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Use when the guest disk image needs modification without a full rebuild. Mount with guestmount, add files, systemd services, kernel module config.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Use as the main entry for cosim debugging: gem5 crashes, assertions, hangs, timeouts, address translation faults, non-PASS test results, guest-side waits, and QEMU exits that may be secondary to gem5. Collect logs, preserve live state when needed, route to gem5 model references, and decide the first failing component.
Use when building gem5 or QEMU, checking build provenance, or preserving gem5 incremental builds across worktrees. Delegates to scripts/cosim_build.sh; never hand-roll Docker, scons, or QEMU make commands.
Use when delegating independent code review, design review, or focused bug investigation to an AI reviewer. Provides delegation templates and records reviewer evidence; higher-level review flow remains in cosim-gpu-review or cosim-gpu-rlcr-loop.
Use as the first step for non-trivial cosim testing, debugging, review, or iterative implementation tasks. Do not use for ordinary repository maintenance such as commit splitting, submodule pointer updates, author config, or documentation-only cleanup.
Use when you need to send commands to a running cosim guest. Console pipe interaction, 9p share mount, GPU status check, manual driver load.
Use when collecting, summarizing, auditing, or comparing cosim evidence from artifact directories, large logs, matrices, verdict files, build provenance, or prior conversation records; also use when reducing raw log reads or checking whether existing artifacts lose information. Enforces full raw evidence preservation, bounded reads, source attribution, compact tables, raw-read plans, coverage self-reporting, and unknown-event preservation before analysis.
| name | cosim-gpu-disk-image-edit |
| description | Use when the guest disk image needs modification without a full rebuild. Mount with guestmount, add files, systemd services, kernel module config. |
Modify the cosim guest disk image without rebuilding.
guestmount must be available (libguestfs-tools package)pgrep -af 'qemu-system-x86_64|cosim_launch.sh|run_cosim_tests.sh' && echo "STOP COSIM FIRST" || echo "OK"
find /tmp -maxdepth 1 -type d -name '*qemu-cosim*.session' -print
which guestmount || echo "Install: apt install libguestfs-tools"
gem5-resources/src/x86-ubuntu-gpu-ml/disk-image/x86-ubuntu-rocm70
Format: raw, GPT, partition 1 is the root filesystem.
DISK="./gem5-resources/src/x86-ubuntu-gpu-ml/disk-image/x86-ubuntu-rocm70"
MOUNTPOINT="/tmp/cosim-disk"
mkdir -p "$MOUNTPOINT"
guestmount -a "$DISK" -m /dev/sda1 --rw "$MOUNTPOINT"
Supported edit classes:
/etc/modprobe.d/.fdisk -l "$DISK" if guestmount cannot find /dev/sda1.Keep the concrete file contents in the task artifact or source patch. Do not embed large service templates or generated scripts in the skill itself.
Always unmount before starting QEMU:
guestunmount "$MOUNTPOINT"
sleep 2
ls "$MOUNTPOINT" 2>/dev/null && echo "Still mounted!" || echo "OK"
guestmount uses FUSE — no sudo needed