diff --git a/configs/multinode_nccl_nccl227_16g.yaml b/configs/multinode_nccl_nccl227_16g.yaml
index c5552fe..5f57a4b 100644
--- a/configs/multinode_nccl_nccl227_16g.yaml
+++ b/configs/multinode_nccl_nccl227_16g.yaml
@@ -23,7 +23,7 @@ multinode_nccl:
     - /usr/mpi/gcc/openmpi-4.1.9a1/lib
     - /tmp/nccl-2.27.7-cuda12.4/usr/lib/x86_64-linux-gnu
     - /usr/local/cuda-12.4/targets/x86_64-linux/lib
-  nccl_tests_dir: null
+  nccl_tests_dir: /data/nccl-tests-latest/build
   tests:
     - all_reduce_perf
     - alltoall_perf
diff --git a/configs/multinode_nccl_nccl227_auto_16g.yaml b/configs/multinode_nccl_nccl227_auto_16g.yaml
index 2492989..f547bff 100644
--- a/configs/multinode_nccl_nccl227_auto_16g.yaml
+++ b/configs/multinode_nccl_nccl227_auto_16g.yaml
@@ -23,7 +23,7 @@ multinode_nccl:
     - /usr/mpi/gcc/openmpi-4.1.9a1/lib
     - /tmp/nccl-2.27.7-cuda12.4/usr/lib/x86_64-linux-gnu
     - /usr/local/cuda-12.4/targets/x86_64-linux/lib
-  nccl_tests_dir: null
+  nccl_tests_dir: /data/nccl-tests-latest/build
   tests:
     - all_reduce_perf
     - alltoall_perf
diff --git a/configs/multinode_nccl_nccl227_diagnostic.yaml b/configs/multinode_nccl_nccl227_diagnostic.yaml
index 5465772..64c0479 100644
--- a/configs/multinode_nccl_nccl227_diagnostic.yaml
+++ b/configs/multinode_nccl_nccl227_diagnostic.yaml
@@ -23,7 +23,7 @@ multinode_nccl:
     - /usr/mpi/gcc/openmpi-4.1.9a1/lib
     - /tmp/nccl-2.27.7-cuda12.4/usr/lib/x86_64-linux-gnu
     - /usr/local/cuda-12.4/targets/x86_64-linux/lib
-  nccl_tests_dir: null
+  nccl_tests_dir: /data/nccl-tests-latest/build
   tests:
     - all_reduce_perf
     - alltoall_perf
diff --git a/configs/multinode_nccl_nccl227_pdf_matrix.yaml b/configs/multinode_nccl_nccl227_pdf_matrix.yaml
index 00a3220..2c33573 100644
--- a/configs/multinode_nccl_nccl227_pdf_matrix.yaml
+++ b/configs/multinode_nccl_nccl227_pdf_matrix.yaml
@@ -23,7 +23,7 @@ multinode_nccl:
     - /usr/mpi/gcc/openmpi-4.1.9a1/lib
     - /tmp/nccl-2.27.7-cuda12.4/usr/lib/x86_64-linux-gnu
     - /usr/local/cuda-12.4/targets/x86_64-linux/lib
-  nccl_tests_dir: null
+  nccl_tests_dir: /data/nccl-tests-latest/build
   tests:
     - all_reduce_perf
     - alltoall_perf
diff --git a/configs/multinode_nccl_nccl227_sweep.yaml b/configs/multinode_nccl_nccl227_sweep.yaml
index da96ef1..f46a4ab 100644
--- a/configs/multinode_nccl_nccl227_sweep.yaml
+++ b/configs/multinode_nccl_nccl227_sweep.yaml
@@ -23,7 +23,7 @@ multinode_nccl:
     - /usr/mpi/gcc/openmpi-4.1.9a1/lib
     - /tmp/nccl-2.27.7-cuda12.4/usr/lib/x86_64-linux-gnu
     - /usr/local/cuda-12.4/targets/x86_64-linux/lib
-  nccl_tests_dir: null
+  nccl_tests_dir: /data/nccl-tests-latest/build
   tests:
     - all_reduce_perf
     - alltoall_perf
diff --git a/docs/multinode_nccl_deep_diagnose_runbook.md b/docs/multinode_nccl_deep_diagnose_runbook.md
index 11a0629..8bd082e 100644
--- a/docs/multinode_nccl_deep_diagnose_runbook.md
+++ b/docs/multinode_nccl_deep_diagnose_runbook.md
@@ -24,6 +24,16 @@ bash scripts/multinode_nccl_deep_diagnose.sh preflight
 bash scripts/multinode_nccl_deep_diagnose.sh all
 ```
 
+如果要按 PDF 参考矩阵跑正式多机多卡报告，使用：
+
+```bash
+cd /root/test_gpu_scripts
+bash scripts/run_multinode_nccl_pdf_matrix.sh
+```
+
+它会跑 2 机 x 1/2/4/8 GPU per node 的 `all_reduce_perf` 和 `alltoall_perf`，输出到
+`reports/multinode_nccl_pdf_matrix_YYYYMMDD_HHMMSS.md`。
+
 默认输出目录为：
 
