Swap frank-default-large to DFlash2 on Vulkan (PR #27342)
Replace the retired CIRU ROCmFPX runtime with upstream llama.cpp PR #27342 DFlash2 on the Vulkan backend: - Target: unsloth Qwen3.8-27B-UD-Q8_K_XL.gguf (31.4 GB, already on disk) - Drafter: z-lab Qwen3.8-27B-DFlash2-Q4_K_M.gguf (block size 8, top-k 16) - Runtime: /home/dank/llama.cpp-dflash2/build-dflash2/bin/llama-server (GGML_VULKAN=ON; HIP lacks TOP_K so the stack runs on Vulkan0/RADV) - spec: --spec-type draft-dflash --spec-draft-n-max 8 (clamps to 7) Validated 2026-08-21 on scratch port 52626: mean acceptance 5.27, health + reasoning completion OK. Archive the retired CIRU .env/.serve script in .AGENTTRASH. Update deployment.md, index.md, AGENTS.md; add docs/dflash2-large-vulkan.md.
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Frank
@@ -1,51 +1,36 @@
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# Tunables for frank-default-large (CIRU llama.cpp, dankclaw, Strix Halo
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# gfx1151).
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# Tunables for frank-default-large (upstream llama.cpp PR #27342 DFlash2,
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# Vulkan backend, dankclaw, Strix Halo gfx1151).
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#
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# Runtime: the PromptForge llama-server built from ciru-ai/ROCmFPX tag
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# qwen3.8-activefpx-promptforge-v2.3 serving
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# jcbtc/Qwen3.8-27B-CIRU-ActiveFPX-PromptForge (v2). ActiveFPX compact
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# GGUF with PromptForge companions for CIRU DualView prompt acceleration and
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# native depth-4 MTP. Alias frank-default-large, port 52625.
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# Runtime: llama.cpp PR #27342 built with GGML_VULKAN=ON serving
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# unsloth/Qwen3.8-27B-UD-Q8_K_XL (target) with a z-lab DFlash2 drafter
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# (Qwen3.8-27B-DFlash2-Q4_K_M). Target at 31.4 GB, DFlash2 drafter at 2.0 GB.
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# Alias frank-default-large, port 52625.
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#
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# This runtime replaced the retired vLLM service that previously occupied
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# this slot. See docs/ciru-activefpx-promptforge.md.
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# DFlash2 runs on the Vulkan (RADV) backend. Its candidate selector needs
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# TOP_K + ARGMAX, which the HIP backend does not implement. This replaced
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# the CIRU HIP runtime on 2026-08-21. See docs/dflash2-large-vulkan.md.
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#
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# WARNING: do not name any variable TEMP, HOST, or GPU_MAX_HEAP_SIZE. The ROCm
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# HIP runtime reads those bare env vars (see the 2026-08-13 TEMP incident).
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# llama.cpp reads --host/--port/--temp as CLI flags, never as env vars.
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# WARNING: do not name any variable TEMP, HOST, or GPU_MAX_HEAP_SIZE. The
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# ROCm HIP runtime reads those bare env vars (see the 2026-08-13 TEMP
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# incident). This deployment uses Vulkan, not HIP, but the rule stays for
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# portability.
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# CIRU llama-server binary (ROCmFPX v2.3 build, see docs/ciru runtime page).
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# Built against the private TheRock ROCm 7.15 SDK kept in the retired
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# ling3-ciru venv. ROCm 7.15 is required for the advertised Strix Halo
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# performance; the system ROCm 7.2.4 selects slower/fallback kernels.
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LLAMA_BIN=/home/dank/ciru-qwen38/ROCmFPX/build-promptforge/bin/llama-server
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# Upstream llama.cpp DFlash2 binary (PR #27342, Vulkan build).
