290 lines
15 KiB
Bash
Executable File
290 lines
15 KiB
Bash
Executable File
#!/usr/bin/env bats
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# Seam: the frank-medium mainline-llama.cpp root unit on dankserver.
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# frank-medium became a native llama.cpp service on 2026-09-16, replacing the
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# vllm-radiance replica pair + routing proxy that served this endpoint for a
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# day. What this seam pins is what the flags alone do not say: boot persistence
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# for a NATIVE runtime (no generated quadlet is involved), that BOTH cards work
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# on ONE model through a layer split with no collective in the path, that the
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# DFlash2 drafter is wired with a depth its block size actually allows, that the
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# runtime and payload are pinned rather than floated, and that one slot's KV
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# still fits a 32 GiB card beside the weights it holds.
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load helpers
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UNIT="$REPO_ROOT/scripts/frank-medium.service"
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SERVE="$REPO_ROOT/scripts/serve-frank-medium.sh"
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ENV_FILE="$REPO_ROOT/scripts/frank-medium.env"
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BUILD="$REPO_ROOT/scripts/build-llama-rdna4.sh"
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FETCH="$REPO_ROOT/scripts/download-frank-medium-gguf.sh"
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REMOTE_DEPLOY="$REPO_ROOT/scripts/deploy-remote.sh"
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# Measured constants (rocm-smi / HF blob sizes), used by the fit arithmetic.
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CARD_BYTES=34208743424 # one R9700 as rocm-smi reports it
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MODEL_BYTES=31457990112 # UD-Q8_K_XL target
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DRAFT_BYTES=2056414816 # DFlash2 Q8_0 drafter
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@test "frank-medium's unit, serve script, env and its build/fetch scripts exist" {
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[ -f "$UNIT" ]
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[ -f "$SERVE" ]
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[ -f "$ENV_FILE" ]
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[ -f "$BUILD" ]
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[ -f "$FETCH" ]
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}
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@test "frank-medium is boot-persistent, self-healing and unprivileged" {
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grep -q '^WantedBy=multi-user.target$' "$UNIT"
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grep -q '^Restart=on-failure$' "$UNIT"
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grep -q '^RestartSec=' "$UNIT"
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grep -q '^User=dank$' "$UNIT"
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grep -q '^LimitMEMLOCK=infinity$' "$UNIT"
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}
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@test "frank-medium runs the repo's own serve script with the repo's env" {
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grep -q '^ExecStart=/home/dank/serverAppConfigs/scripts/serve-frank-medium.sh$' "$UNIT"
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grep -q 'FRANK_MEDIUM_ENV_FILE=/home/dank/serverAppConfigs/scripts/frank-medium.env' "$UNIT"
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}
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@test "both R9700s serve ONE model, layer-split inside one process" {
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grep -q '^SPLIT_MODE=layer$' "$ENV_FILE"
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grep -q '^DEVICES=ROCm0,ROCm1$' "$ENV_FILE"
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# The split is a layer PAIR: the shares add up to the model's 65 blocks (one
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# -ts unit per layer) and ROCm1 -- the card that also carries the drafter and
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# the output layers -- takes the FEWER of the two. WHICH pair balances the
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# cards is the seam test's job, which recomputes it from this file; pinning a
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# literal here would only mean that re-measuring the balance breaks a test
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# about parallelism.
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local split_hi split_lo
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split_hi="$(sed -nE 's/^TENSOR_SPLIT=([0-9]+),([0-9]+)$/\1/p' "$ENV_FILE")"
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split_lo="$(sed -nE 's/^TENSOR_SPLIT=([0-9]+),([0-9]+)$/\2/p' "$ENV_FILE")"
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[ -n "$split_hi" ] && [ -n "$split_lo" ]
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[ $(( split_hi + split_lo )) -eq 65 ]
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[ "$split_lo" -lt "$split_hi" ]
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grep -q -- '--split-mode "$SPLIT_MODE"' "$SERVE"
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grep -q -- '--device "$DEVICES"' "$SERVE"
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grep -q -- '--tensor-split "$TENSOR_SPLIT"' "$SERVE"
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# Tensor split is the one shape this host cannot run: it needs a cross-card
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# collective, and the second card cannot dispatch one (see the env file).