 ```text
@@ -63,7 +73,7 @@ bash scripts/multinode_nccl_deep_diagnose.sh all
 如果 nccl-tests 或 NCCL 运行库路径变化：
 
 ```bash
-NCCL_TESTS_DIR=/opt/gpu-test-tools/nccl-tests/build \
+NCCL_TESTS_DIR=/data/nccl-tests-latest/build \
 NCCL_LD_LIBRARY_PATH=/usr/mpi/gcc/openmpi-4.1.9a1/lib:/path/to/nccl/lib:/usr/local/cuda/lib64 \
 bash scripts/multinode_nccl_deep_diagnose.sh graph
 ```
diff --git a/reports_multinode_nccl_handoff_plan_20260523.md b/reports_multinode_nccl_handoff_plan_20260523.md
index 9b639ad..6df9c66 100644
--- a/reports_multinode_nccl_handoff_plan_20260523.md
+++ b/reports_multinode_nccl_handoff_plan_20260523.md
@@ -119,6 +119,13 @@ cd /root/test_gpu_scripts
 bash scripts/run_h100_single_node_all.sh
 ```
 
+### 多机多卡 PDF 矩阵
+
+```bash
+cd /root/test_gpu_scripts
+bash scripts/run_multinode_nccl_pdf_matrix.sh
+```
+
 ### 完整深度诊断
 
 ```bash
@@ -155,6 +162,8 @@ OUT_DIR=/root/test_gpu_scripts/reports/nccl_deep_diag_plugin_check_$(date +%Y%m%
 | `scripts/multinode_nccl_deep_diagnose.sh` | 可复跑诊断脚本 |
 | `scripts/nccl_environment_snapshot.sh` | 单节点 HCA/plugin/topo 快照脚本 |
 | `scripts/run_h100_single_node_all.sh` | 单节点原始 `test all` 报告入口 |
+| `scripts/run_multinode_nccl_pdf_matrix.sh` | 多机多卡 PDF 矩阵报告入口 |
+| `configs/multinode_nccl_nccl227_pdf_matrix.yaml` | 多机多卡 PDF 矩阵配置 |
 
 ## 当前建议
 
diff --git a/reports_multinode_nccl_latest_index_20260523.md b/reports_multinode_nccl_latest_index_20260523.md
index 2aa9bd3..2d5b2ae 100644
--- a/reports_multinode_nccl_latest_index_20260523.md
+++ b/reports_multinode_nccl_latest_index_20260523.md
@@ -28,8 +28,17 @@
 | `scripts/multinode_nccl_deep_diagnose.sh` | 可复跑的多节点 NCCL 深度诊断脚本 |
 | `scripts/nccl_environment_snapshot.sh` | 单节点 NCCL/RDMA 环境等价性快照脚本，不启动 NCCL workload |
 | `scripts/run_h100_single_node_all.sh` | 单节点 H100 `test all` 原始报告入口，默认同时采环境快照 |
+| `scripts/run_multinode_nccl_pdf_matrix.sh` | 多机多卡 PDF 矩阵入口，跑 2 机 x 1/2/4/8 GPU per node 的 allreduce/alltoall |
+| `configs/multinode_nccl_nccl227_pdf_matrix.yaml` | 多机多卡 PDF 矩阵配置，固定 NCCL 2.27.7 和 `/data/nccl-tests-latest/build` |
 | `docs/multinode_nccl_deep_diagnose_runbook.md` | 诊断脚本中文 runbook |
 
