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Split navigation into Boards and Apps sections.
Move HPL overview from boards/ to apps/ and update links across the site. Co-authored-by: Cursor <cursoragent@cursor.com>
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‎README.md‎

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@@ -4,12 +4,12 @@ OpenSolvers explores how open-source scientific software runs on real hardware
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We're benchmarking **High Performance Linpack (HPL)** across several consumer RISC-V boards, comparing stock and architecture-tuned builds through the [EESSI](https://www.eessi.io/) stack. On the VisionFive 2, a SiFive U74-tuned OpenBLAS lifts HPL from **3.13** to **5.28 GFLOP/s** (**1.69×**) — end-to-end via EESSI and EasyBuild.
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See the [HPL results overview](boards/hpl.html) for a cross-board summary.
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See the [HPL results overview](apps/hpl.html) for a cross-board summary.
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## Boards
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- **[StarFive VisionFive 2](boards/VisionFive2.html)** — JH7110 SoC, 4× SiFive U74 (`rv64gc`). EESSI HPL **3.13 → 5.28 GFLOP/s** with U74 OpenBLAS tuning.
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- **[OrangePi RV2](boards/RV2.html)** — Ky X1 SoC, 8× SpacemiT X60. Native-arch HPL **7.38 GFLOP/s** (EESSI: DNF, RVV bug in OpenBLAS 0.3.30).
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- **[BananaPi F3](boards/F3.html)** — SpacemiT K1 SoC, 8× SpacemiT X60. HPL benchmarking in progress (EESSI: DNF, RVV bug in OpenBLAS 0.3.30).
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Use the menu above to jump straight to a board page.
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Use the menu above to jump to a board or app page.

‎_config.yml‎

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@@ -5,9 +5,15 @@ description: RISC-V learnings and fun
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navigation:
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- title: Home
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url: /
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navigation_boards:
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- title: VisionFive 2
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url: /boards/VisionFive2.html
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- title: OrangePi RV2
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url: /boards/RV2.html
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- title: BananaPi F3
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url: /boards/F3.html
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navigation_apps:
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- title: HPL
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url: /apps/hpl.html

‎_includes/header.html‎

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@@ -3,18 +3,52 @@ <h1 class="project-name">{{ site.title | default: "OpenSolvers" }}</h1>
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<h2 class="project-tagline">{{ site.description | default: "RISC-V learnings and fun" }}</h2>
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<nav class="site-nav" aria-label="Main navigation">
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<ul class="site-nav-list">
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{% for item in site.navigation %}
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<li class="site-nav-item">
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<a
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href="{% if item.external %}{{ item.url }}{% else %}{{ item.url | relative_url }}{% endif %}"
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class="site-nav-link{% if item.external %} site-nav-link--external{% endif %}{% if page.url == item.url %} is-active{% endif %}"
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{% if item.external %}target="_blank" rel="noopener noreferrer"{% endif %}
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>
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{{ item.title }}
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</a>
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</li>
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{% endfor %}
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</ul>
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<div class="site-nav-groups">
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<ul class="site-nav-list">
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{% for item in site.navigation %}
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<li class="site-nav-item">
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<a
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href="{% if item.external %}{{ item.url }}{% else %}{{ item.url | relative_url }}{% endif %}"
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class="site-nav-link{% if item.external %} site-nav-link--external{% endif %}{% if page.url == item.url %} is-active{% endif %}"
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{% if item.external %}target="_blank" rel="noopener noreferrer"{% endif %}
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>
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{{ item.title }}
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</a>
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</li>
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{% endfor %}
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</ul>
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<div class="site-nav-group">
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<span class="site-nav-label">Boards</span>
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<ul class="site-nav-list">
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{% for item in site.navigation_boards %}
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<li class="site-nav-item">
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<a
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href="{{ item.url | relative_url }}"
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class="site-nav-link{% if page.url == item.url %} is-active{% endif %}"
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>
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{{ item.title }}
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</a>
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</li>
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{% endfor %}
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</ul>
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</div>
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<div class="site-nav-group">
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<span class="site-nav-label">Apps</span>
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<ul class="site-nav-list">
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{% for item in site.navigation_apps %}
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<li class="site-nav-item">
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<a
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href="{{ item.url | relative_url }}"
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class="site-nav-link{% if page.url == item.url %} is-active{% endif %}"
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>
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{{ item.title }}
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</a>
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</li>
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{% endfor %}
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</ul>
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</div>
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</div>
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</nav>
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</header>