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LLAMA_BIN=/home/dank/llama.cpp-dflash2/build-dflash2/bin/llama-server
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# Model files. The three-file payload (v2 GGUF + FFN + GDN) enables CIRU
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# DualView prompt acceleration; omit the two .pfs files to run the GGUF alone
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# and save ~19.7 GiB of memory at the cost of prompt throughput.
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MODEL_DIR=/home/dank/models/CIRU-Qwen3.8-27B-ActiveFPX
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MODEL_FILE=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-v2.gguf
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FFN_PFS=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-FFN.pfs
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GDN_PFS=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-GDN.pfs
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# ROCm 7.15 SDK paths (inside the retired ling3-ciru venv). The serve script
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# exports ROCM_PATH and LD_LIBRARY_PATH from these so the 7.15 libraries
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# precede any system ROCm 7.2.4.
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ROCM_DEVEL=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages/_rocm_sdk_devel
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ROCM_LIB=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages/_rocm_sdk_libraries
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ROCM_CORE=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages/_rocm_sdk_core
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# Model files. The target (UD-Q8_K_XL) was already on disk; the DFlash2
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# drafter was added for this deployment. Both live in /home/dank/models.
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MODEL_DIR=/home/dank/models
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MODEL_FILE=Qwen3.8-27B-UD-Q8_K_XL.gguf
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DRAFT_FILE=Qwen3.8-27B-DFlash2-Q4_K_M.gguf
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ALIAS=frank-default-large
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BIND_ADDR=0.0.0.0
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LISTEN_PORT=52625
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# Serving: full native 262144 context (n_ctx_train), 1 slot (user request
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# 2026-08-19: parallel slots degraded performance). -c is the TOTAL
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# context; with PARALLEL=1 it equals the per-slot context. Concurrent
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# requests queue on the single slot; the server never preempts a running
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# generation. f16 KV, context checkpoints, prompt cache, native MTP
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# depth-4. The Strix Halo is unified memory; rocm-smi reports the 64 GiB
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# budget. KV at 262144 x 64 KiB/cell is ~16 GiB.
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# Serving: full native 262144 context, 1 slot. The Vulkan device reports
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# 113942 MiB; KV at 262144 x 64 KiB/cell is ~16 GiB. rocm-smi reports the
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# 64 GiB budget; trust the runtime for the addressable SVM pool.
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CTX_SIZE=262144
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PARALLEL=1
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BATCH_SIZE=4096
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@@ -55,20 +40,21 @@ CACHE_TYPE_V=f16
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CTX_CHECKPOINTS=16
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CACHE_RAM=8192
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# Native MTP draft (depth-4, greedy, ROCm-safe CPU argmax fast path).
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SPEC_DRAFT_N_MAX=4
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# DFlash2 speculative decoding. The drafter's trained block size is 8;
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# SPEC_DRAFT_N_MAX clamps to it. TOP_K selector (top 16 candidates).
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SPEC_TYPE=draft-dflash
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SPEC_DRAFT_N_MAX=8
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SPEC_DRAFT_N_MIN=0
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SPEC_DRAFT_P_MIN=0.0
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SPEC_DRAFT_P_SPLIT=0.10
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# Sampling (model card defaults).
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# Sampling (model card defaults, thinking-general).
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TEMPERATURE=0.7
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TOP_P=0.95
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# Thinking enabled (user request, 2026-08-18). deepseek format moves the
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# <think> reasoning into message.reasoning_content (OpenAI-compatible);
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# none would leave the thought tags unparsed in content.
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# Thinking enabled. deepseek format moves the thinking reasoning into
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# message.reasoning_content (OpenAI-compatible).
