 / 9;
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background: #111;
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}
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.video-embed iframe {
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position: absolute;
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inset: 0;
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width: 100%;
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height: 100%;
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border: 0;
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}
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.video-card-body {
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padding: 1.25rem 1.5rem 1.5rem;
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}
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.video-card-title {
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margin: 0 0 0.35rem;
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font-size: 1.25rem;
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}
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.video-card-title a {
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color: #155799;
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text-decoration: none;
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}
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.video-card-title a:hover {
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text-decoration: underline;
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}
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.video-card-meta {
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margin: 0 0 0.75rem;
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color: #606c71;
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font-size: 0.9rem;
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}
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.video-card-desc {
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margin: 0 0 0.75rem;
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line-height: 1.55;
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}
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.video-card-tags {
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margin: 0 0 0.75rem;
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}
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.video-tag {
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display: inline-block;
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margin: 0 0.35rem 0.35rem 0;
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padding: 0.2rem 0.55rem;
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border-radius: 0.25rem;
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background: #f3f6fa;
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color: #155799;
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font-size: 0.85rem;
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font-weight: 600;
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}
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.video-card-links {
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margin: 0;
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padding-left: 1.25rem;
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}
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.video-card-links li {
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margin: 0.25rem 0;
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}

‎boards/VisionFive2.md‎

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---
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title: StarFive VisionFive 2 — SiFive U74 benchmarks
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description: VisionFive 2 (JH7110) notes — scalar U74 OpenBLAS tuning, HPL 3.13 to 5.28 GFLOP/s via EESSI and FlexiBLAS, compute paths, and EESSI reproduction steps.
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---
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The StarFive VisionFive 2 board is built around the StarFive **JH7110** SoC: four **SiFive U74** cores at 1.5 GHz (`rv64gc`, scalar — no vector extension), integrated **IMG BXE-4-32 MC1** GPU (OpenCL 3.0 / Vulkan 1.2), 8 GB RAM, typically running Ubuntu 24.04.
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![](vf2.jpg)
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## Video walkthrough
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**[1.69× HPL on RISC-V: U74-Tuned OpenBLAS on VisionFive 2 (EESSI)](https://www.youtube.com/watch?v=DS4IlzsEq9w)** — [all videos](../videos.html)
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## Compute paths on this board
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The JH7110 has **scalar** CPU cores (U74-tuned OpenBLAS) and an integrated **GPU** — no RVV vector unit or vendor matrix extension.

‎robots.txt‎

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User-agent: *
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Allow: /
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Sitemap: https://www.opensolvers.com/sitemap.xml

‎videos.md‎

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---
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title: Videos
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description: OpenSolvers walkthrough videos — RISC-V benchmarks, EESSI, OpenBLAS tuning, and application results on consumer boards.
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permalink: /videos.html
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---
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OpenSolvers videos on our [YouTube channel](https://www.youtube.com/@opensolvers). More walkthroughs will be added here as they are published.
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{% include video-grid.html %}

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