[doc] Update GLM4.x.md, add GLM4.x multi-node deploy tutorial (#6872)

### What this PR does / why we need it?

This PR updates the GLM4.x documentation by adding multi-node like 2 ×
Atlas 800 A2 (64G × 8) deployment tutorial.

- **What changed**: Added instructions for deploying GLM-4.X models
across multiple nodes, including environment variables and example
commands.
- **Why needed**: Although the previous tutorial stated that multi-node
deployment on Atlas 800 A2 (64GB × 8) is **not recommended**, but we
still face some situation that must deploy GLM-4.7 on 2 × Atlas 800 A2
(64G × 8). And we successfully run GLM-4.7 on 2 nodes and it works fine,
so we think it might be the time to update this part.

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

- Verified that the new documentation renders correctly in Markdown
format.
- Tested the multi-node deployment steps on 2 × Atlas 800 A2 (64G × 8)
to ensure the commands work as described.
- Confirmed that existing GLM4.x documentation links and structure
remain intact.
- vLLM version: v0.16.0
- vLLM main:
15d76f74e2

---------

Signed-off-by: ZKSU <zksu@outlook.com>

docs/source/tutorials/models/GLM4.x.md

@@ -98,7 +98,7 @@ vllm serve /weight/glm4.5_w8a8_with_float_mtp \
   --gpu-memory-utilization 0.9 \
   --speculative-config '{"num_speculative_tokens": 1, "model":"/weight/glm4.5_w8a8_with_float_mtp", "method":"mtp"}' \
   --compilation-config '{"cudagraph_capture_sizes": [1,2,4,8,16,32], "cudagraph_mode": "FULL_DECODE_ONLY"}' \
-  --async-scheduling \
+  --async-scheduling
 ```
 
 **Notice:**
@@ -109,7 +109,103 @@ The parameters are explained as follows:
 
 ### Multi-node Deployment
 
-Not recommended to deploy multi-node on Atlas 800 A2 (64G * 8).
+Although the former tutorial said "Not recommended to deploy multi-node on Atlas 800 A2 (64G × 8)", but if you insist to deploy GLM-4.x model on multi-node like 2 × Atlas 800 A2 (64G × 8), run the following scripts on two nodes respectively.
+
+**Node 0**
+
+```shell
+#!/bin/sh
+
+# this obtained through ifconfig
+# nic_name is the network interface name corresponding to local_ip of the current node
+nic_name="xxxx"
+local_ip="xxxx"
+
+export HCCL_IF_IP=$local_ip
+export GLOO_SOCKET_IFNAME=$nic_name
+export TP_SOCKET_IFNAME=$nic_name
+export HCCL_SOCKET_IFNAME=$nic_name
+export OMP_PROC_BIND=false
+export OMP_NUM_THREADS=1
+export HCCL_BUFFSIZE=200
+export PYTORCH_NPU_ALLOC_CONF=expandable_segments:True
+export VLLM_ASCEND_BALANCE_SCHEDULING=1
+export HCCL_INTRA_PCIE_ENABLE=1
+export HCCL_INTRA_ROCE_ENABLE=0
+export VLLM_USE_MODELSCOPE=True
+
+vllm serve ZhipuAI/GLM-4.7 \
+    --host 0.0.0.0 \
+    --port 30000 \
+    --data-parallel-size 4 \
+    --data-parallel-size-local 2 \
+    --data-parallel-address $local_ip \
+    --data-parallel-rpc-port 13389 \
+    --tensor-parallel-size 4 \
+    --seed 1024 \
+    --async-scheduling \
+    --max-num-seqs 16 \
+    --max-model-len 16384 \
+    --max-num-batched-tokens 4096 \
+    --gpu-memory-utilization 0.92 \
+    --enable-auto-tool-choice \
+    --reasoning-parser glm45 \
+    --tool-call-parser glm47 \
+    --speculative-config {"num_speculative_tokens":3,"method":"mtp"} \
+    --compilation-config {"cudagraph_capture_sizes":[4,16,32,48,64], "cudagraph_mode": "FULL_DECODE_ONLY"} \
+    --trust-remote-code \
+    --served-model-name glm47
+
+```
+
+**Node 1**
+
+```shell
+#!/bin/sh
+
+# this obtained through ifconfig
+# nic_name is the network interface name corresponding to local_ip of the current node
+nic_name="xxxx"
+local_ip="xxxx"
+node0_ip="xxxx" # same as the local_IP address in node 0
+
+export HCCL_IF_IP=$local_ip
+export GLOO_SOCKET_IFNAME=$nic_name
+export TP_SOCKET_IFNAME=$nic_name
+export HCCL_SOCKET_IFNAME=$nic_name
+export OMP_PROC_BIND=false
+export OMP_NUM_THREADS=1
+export HCCL_BUFFSIZE=200
+export PYTORCH_NPU_ALLOC_CONF=expandable_segments:True
+export VLLM_ASCEND_BALANCE_SCHEDULING=1
+export HCCL_INTRA_PCIE_ENABLE=1
+export HCCL_INTRA_ROCE_ENABLE=0
+export VLLM_USE_MODELSCOPE=True
+
+vllm serve ZhipuAI/GLM-4.7 \
+    --host 0.0.0.0 \
+    --port 30000 \
+    --headless \
+    --data-parallel-size 4 \
+    --data-parallel-size-local 2 \
+    --data-parallel-start-rank 2 \
+    --data-parallel-address $node0_ip \
+    --data-parallel-rpc-port 13389 \
+    --tensor-parallel-size 4 \
+    --seed 1024 \
+    --async-scheduling \
+    --max-num-seqs 16 \
+    --max-model-len 16384 \
+    --max-num-batched-tokens 4096 \
+    --gpu-memory-utilization 0.92 \
+    --enable-auto-tool-choice \
+    --reasoning-parser glm45 \
+    --tool-call-parser glm47 \
+    --speculative-config {"num_speculative_tokens":3,"method":"mtp"} \
+    --compilation-config {"cudagraph_capture_sizes":[4,16,32,48,64], "cudagraph_mode": "FULL_DECODE_ONLY"} \
+    --trust-remote-code \
+    --served-model-name glm47
+```
 
 ### Prefill-Decode Disaggregation