diff --git a/.buildkite/nightly-benchmarks/benchmark-pipeline.yaml b/.buildkite/nightly-benchmarks/benchmark-pipeline.yaml
index 2b25c954b5c5c..02c0ee534d72c 100644
--- a/.buildkite/nightly-benchmarks/benchmark-pipeline.yaml
+++ b/.buildkite/nightly-benchmarks/benchmark-pipeline.yaml
@@ -11,7 +11,7 @@ steps:
             - sh
             - .buildkite/nightly-benchmarks/scripts/wait-for-image.sh
   - wait
-  - label: "A100 Benchmark"
+  - label: "A100"
     agents:
       queue: A100
     plugins:
@@ -42,21 +42,20 @@ steps:
           - name: devshm
             emptyDir:
               medium: Memory
-  # - label: "H100: NVIDIA SMI"
-  #   agents:
-  #     queue: H100
-  #   plugins:
-  #   - docker#v5.11.0:
-  #       image: public.ecr.aws/q9t5s3a7/vllm-ci-test-repo:$BUILDKITE_COMMIT
-  #       command:
-  #       - bash
-  #       - .buildkite/nightly-benchmarks/run-benchmarks-suite.sh
-  #       mount-buildkite-agent: true
-  #       propagate-environment: true
-  #       propagate-uid-gid: false
-  #       ipc: host
-  #       gpus: all
-  #       environment:
-  #       - VLLM_USAGE_SOURCE
-  #       - HF_TOKEN
+  - label: "H100"
+    agents:
+      queue: H100
+    plugins:
+    - docker#v5.11.0:
+        image: public.ecr.aws/q9t5s3a7/vllm-ci-test-repo:$BUILDKITE_COMMIT
+        command:
+        - bash
+        - .buildkite/nightly-benchmarks/run-benchmarks-suite.sh
+        mount-buildkite-agent: true
+        propagate-environment: true
+        ipc: host
+        gpus: all
+        environment:
+        - VLLM_USAGE_SOURCE
+        - HF_TOKEN
 
diff --git a/.buildkite/nightly-benchmarks/run-benchmarks-suite.sh b/.buildkite/nightly-benchmarks/run-benchmarks-suite.sh
index 021473f76d0e5..04b02adf3644c 100644
--- a/.buildkite/nightly-benchmarks/run-benchmarks-suite.sh
+++ b/.buildkite/nightly-benchmarks/run-benchmarks-suite.sh
@@ -54,7 +54,7 @@ wait_for_server() {
   # wait for vllm server to start
   # return 1 if vllm server crashes
   timeout 1200 bash -c '
-    until curl localhost:8000/v1/completions; do
+    until curl -X POST localhost:8000/v1/completions; do
       sleep 1
     done' && return 0 || return 1
 }
@@ -73,8 +73,17 @@ kill_gpu_processes() {
       echo "All GPU processes have been killed."
   fi
 
+  # Sometimes kill with pid doesn't work properly, we can also kill all process running python or python3
+  # since we are in container anyway
+  pkill -9 -f python
+  pkill -9 -f python3
+
   # waiting for GPU processes to be fully killed
-  sleep 10
+  # loop while nvidia-smi returns any processes
+  while [ -n "$(nvidia-smi --query-compute-apps=pid --format=csv,noheader)" ]; do
+    sleep 1
+    echo "Waiting for GPU processes to be killed"
+  done
 
   # remove vllm config file
   rm -rf ~/.config/vllm
@@ -90,12 +99,19 @@ upload_to_buildkite() {
   # upload the benchmarking results to buildkite
 
   # if the agent binary is not found, skip uploading the results, exit 0
-  if [ ! -f /workspace/buildkite-agent ]; then
+  # Check if buildkite-agent is available in the PATH or at /workspace/buildkite-agent
+  if command -v buildkite-agent >/dev/null 2>&1; then
+    BUILDKITE_AGENT_COMMAND="buildkite-agent"
+  elif [ -f /workspace/buildkite-agent ]; then
+    BUILDKITE_AGENT_COMMAND="/workspace/buildkite-agent"
+  else
     echo "buildkite-agent binary not found. Skip uploading the results."
     return 0
   fi
-  /workspace/buildkite-agent annotate --style "info" --context "benchmark-results" < $RESULTS_FOLDER/benchmark_results.md
-  /workspace/buildkite-agent artifact upload "$RESULTS_FOLDER/*"
+
+  # Use the determined command to annotate and upload artifacts
+  $BUILDKITE_AGENT_COMMAND annotate --style "info" --context "$BUILDKITE_LABEL-benchmark-results" < $RESULTS_FOLDER/benchmark_results.md
+  $BUILDKITE_AGENT_COMMAND artifact upload "$RESULTS_FOLDER/*"
 }
 
 run_latency_tests() {
@@ -269,6 +285,7 @@ run_serving_tests() {
     echo "Running test case $test_name"
     echo "Server command: $server_command"
     eval "$server_command" &
+    server_pid=$!
 
     # wait until the server is alive
     wait_for_server
@@ -318,6 +335,7 @@ run_serving_tests() {
     done
 
     # clean up
+    kill -9 $server_pid
     kill_gpu_processes
   done
 }