Build nvtop 3.2 from source (apt's 3.0.2 doesn't detect gfx1151)

Ubuntu 26.04 ships nvtop 3.0.2 via apt, which predates the gfx1151
sysfs detection improvements that landed in 3.2.x. Symptom: nvtop
runs but the iGPU doesn't appear.

Drop nvtop from the apt package list, add a from-source build step
that pulls a pinned NVTOP_VERSION, builds with -DAMDGPU_SUPPORT=ON,
and installs to /usr/local/bin (which wins over /usr/bin in PATH).
Idempotent: only rebuilds when the installed version doesn't match.

Run `sudo nvtop` to see container processes — non-root users only
see their own /proc/<pid>/fdinfo entries.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pyinfra/framework/README.md

@@ -80,6 +80,10 @@ Top of `deploy.py`:
   the version; find it at https://repo.radeon.com/amdgpu-install/.
 - `AMDGPU_TOP_VERSION` — bump when a newer release lands at
   https://github.com/Umio-Yasuno/amdgpu_top/releases.
+- `NVTOP_VERSION` — built from source because Ubuntu 26.04's apt
+  package (3.0.2) predates gfx1151 detection. Bump when a newer release
+  lands at https://github.com/Syllo/nvtop/releases. Run `sudo nvtop` to
+  see all GPU processes (non-root only sees the calling user's own).
 
 Compose images in
 `compose/{llama,vllm,ollama,openwebui,beszel,openlit,phoenix,openhands,homepage}.yml`

pyinfra/framework/deploy.py

@@ -32,6 +32,12 @@ AMDGPU_INSTALL_DEB = "amdgpu-install_7.2.3.70203-1_all.deb"
 AMDGPU_TOP_VERSION = "0.11.4-1"
 AMDGPU_TOP_DEB = f"amdgpu-top_without_gui_{AMDGPU_TOP_VERSION}_amd64.deb"
 
+# nvtop — htop-like GPU monitor with multi-vendor support. Ubuntu 26.04
+# ships 3.0.2 in apt, which predates the gfx1151 sysfs detection
+# improvements; we build 3.2.x from source instead. Verify at
+# https://github.com/Syllo/nvtop/releases.
+NVTOP_VERSION = "3.2.0"
+
 SSH_USER = host.data.get("ssh_user", "noise")
 MODELS_DIR = "/models"
 # /srv is the FHS-blessed location for "data and configuration for
@@ -52,14 +58,15 @@ apt.packages(
 # User basics + monitoring tools.
 apt.packages(
     name="Base CLI tools",
-    # radeontop intentionally omitted — it predates RDNA 3.5 / Strix Halo
-    # and just errors with "no VRAM support". amdgpu_top installed below.
+    # radeontop intentionally omitted — predates RDNA 3.5 / Strix Halo,
+    #   errors with "no VRAM support". amdgpu_top installed below.
+    # nvtop from apt intentionally omitted — Ubuntu 26.04 ships 3.0.2,
+    #   which doesn't pick up gfx1151. Built from source below instead.
     packages=[
         "tmux",
         "vim",
         "htop",
         "btop",
-        "nvtop",
         "git",
         "curl",
         "ca-certificates",
@@ -246,6 +253,39 @@ server.shell(
     _sudo=True,
 )
 
+# nvtop from source. Build deps + clone + cmake + install to /usr/local
+# (which wins over /usr/bin in $PATH). Idempotent — only rebuilds if
+# /usr/local/bin/nvtop's version doesn't match NVTOP_VERSION. Run
+# `sudo nvtop` to see container processes (otherwise non-root user
+# only sees its own /proc/<pid>/fdinfo entries).
+apt.packages(
+    name="nvtop build deps",
+    packages=[
+        "cmake",
+        "build-essential",
+        "libncurses-dev",
+        "libdrm-dev",
+        "libudev-dev",
+        "libsystemd-dev",
+    ],
+    _sudo=True,
+)
+server.shell(
+    name=f"Build & install nvtop {NVTOP_VERSION} from source",
+    commands=[
+        f"/usr/local/bin/nvtop --version 2>/dev/null | grep -q 'version {NVTOP_VERSION}' && exit 0; "
+        f"rm -rf /tmp/nvtop-build && "
+        f"git clone --depth 1 --branch {NVTOP_VERSION} "
+        f"https://github.com/Syllo/nvtop.git /tmp/nvtop-build && "
+        f"cmake -S /tmp/nvtop-build -B /tmp/nvtop-build/build "
+        f"-DAMDGPU_SUPPORT=ON -DCMAKE_INSTALL_PREFIX=/usr/local && "
+        f"make -C /tmp/nvtop-build/build -j && "
+        f"make -C /tmp/nvtop-build/build install && "
+        f"rm -rf /tmp/nvtop-build",
+    ],
+    _sudo=True,
+)
+
 # Group membership for /dev/kfd + /dev/dri access (needed for GPU passthrough
 # into containers, and for unprivileged host-side rocminfo).
 server.group(name="ensure render group", group="render", _sudo=True)