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REASONING=on
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REASONING_FORMAT=deepseek
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VERBOSITY=4
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VERBOSITY=4
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@@ -1,5 +1,5 @@
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[Unit]
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Description=CIRU llama.cpp Qwen3.8-27B ActiveFPX PromptForge MTP (dankclaw, frank-default-large)
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Description=llama.cpp DFlash2 Qwen3.8-27B UD-Q8_K_XL + Q4_K_M drafter (dankclaw, frank-default-large)
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After=network-online.target
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Wants=network-online.target
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@@ -1,16 +1,15 @@
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#!/usr/bin/env bash
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# Serve jcbtc/Qwen3.8-27B-CIRU-ActiveFPX-PromptForge as frank-default-large
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# via the CIRU ROCmFPX llama.cpp runtime on Dankclaw (Strix Halo gfx1151).
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# Serve unsloth/Qwen3.8-27B-UD-Q8_K_XL as frank-default-large with a
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# z-lab DFlash2 drafter (Qwen3.8-27B-DFlash2-Q4_K_M) on the Vulkan backend.
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#
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# Runtime: the PromptForge llama-server built from ciru-ai/ROCmFPX tag
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# qwen3.8-activefpx-promptforge-v2.3 (commit 103af8b41) against the private
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# TheRock ROCm 7.15 SDK (kept in the retired ling3-ciru venv). The model is
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# a GGUF with optional PromptForge companion views (FFN/GDN .pfs) that enable
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# CIRU DualView prompt acceleration. Native depth-4 MTP speculative decoding.
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# Runtime: upstream llama.cpp PR #27342 (DFlash2 support) built with
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# GGML_VULKAN=ON for the Strix Halo gfx1151 (RADV). DFlash2 selects its
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# candidates through TOP_K + ARGMAX ops that the HIP backend does not
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# implement, so the whole stack runs on Vulkan0.
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#
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# The model card requires ROCm 7.15 (not the system ROCm 7.2.4) for the
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# advertised Strix Halo performance. LD_LIBRARY_PATH therefore points at the
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# 7.15 SDK libraries first. An older system ROCm must not precede them.
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# The target and the drafter share the Qwen3.8 arch. DFlash is lossless
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# under strict rejection sampling. --spec-draft-n-max clamps to the drafter's
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# trained block size (8).
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#
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# Tunables come from frank-default-large.env in this directory unless
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# FRANK_LARGE_ENV_FILE overrides that path.
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@@ -26,26 +25,23 @@ if [[ -f "$ENV_FILE" ]]; then
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fi
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# --- defaults (used when the env file does not set them) -------------------
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: "${LLAMA_BIN:=/home/dank/ciru-qwen38/ROCmFPX/build-promptforge/bin/llama-server}"
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: "${MODEL_DIR:=/home/dank/models/CIRU-Qwen3.8-27B-ActiveFPX}"
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: "${MODEL_FILE:=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-v2.gguf}"
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: "${FFN_PFS:=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-FFN.pfs}"
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: "${GDN_PFS:=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-GDN.pfs}"
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: "${ROCM_DEVEL:=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages/_rocm_sdk_devel}"
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: "${ROCM_LIB:=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages/_rocm_sdk_libraries}"
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: "${ROCM_CORE:=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages/_rocm_sdk_core}"
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: "${LLAMA_BIN:=/home/dank/llama.cpp-dflash2/build-dflash2/bin/llama-server}"
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: "${MODEL_DIR:=/home/dank/models}"
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: "${MODEL_FILE:=Qwen3.8-27B-UD-Q8_K_XL.gguf}"
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: "${DRAFT_FILE:=Qwen3.8-27B-DFlash2-Q4_K_M.gguf}"
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: "${ALIAS:=frank-default-large}"
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: "${BIND_ADDR:=0.0.0.0}"
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: "${LISTEN_PORT:=52625}"
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: "${CTX_SIZE:=524288}"
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: "${PARALLEL:=2}"
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: "${CTX_SIZE:=262144}"
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: "${PARALLEL:=1}"
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: "${BATCH_SIZE:=4096}"