boards/hpl.md renamed to apps/hpl.md

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| Board | Cores | Before | After |
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| ----- | ----- | ------ | ----- |
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| [StarFive VisionFive 2](VisionFive2.html) | 4× SiFive U74 | 3.13 GFLOP/s | **5.28 GFLOP/s** |
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| [Orange Pi RV2](RV2.html) | 8× SpacemiT X60 | FAILED (`nan`) | **10.53 GFLOP/s** |
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| [Banana Pi F3](F3.html) | 8× SpacemiT X60 | FAILED (`nan`) | — |
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| [StarFive VisionFive 2](../boards/VisionFive2.html) | 4× SiFive U74 | 3.13 GFLOP/s | **5.28 GFLOP/s** |
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| [Orange Pi RV2](../boards/RV2.html) | 8× SpacemiT X60 | FAILED (`nan`) | **10.53 GFLOP/s** |
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| [Banana Pi F3](../boards/F3.html) | 8× SpacemiT X60 | FAILED (`nan`) | — |
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**Before** — stock EESSI OpenBLAS 0.3.30 on each board.
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‎assets/css/style.scss‎

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margin-top: 1.25rem;
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}
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.site-nav-groups {
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display: flex;
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flex-wrap: wrap;
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justify-content: center;
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align-items: center;
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gap: 1rem 1.5rem;
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}
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.site-nav-group {
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display: flex;
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flex-wrap: wrap;
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align-items: center;
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justify-content: center;
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gap: 0.5rem 0.75rem;
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}
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.site-nav-label {
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color: rgba(255, 255, 255, 0.65);
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font-size: 0.8rem;
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font-weight: 700;
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letter-spacing: 0.06em;
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text-transform: uppercase;
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}
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.site-nav-list {
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display: flex;
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flex-wrap: wrap;

‎boards/F3.md‎

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| --- | ------ | ----- |
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| HPL | DNF | — |
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Benchmarking in progress. **Before** (EESSI) DNF due to an RVV bug in OpenBLAS 0.3.30. See the [cross-board HPL overview](hpl.html).
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Benchmarking in progress. **Before** (EESSI) DNF due to an RVV bug in OpenBLAS 0.3.30. See the [HPL app overview](../apps/hpl.html).

‎boards/RV2.md‎

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## HPL via EESSI
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See also the [cross-board HPL overview](hpl.html).
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See also the [HPL app overview](../apps/hpl.html).
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Unlike the scalar VisionFive 2, the X60 already dispatches OpenBLAS's upstream **RVV** `RISCV64_ZVL256B` kernels from the stock EESSI stack — but OpenBLAS **0.3.30** has a bug in `gemv_n` that zeroes an uninitialized vector register, so stock EESSI **HPL fails with residual `nan`** (it can still report a plausible ~8.5 GFLOP/s; only the residual check reveals the answer is wrong).
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‎boards/VisionFive2.md‎

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## HPL via EESSI
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See also the [cross-board HPL overview](hpl.html).
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See also the [HPL app overview](../apps/hpl.html).
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End-to-end benchmark on real VisionFive 2 hardware using [EESSI](https://www.eessi.io/) `2025.06-001` on the RISC-V dev stack [`dev.eessi.io/riscv`](https://www.eessi.io/docs/repositories/dev.eessi.io-riscv/). Problem size **N=10000**, block size **NB=192**, **2×2** process grid (4 MPI ranks).
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