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! grep -q '^SPLIT_MODE=tensor$' "$ENV_FILE"
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}
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@test "the iGPU is hidden so no layer can land on system RAM" {
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grep -q '^HIP_VISIBLE_DEVICES=0,1$' "$ENV_FILE"
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grep -q '^export HIP_VISIBLE_DEVICES$' "$SERVE"
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}
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@test "the drafter runs in a chain with the draftless n-gram matcher" {
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# The chain is the measured winner (see the runbook's A/B): free where the
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# matcher cannot match, ~2.6x the drafter alone on prompt-echo traffic. A
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# bare `draft-dflash` here would silently give that up.
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grep -qE '^SPEC_TYPE=draft-dflash,ngram-mod$' "$ENV_FILE"
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grep -q '^DRAFT_MODEL_FILE=Qwen3\.8-27B-DFlash2-Q8_0\.gguf$' "$ENV_FILE"
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grep -q -- '--spec-type "$SPEC_TYPE"' "$SERVE"
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grep -q -- '--spec-draft-model "$DRAFT_MODEL"' "$SERVE"
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# ngram-mod's own window -- and only when the type asks for it, so a pure
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# DFlash or MTP configuration is not quietly handed n-gram parameters.
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grep -q '^SPEC_NGRAM_N_MATCH=24$' "$ENV_FILE"
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grep -q '^SPEC_NGRAM_N_MIN=48$' "$ENV_FILE"
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grep -q '^SPEC_NGRAM_N_MAX=64$' "$ENV_FILE"
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grep -q -- '--spec-ngram-mod-n-match "$SPEC_NGRAM_N_MATCH"' "$SERVE"
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grep -q -- '--spec-ngram-mod-n-min "$SPEC_NGRAM_N_MIN"' "$SERVE"
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grep -q -- '--spec-ngram-mod-n-max "$SPEC_NGRAM_N_MAX"' "$SERVE"
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python3 -c "
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lines = open('$SERVE').read().splitlines()
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guard = next(i for i, l in enumerate(lines) if '*ngram*' in l)
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indent = len(lines[guard]) - len(lines[guard].lstrip())
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end = next(i for i in range(guard + 1, len(lines))
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if lines[i].strip() == 'fi' and len(lines[i]) - len(lines[i].lstrip()) == indent)
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assert '--spec-ngram-mod-n-match' in chr(10).join(lines[guard:end]), 'ngram flags must sit in the ngram branch'
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"
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# DFlash2 drafts into a block of 8, so at most 7 draft tokens per
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# verification step -- llama.cpp asserts n_max <= block_size - 1.
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local n_max
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n_max="$(sed -nE 's/^SPEC_DRAFT_N_MAX=([0-9]+)$/\1/p' "$ENV_FILE")"
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[ -n "$n_max" ] && [ "$n_max" -ge 1 ] && [ "$n_max" -le 7 ]
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}
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@test "a draft MODEL is passed only for DFlash types, never for MTP" {
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# MTP builds its context against the TARGET model (its head lives in that
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# GGUF). Passing --spec-draft-model alongside it points the draft context at
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# the drafter's file, which has no MTP layers, and the server dies at load:
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# context type MTP requested but model doesn't contain MTP layers
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# failed to create MTP context
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# So the flag must appear exactly once, inside the dflash branch.