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: "${UBATCH_SIZE:=4096}"
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: "${CACHE_TYPE_K:=f16}"
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: "${CACHE_TYPE_V:=f16}"
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: "${CTX_CHECKPOINTS:=16}"
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: "${CACHE_RAM:=8192}"
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: "${SPEC_DRAFT_N_MAX:=4}"
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: "${SPEC_TYPE:=draft-dflash}"
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: "${SPEC_DRAFT_N_MAX:=8}"
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: "${SPEC_DRAFT_N_MIN:=0}"
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: "${SPEC_DRAFT_P_MIN:=0.0}"
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: "${SPEC_DRAFT_P_SPLIT:=0.10}"
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@@ -56,22 +52,14 @@ fi
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: "${VERBOSITY:=4}"
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MODEL="$MODEL_DIR/$MODEL_FILE"
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export PROMPTFORGE_SIDECAR="$MODEL_DIR/$FFN_PFS"
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export PROMPTFORGE_GDN_SIDECAR="$MODEL_DIR/$GDN_PFS"
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export PROMPTFORGE_MODE="m2048_fused_tail1476"
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export GGML_CUDA_GRAPH_OPT=0
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export LLAMA_MTP_CPU_ARGMAX_FASTPATH=1
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DRAFT="$MODEL_DIR/$DRAFT_FILE"
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if [[ ! -f "$MODEL" ]]; then
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echo "missing required file: $MODEL" >&2
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exit 1
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fi
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if [[ ! -f "$PROMPTFORGE_SIDECAR" ]]; then
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echo "missing PromptForge FFN companion: $PROMPTFORGE_SIDECAR" >&2
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exit 1
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fi
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if [[ ! -f "$PROMPTFORGE_GDN_SIDECAR" ]]; then
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echo "missing PromptForge GDN companion: $PROMPTFORGE_GDN_SIDECAR" >&2
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if [[ ! -f "$DRAFT" ]]; then
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echo "missing DFlash2 drafter: $DRAFT" >&2
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exit 1
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fi
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if [[ ! -x "$LLAMA_BIN" ]]; then
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@@ -79,16 +67,12 @@ if [[ ! -x "$LLAMA_BIN" ]]; then
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exit 1
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fi
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# ROCm 7.15 SDK libraries must precede any system ROCm in LD_LIBRARY_PATH.
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export ROCM_PATH="$ROCM_DEVEL"
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export LD_LIBRARY_PATH="${ROCM_LIB}/lib:${ROCM_CORE}/lib:${ROCM_DEVEL}/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
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exec "$LLAMA_BIN" \
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--model "$MODEL" \
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--alias "$ALIAS" \
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--host "$BIND_ADDR" \
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--port "$LISTEN_PORT" \
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-dev ROCm0 \
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-dev Vulkan0 \
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-ngl 999 \
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-c "$CTX_SIZE" \
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-b "$BATCH_SIZE" \
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@@ -102,8 +86,9 @@ exec "$LLAMA_BIN" \
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--cache-prompt \
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--metrics \
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--no-mmap \
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--spec-type draft-mtp \
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--spec-draft-device ROCm0 \
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--spec-type "$SPEC_TYPE" \
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--spec-draft-model "$DRAFT" \
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--spec-draft-device Vulkan0 \
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--spec-draft-ngl 999 \
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--spec-draft-type-k f16 \
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--spec-draft-type-v f16 \
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@@ -111,10 +96,9 @@ exec "$LLAMA_BIN" \
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--spec-draft-n-min "$SPEC_DRAFT_N_MIN" \
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--spec-draft-p-min "$SPEC_DRAFT_P_MIN" \
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--spec-draft-p-split "$SPEC_DRAFT_P_SPLIT" \
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--spec-draft-backend-sampling \
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--temp "$TEMPERATURE" \
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--top-p "$TOP_P" \
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--reasoning "$REASONING" \
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--reasoning-format "$REASONING_FORMAT" \
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--reasoning-budget -1 \
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-lv "$VERBOSITY"
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-lv "$VERBOSITY"
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