+多机多卡 PDF 矩阵：
+
+```bash
+cd /root/test_gpu_scripts
+bash scripts/run_multinode_nccl_pdf_matrix.sh
+```
+
 单节点 H100 原始 all 报告：
 
 ```bash
diff --git a/scripts/run_multinode_nccl_pdf_matrix.sh b/scripts/run_multinode_nccl_pdf_matrix.sh
new file mode 100755
index 0000000..c61dcab
--- /dev/null
+++ b/scripts/run_multinode_nccl_pdf_matrix.sh
@@ -0,0 +1,142 @@
+#!/usr/bin/env bash
+set -uo pipefail
+
+# Run the formal cross-node NCCL PDF matrix for the current two-node H100 pair.
+# This wrapper standardizes the command, output naming, and preflight hook; the
+# actual benchmark implementation remains in gpu_tester.py / MultiNodeNCCLTest.
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+PROJECT_DIR="$(cd -- "$SCRIPT_DIR/.." >/dev/null 2>&1 && pwd)"
+
+PYTHON_BIN="${PYTHON_BIN:-/root/gpu-test-venv/bin/python}"
+CONFIG_FILE="${CONFIG_FILE:-$PROJECT_DIR/configs/multinode_nccl_nccl227_pdf_matrix.yaml}"
+OUT_DIR="${OUT_DIR:-$PROJECT_DIR/reports}"
+FORMAT="${FORMAT:-md}"
+DRY_RUN=0
+RUN_PREFLIGHT=1
+PREFLIGHT_ONLY=0
+
+usage() {
+  cat <<'EOF'
+Usage: run_multinode_nccl_pdf_matrix.sh [options]
+
+Options:
+  --python PATH       Python executable (default: /root/gpu-test-venv/bin/python)
+  --config PATH       Matrix config file (default: configs/multinode_nccl_nccl227_pdf_matrix.yaml)
+  --out-dir PATH      Report output directory (default: reports)
+  --format FORMAT     Report format: md, json, or html (default: md)
+  --no-preflight      Skip scripts/multinode_nccl_deep_diagnose.sh preflight
+  --preflight-only    Run only the preflight check, not the matrix workload
+  --dry-run           Print commands without running them
+  -h, --help          Show this help
+EOF
+}
+
+while (($#)); do
+  case "$1" in
+    --python)
+      PYTHON_BIN="$2"
+      shift 2
+      ;;
+    --config)
+      CONFIG_FILE="$2"
+      shift 2
+      ;;
+    --out-dir)
+      OUT_DIR="$2"
+      shift 2
+      ;;
+    --format)
+      FORMAT="$2"
+      shift 2
+      ;;
+    --no-preflight)
+      RUN_PREFLIGHT=0
+      shift
+      ;;
+    --preflight-only)
+      PREFLIGHT_ONLY=1
+      shift
+      ;;
+    --dry-run)
+      DRY_RUN=1
+      shift
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "Unknown argument: $1" >&2
+      usage >&2
+      exit 2
+      ;;
+  esac
+done
+
+if [[ "$FORMAT" != "md" && "$FORMAT" != "json" && "$FORMAT" != "html" ]]; then
+  echo "Unsupported format: $FORMAT" >&2
+  exit 2
+fi
+
+if [[ ! -x "$PYTHON_BIN" ]]; then
+  PYTHON_BIN="$(command -v python3 || true)"
+fi
+
+if [[ -z "$PYTHON_BIN" || ! -x "$PYTHON_BIN" ]]; then
+  echo "Python executable not found. Set --python or PYTHON_BIN." >&2
+  exit 1
+fi
+
+TS="$(date +%Y%m%d_%H%M%S)"
+mkdir -p "$OUT_DIR"
+
+REPORT_FILE="$OUT_DIR/multinode_nccl_pdf_matrix_${TS}.${FORMAT}"
+PREFLIGHT_CMD=(bash "$PROJECT_DIR/scripts/multinode_nccl_deep_diagnose.sh" preflight)
+MATRIX_CMD=(
+  "$PYTHON_BIN" "$PROJECT_DIR/gpu_tester.py"
+  --config "$CONFIG_FILE"
+  --test multinode-nccl
+  --report
+  --format "$FORMAT"
+  --output "$REPORT_FILE"
+)
+
+echo "Project: $PROJECT_DIR"
+echo "Config: $CONFIG_FILE"
+echo "Report: $REPORT_FILE"
+echo "Matrix: 2 nodes x {1,2,4,8} GPUs per node; all_reduce_perf + alltoall_perf; 16G"
+
+if ((DRY_RUN)); then
+  if ((RUN_PREFLIGHT)); then
+    printf 'DRY RUN preflight:'
+    printf ' %q' "${PREFLIGHT_CMD[@]}"
+    printf '\n'
+  fi
+  if ((PREFLIGHT_ONLY)); then
+    exit 0
+  fi
+  printf 'DRY RUN matrix:'
+  printf ' %q' "${MATRIX_CMD[@]}"
+  printf '\n'
+  exit 0
+fi
+
+if ((RUN_PREFLIGHT)); then
+  "${PREFLIGHT_CMD[@]}"
+  preflight_status=$?
+  if ((preflight_status != 0)); then
+    echo "Preflight failed with exit code $preflight_status" >&2
+    exit "$preflight_status"
+  fi
+fi
+
+if ((PREFLIGHT_ONLY)); then
+  exit 0
+fi
+
+"${MATRIX_CMD[@]}"
+status=$?
+
+echo "Report written to: $REPORT_FILE"
+exit "$status"