[docs] Tell Qwen3.8-27B DFLASH2 users to build from main (#35753)

docs/cookbook/autoregressive/Qwen/Qwen3.8-27B.mdx

@@ -20,6 +20,9 @@ For all methods and hardware platforms, see the [official SGLang installation gu
 pip install --upgrade pip
 pip install uv
 uv pip install sglang
+
+# For the DFLASH2 cells only — DFlash2 selector support is newer than the
+# latest release, so install from source (Method 2) instead of the line above.
 ```
 
 Then run the **Python** output of the command panel below in that environment.
@@ -30,6 +33,10 @@ Then run the **Python** output of the command panel below in that environment.
 
 ```bash Command
 docker pull lmsysorg/sglang:qwen38-27b
+
+# For the DFLASH2 cells only — that tag predates DFlash2 selector support,
+# so pull a nightly built from main instead:
+# docker pull lmsysorg/sglang:dev-nightly-0820
 ```
 
 For how to launch the image, see [Install → Method 3: Using Docker](../../../docs/get-started/install#method-3-using-docker). Substitute the inner `sglang serve ...` with what the command generator below produces.
@@ -38,6 +45,17 @@ For how to launch the image, see [Install → Method 3: Using Docker](../../../d
 
 </Tabs>
 
+<Warning>
+**DFLASH2 needs a build that tracks main.** DFlash2 landed in
+[#35371](https://github.com/sgl-project/sglang/pull/35371), and DFlash2 + NVFP4
+— the quantized `lm_head` path — in
+[#35496](https://github.com/sgl-project/sglang/pull/35496). Both are newer than
+the pinned `lmsysorg/sglang:qwen38-27b` tag and than the latest PyPI release; a
+build without #35496 fails on the NVFP4 cells at boot with `requires a dense
+FP16/BF16/FP32 target lm_head`. Every other recipe on this page — no
+speculation, MTP, DSpark — runs on the pinned tag as written.
+</Warning>
+
 </Accordion>
 
 Pick your card + checkpoint precision to generate the launch command. The model runs single-GPU on every supported card — H200, RTX PRO 6000, RTX 5090 and DGX Spark — and ships one operating point.
@@ -56,19 +74,34 @@ import { Qwen38MambaRatioCalculator } from "/src/snippets/_qwen38_mamba_ratio_ca
 
 <Deployment config={config} />
 
+<Warning>
+  **Picking DFLASH2 requires SGLang built from main.** DFlash2 landed in
+  [#35371](https://github.com/sgl-project/sglang/pull/35371), and DFlash2 +
+  NVFP4 — the quantized `lm_head` path — in
+  [#35496](https://github.com/sgl-project/sglang/pull/35496). Both are newer
+  than the `lmsysorg/sglang:qwen38-27b` tag pinned in
+  [Install SGLang](#install) and than the latest PyPI release; on NVFP4 a build
+  without #35496 fails at boot with `requires a dense FP16/BF16/FP32 target
+  lm_head`. Every other Speculative Decoding pick — None, EAGLE, DSPARK — runs
+  on the pinned tag as written.
+</Warning>
+
 <Note>
   The RTX 5090 and RTX PRO 6000 cells above — including every Speculative
   Decoding / Serving Strategy / SSM dtype combination — were validated at
-  ISL 8192 / OSL 1024, concurrency 1 — for DFLASH2, to that full standard on
-  NVFP4, and to boot-and-serve on the RTX PRO 6000 BF16/FP8 cells. On the
-  remaining platforms the DFLASH2 pick is offered but not yet exercised, and
-  the composed command carries a `# DFLASH2 on this platform: final
-  verification in progress` hint line while it is selected. The DGX Spark cells cover that same combination set minus
-  DFLASH2, but to a weaker standard: each was confirmed to **boot and
-  serve** at ISL 8192 / OSL 1024, concurrency 1, with no throughput or
-  acceptance-length numbers taken. The remaining platforms' recipes carry their
-  original validation, which covers the default overlay picks (plus MTP on
-  GB300); non-default overlay picks there are valid but unmeasured.