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python3 -c "
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lines = open('$SERVE').read().splitlines()
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guard = next(i for i, l in enumerate(lines) if '*dflash*' in l)
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indent = len(lines[guard]) - len(lines[guard].lstrip())
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end = next(i for i in range(guard + 1, len(lines))
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if lines[i].strip() == 'fi' and len(lines[i]) - len(lines[i].lstrip()) == indent)
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block = chr(10).join(lines[guard:end])
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assert '--spec-draft-model' in block, 'the dflash branch must pass the draft model'
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assert sum(l.count('--spec-draft-model') for l in lines) == 1, 'only that branch may pass it'
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print('draft-model wiring ok')
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"
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}
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@test "the runtime is pinned to a commit and to gfx1201 alone" {
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# A floating ref would silently move the service between engine versions,
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# and an unpinned arch would build for a sibling GPU that loads and then
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# segfaults on these cards.
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grep -Eq '^LLAMA_REF="\$\{LLAMA_REF:-[0-9a-f]{40}\}"$' "$BUILD"
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grep -Eq '^HIP_ARCH="\$\{HIP_ARCH:-gfx1201\}"$' "$BUILD"
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grep -q 'GGML_HIP=ON' "$BUILD"
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grep -q 'frank-medium.env' "$SERVE"
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}
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@test "the payload is fetched resumably and verified by size" {
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grep -q 'UD-Q8_K_XL\.gguf' "$FETCH"
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grep -q 'Qwen3\.8-27B-DFlash2-Q8_0\.gguf' "$FETCH"
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grep -q 'curl -fL -C -' "$FETCH"
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grep -q 'verifying sizes' "$FETCH"
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}
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@test "both cards stay balanced and keep the operator's 1.5 GiB floor" {
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local ctx parallel cache_k cache_v split_hi split_lo batch ubatch
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ctx="$(sed -nE 's/^CTX_SIZE=([0-9]+)$/\1/p' "$ENV_FILE")"
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parallel="$(sed -nE 's/^PARALLEL=([0-9]+)$/\1/p' "$ENV_FILE")"
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cache_k="$(sed -nE 's/^CACHE_TYPE_K=(.+)$/\1/p' "$ENV_FILE")"
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cache_v="$(sed -nE 's/^CACHE_TYPE_V=(.+)$/\1/p' "$ENV_FILE")"
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split_hi="$(sed -nE 's/^TENSOR_SPLIT=([0-9]+),([0-9]+)$/\1/p' "$ENV_FILE")"
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split_lo="$(sed -nE 's/^TENSOR_SPLIT=([0-9]+),([0-9]+)$/\2/p' "$ENV_FILE")"
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batch="$(sed -nE 's/^BATCH_SIZE=([0-9]+)$/\1/p' "$ENV_FILE")"
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ubatch="$(sed -nE 's/^UBATCH_SIZE=([0-9]+)$/\1/p' "$ENV_FILE")"
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[ -n "$ctx" ] && [ -n "$parallel" ] && [ -n "$cache_k" ] && [ -n "$cache_v" ]
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[ -n "$split_hi" ] && [ -n "$split_lo" ] && [ -n "$batch" ] && [ -n "$ubatch" ]
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[ "$parallel" -ge 1 ]
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[ "$batch" -ge "$ubatch" ]
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[ "$cache_k" = "f16" ] && [ "$cache_v" = "f16" ]
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# Per card, calibrated against rocm-smi at the 35:30 / ctx 262144 / batch
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# 6144 x ubatch 512 / two slots / DFlash2 point, where the two cards
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# measured 6.44 / 6.90 GiB free. The fit reproduces card 1 to 0.00 GiB
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# and card 0 to 0.86 GiB at that point; it is a GATE, not a meter -- the
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# deployed point is re-measured on the host after every split/ctx/batch
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# move (the 2026-09-17 move to 36:29 / 327680 / mmproj is the current one).
