[diffusion] doc: update ltx2 multi-gpu deployment guide (#24682)

docs_new/src/snippets/diffusion/ltx-deployment.jsx

@@ -2,9 +2,11 @@ export const LTXDeployment = () => {
   const options = {
     hardware: {
       name: 'hardware',
-      title: 'Hardware Platform',
+      title: 'Deployment Target',
       items: [
-        { id: 'h200', label: 'H200', subtitle: 'Fastest, resident', default: true },
+        { id: 'h200', label: '1x H200', subtitle: 'resident', default: true },
+        { id: 'h200-2gpu', label: '2 GPUs', subtitle: 'CFG parallel', default: false },
+        { id: 'h200-4gpu', label: '4 GPUs', subtitle: 'TP2 + CFG', default: false },
         { id: 'standard', label: 'Standard CUDA', subtitle: 'Snapshot mode', default: false },
         { id: 'official', label: 'Official Match', subtitle: 'Original switching', default: false },
       ],
@@ -113,7 +115,7 @@ export const LTXDeployment = () => {
   };
 
   const getDeviceMode = () => {
-    if (values.hardware === 'h200') {
+    if (values.hardware.startsWith('h200')) {
       return 'resident';
     }
     if (values.hardware === 'official') {
@@ -122,6 +124,14 @@ export const LTXDeployment = () => {
     return 'snapshot';
   };
 
+  const getParallelFlags = () => {
+    const parallelFlagsMap = {
+      'h200-2gpu': ` \\\n  --num-gpus 2 \\\n  --enable-cfg-parallel`,
+      'h200-4gpu': ` \\\n  --num-gpus 4 \\\n  --tp-size 2 \\\n  --enable-cfg-parallel`,
+    };
+    return parallelFlagsMap[values.hardware] || '';
+  };
+
   const generateCommand = () => {
     const config = modelConfigs[values.model];
     const pipelineClass = config.pipelines[values.pipeline];
@@ -130,6 +140,7 @@ export const LTXDeployment = () => {
     }
 
     let command = `sglang serve \\\n  --model-path ${config.repoId} \\\n  --pipeline-class-name ${pipelineClass}`;
+    command += getParallelFlags();
     if (values.pipeline !== 'one-stage') {
       command += ` \\\n  --ltx2-two-stage-device-mode ${getDeviceMode()}`;
     }