+  ISL 8192 / OSL 1024, concurrency 1; for DFLASH2, to that full standard on
+  NVFP4 and to boot-and-serve on the RTX PRO 6000 BF16/FP8 cells. The DGX Spark
+  cells cover the same combination set minus DFLASH2, but to a weaker standard:
+  each was confirmed to **boot and serve** at ISL 8192 / OSL 1024,
+  concurrency 1, with no throughput or acceptance-length numbers taken. The
+  H200 and GB300 recipes carry their original validation, which covers the
+  default overlay picks (plus MTP on GB300); non-default overlay picks there
+  are valid but unmeasured.
+
+  DFLASH2 has not been exercised on H200, DGX Spark or GB300: selecting it
+  there switches the cell's badge to **Final Verification In Progress** until
+  that round lands. The other picks on those platforms keep the validation
+  described above.
 </Note>
 
 ### Mamba ratio calculator
@@ -234,8 +267,8 @@ checkpoint's calibration scales automatically.
   is NVFP4-packed; the BF16 and FP8 checkpoints keep a dense head).
   Validation: NVFP4 measured end-to-end on RTX PRO 6000 and RTX 5090; the
   RTX PRO 6000 BF16/FP8 cells boot and serve; on H200, DGX Spark and GB300
-  the pick is offered with a final-verification-in-progress hint line
-  above the command. The
+  those cells carry the **Final Verification In Progress**
+  badge. The
   RTX PRO 6000 recipe needs no changes. On the 32GB RTX 5090 prefer
   `--mamba-ssm-dtype bfloat16` at `--mem-fraction-static 0.90`: measured
   strictly better than float32 for this draft (6.1 vs 8.3 ms TPOT, accept

docs/scripts/check_cookbook_configs.mjs

@@ -169,6 +169,20 @@ for (const path of walk(CONFIGS)) {
       }
     }
   };
+  // A cell may report its badge per selection (`verificationStatus` as a
+  // function of sel), so it has to survive the same space the predicates do —
+  // it renders on every pick, and an unrecognized return silently downgrades
+  // the badge to "Not Verified" rather than erroring in the browser.
+  const VERIFY_STATES = ["verified", "in-progress", "unverified"];
+  for (const [i, cell] of (config.cells || []).entries()) {
+    if (typeof cell.verificationStatus !== "function") continue;
+    probe((sel) => {
+      const out = cell.verificationStatus(sel);
+      if (out !== undefined && !VERIFY_STATES.includes(out)) {
+        throw new Error(`returned ${JSON.stringify(out)}, expected one of [${VERIFY_STATES}]`);
+      }
+    }, `cells[${i}].verificationStatus`);
+  }
   for (const dim of [...(config.matchDims || []), ...(config.overlayDims || [])]) {
     if (typeof dim.showWhen === "function") probe(dim.showWhen, `${dim.id}.showWhen`);
     for (const opt of (dim.options || [])) {

docs/src/snippets/_deployment.jsx

@@ -38,7 +38,10 @@
 //                      `verified` is the boolean badge baseline.
 //                      `verificationStatus` overrides it with a third state —
 //                      "verified" | "in-progress" | "unverified" — for a recipe
-//                      whose verification round is open rather than absent.
+//                      whose verification round is open rather than absent. It
+//                      may also be a function of the selection, for a cell whose
+//                      verification depends on an overlay pick (e.g. one
+//                      speculative option still being validated).