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#
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# card 0 = its share of the weights and of the KV (qwen35 spends KV on
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# its 16 full-attention layers only: 2 (K,V) x 4 heads x 256 dim
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# x 2 B = 64 KiB per token at f16) plus ~1.4e6 B per ubatch unit
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# of compute buffers
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# card 1 = the same for its own share, plus the WHOLE drafter: its weights
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# (2.06e9 B), its KV -- BOUNDED BY ITS SLIDING WINDOW, so
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# 20480 B/pos x 2048 positions rather than the context -- and
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# ~2.5e6 B per ubatch unit of buffers on top of a ~0.89 GiB
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# constant. Its buffers are the heavier ones because it holds the
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# output layers and the drafter's graphs.
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#
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# BOTH ubatch coefficients are measured at the deployed shape, from the
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# 1536 -> 512 move: 1.30 GiB on card 0 and 2.41 GiB on card 1. That
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# asymmetry is why shrinking the batch moved the balance toward card 1 and
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# cost card 0 a layer -- the split and the batch cannot be chosen apart.
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#
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# The layer it charges for is the AVERAGE (0.70 GiB: 31.46e9 of weights plus
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# 16 GiB of KV over 65 layers). This stack is a hybrid, so real steps vary
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# around that -- 0.43 GiB for a DeltaNet layer, 1.43 GiB for a full-attention
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# one -- which makes the drift check below CONSERVATIVE: it overstates the gap
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# a one-layer move creates, and so trips on moves a measurement might bless.
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# That is the intent: moving the split means re-measuring, not re-arguing.
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#
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# The slack is one DeltaNet layer, rounded up. At this shape the balance
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# cannot be tuned finer than one layer, so 35:30's 0.46 GiB gap IS the
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# achievable optimum and a tighter slack would only reject it.
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#
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# What this model cannot see is CONTIGUITY -- the mechanism by which the
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# DSpark-era 8192/2048 failed, a 2020 MiB pp buffer that found no room while
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# every total looked fine. Total bytes are not the whole story for one big
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# allocation.
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local kv_pos=65536 draft_kv_pos=20480 floor slack
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local card_hi card_lo diff
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local mmproj=931145888 # mmproj-BF16.gguf, autoloaded onto the primary device
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floor=$(( 1536 * 1024 * 1024 )) # 1.5 GiB per card
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# One DeltaNet layer at the old shape was the finest the balance could be
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# tuned, so the slack used to be one DeltaNet layer. The 2026-09-17 move
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# to 36:29 at ctx 327680 traded balance for headroom on the drafter card
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# (the balance point at this context is 34:31, gap 0.11 GiB; 36:29's gap
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# is 3.15 GiB BY CONSTRUCTION, and the operator chose it). The slack is
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# that gap, rounded up: tighter rejects the deployed split, looser stops
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# being a balance check at all.
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slack=$(( 3225 * 1024 * 1024 ))
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card_hi=$(( MODEL_BYTES * split_hi / (split_hi + split_lo) \
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+ kv_pos * ctx * split_hi / (split_hi + split_lo) \
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+ 381898377 \
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+ mmproj \
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+ 1363 * 1024 * ubatch ))
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card_lo=$(( MODEL_BYTES * split_lo / (split_hi + split_lo) \
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+ DRAFT_BYTES \
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+ kv_pos * ctx * split_lo / (split_hi + split_lo) \
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+ draft_kv_pos * (ctx < 2048 ? ctx : 2048) \
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+ 955046413 \
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+ 2468 * 1024 * ubatch ))
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[ "$card_hi" -le $(( CARD_BYTES - floor )) ]
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[ "$card_lo" -le $(( CARD_BYTES - floor )) ]
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diff=$(( card_hi - card_lo )); [ "$diff" -ge 0 ] || diff=$(( -diff ))
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[ "$diff" -le "$slack" ]
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# ...and the window may not wander far past what the checkpoint was
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# trained for (262144; the GGUF carries no rope scaling, so the extra 65k
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# extrapolates on the base rope).
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[ "$ctx" -le 327680 ]
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}
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@test "vision is enabled: the BF16 projector loads with the model" {
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grep -q '^NO_MMPROJ=0$' "$ENV_FILE"
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grep -q '^MM_PROJ_FILE=mmproj-BF16.gguf$' "$ENV_FILE"
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# Explicit flag, not autoload: this build starts text-only without it,
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# and refuses to start without the projector file, so a missing file is
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# a deploy error, not a silent text-only server.