 //   modelNames         HF slug lookup, `hw|variant|quant`, `variant|quant`,
 //                      `hw|quant`, `quant`, `hw`, then `default`
 //   placeholders       {{KEY}} → {target: 'command'|'curl', label, default?}
@@ -443,8 +446,14 @@ export const Deployment = ({ config, benchmarks }) => {
     typeof v === "string"
       ? (VERIFY_LABEL[v] ? v : "unverified")
       : (v ? "verified" : "unverified");
-  const cellVerifyStatus = (c) =>
-    c ? verifyStatusOf(c.verificationStatus ?? c.verified) : "unverified";
+  const cellVerifyStatus = (c, sel) => {
+    if (!c) return "unverified";
+    const v =
+      typeof c.verificationStatus === "function"
+        ? c.verificationStatus(sel)
+        : c.verificationStatus;
+    return verifyStatusOf(v ?? c.verified);
+  };
 
   // Two kinds of selector row:
   //   match dims    participate in cell lookup (cell.match[dim] === sel[dim])
@@ -1240,7 +1249,7 @@ export const Deployment = ({ config, benchmarks }) => {
   // ==== 5. Derived values ====
   const s = makeStyles(isDark);
   const cell = findCell(config.cells, sel);
-  const verifyStatus = cellVerifyStatus(cell);
+  const verifyStatus = cellVerifyStatus(cell, sel);
   // Pin the calculator-computed ratio into the rendered command (before the
   // host/port tail); cells themselves stay ratio-free.
   const cellWithRatio = (() => {

docs/src/snippets/configs/Qwen/qwen3.8-27b.jsx

@@ -122,17 +122,12 @@ export const config = {
           // selector projects through the target lm_head — including
           // quantized heads — so it runs on the NVFP4 checkpoint too.
           // Validated on the SM120 pair (NVFP4 measured end to end; the
-          // RTX PRO 6000 BF16/FP8 cells boot-and-serve). On the other
-          // platforms the pick is offered with the in-progress hint below
-          // — the recipe composes from validated cells but has not been
-          // exercised there yet.
+          // RTX PRO 6000 BF16/FP8 cells boot-and-serve). The platforms where
+          // it has not been exercised carry verificationStatus "in-progress"
+          // on their cells.
           disabled: (sel) => sel.hw === "rtx5090" && sel.quant !== "nvfp4",
           disableReason:
             "On the 32GB RTX 5090 the DFlash2 draft model only fits on top of the NVFP4 weights",
-          hints: (sel) =>
-            ["rtx6000", "rtx5090"].includes(sel.hw)
-              ? []
-              : ["DFLASH2 on this platform: final verification in progress"],
           // 5090: mem-fraction re-pins like DSPARK's, and fp32 additionally
           // re-pins the ratio — the balanced L=9216 value leaves the state
           // pool one slot short at every serviceable mem-fraction (see the
@@ -405,6 +400,10 @@ export const config = {
       // runnable, but not a recipe this page ships.
       match: { hw: "h200", variant: "default", quant: "fp8", nodes: "single" },
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -424,6 +423,10 @@ export const config = {
       // H200, BF16 reference checkpoint (~54GB of weights).
       match: { hw: "h200", variant: "default", quant: "bf16", nodes: "single" },
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -545,6 +548,10 @@ export const config = {
       // exercises the 4-bit `lm_head` this checkpoint quantizes, with no shape
       // error.
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -563,6 +570,10 @@ export const config = {
       match: { hw: "dgx-spark", variant: "default", quant: "fp8", nodes: "single" },
       // All 12 overlay combinations served on GB10.
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -582,6 +593,10 @@ export const config = {
       // All 12 overlay combinations served on GB10. Heaviest checkpoint, so
       // it holds the sweep's tightest cell: DSPARK + float32 + extra_buffer.
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -603,6 +618,10 @@ export const config = {
     {
       match: { hw: "gb300", variant: "default", quant: "nvfp4", nodes: "single" },
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -619,6 +638,10 @@ export const config = {
     {
       match: { hw: "gb300", variant: "default", quant: "fp8", nodes: "single" },
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",
@@ -635,6 +658,10 @@ export const config = {
     {
       match: { hw: "gb300", variant: "default", quant: "bf16", nodes: "single" },
       verified: true,
+      // DFLASH2 has not been exercised on this platform; every other overlay
+      // pick keeps this cell's original validation.
+      verificationStatus: (sel) =>
+        sel.spec === "dflash" ? "in-progress" : "verified",
       env: [],
       flags: [
         "--trust-remote-code",