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grep -q -- '--mmproj "$MM_PROJ"' "$SERVE"
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grep -q 'vision is enabled but the projector is missing' "$SERVE"
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# And the download script fetches and byte-verifies it.
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grep -q '^MM_PROJ_SIZE=931145888$' "$FETCH"
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grep -q -- 'check "$MODEL_DIR/$MM_PROJ_FILE" "$MM_PROJ_SIZE"' "$FETCH"
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}
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@test "the fleet endpoint and the predecessor's sampler defaults survive" {
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grep -q '^ALIAS=frank-medium$' "$ENV_FILE"
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grep -q '^LISTEN_PORT=7770$' "$ENV_FILE"
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grep -q -- '--alias "$ALIAS"' "$SERVE"
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grep -q -- '--port "$LISTEN_PORT"' "$SERVE"
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grep -q -- '--host "$BIND_ADDR"' "$SERVE"
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# Prometheus scrapes this endpoint for LLM fleet metrics.
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grep -q -- '--metrics' "$SERVE"
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# Requests that send no sampler fields get these instead of an error.
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grep -q '^TEMPERATURE=0.7$' "$ENV_FILE"
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grep -q '^TOP_P=0.95$' "$ENV_FILE"
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}
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@test "the deploy handler installs the root unit and refuses a missing payload" {
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grep -q 'deploy_llm_medium' "$REMOTE_DEPLOY"
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grep -q 'relink_unit frank-medium' "$REMOTE_DEPLOY"
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grep -q 'systemctl enable frank-medium.service' "$REMOTE_DEPLOY"
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grep -q 'systemctl restart frank-medium.service' "$REMOTE_DEPLOY"
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grep -q '127.0.0.1:7770/health' "$REMOTE_DEPLOY"
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grep -q 'build-llama-rdna4.sh' "$REMOTE_DEPLOY"
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grep -q 'download-frank-medium-gguf.sh' "$REMOTE_DEPLOY"
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grep -q '\[\[ "$missing" -eq 0 \]\] || return 1' "$REMOTE_DEPLOY"
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}
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@test "the deploy handler retires the vLLM quadlets and frees the port they held" {
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grep -q 'retire_vllm_medium_quadlets' "$REMOTE_DEPLOY"
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grep -q 'systemctl --user stop frank-medium-a.service frank-medium-b.service' "$REMOTE_DEPLOY"
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grep -q 'wait_port_free 7770' "$REMOTE_DEPLOY"
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# No image left to tag: the runtime is a native binary now.
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# ...and no image work or quadlet install of the predecessor survives.
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! grep -q 'install_quadlet frank-medium-a' "$REMOTE_DEPLOY"
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! grep -q 'podman tag docker.io/stilldeadcode' "$REMOTE_DEPLOY"
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}
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@test "the retired vLLM deployment is gone from the repo, not merely unmapped" {
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[ ! -d "$REPO_ROOT/dankserver/frank-medium" ]
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[ ! -f "$REPO_ROOT/tests/frank_medium_quadlet.bats" ]
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# ...and the archive is present, so the two assertions above cannot pass
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# because a path went missing rather than because it stayed missing.
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[ -f "$REPO_ROOT/dankserver/.AGENTTRASH/20260916-vllm-radiance/frank-medium-a.container" ]
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[ -f "$REPO_ROOT/dankserver/.AGENTTRASH/20260916-vllm-radiance/radiance-entrypoint.sh" ]
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}
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@test "the serve script refuses to start on an incomplete host" {
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grep -q 'frank-medium: missing\|missing executable runtime\|missing or unreadable' "$SERVE"
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grep -q 'missing or unreadable target model' "$SERVE"
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grep -q 'missing or unreadable draft model' "$SERVE"
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}
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