[AMD] [P/D] Compute num gpus for ROCm correctly in run_accuracy_test.sh (#18568)

Signed-off-by: Randall Smith <Randall.Smith@amd.com>

tests/v1/kv_connector/nixl_integration/run_accuracy_test.sh

@@ -13,6 +13,8 @@ NUM_DECODE_INSTANCES=${NUM_DECODE_INSTANCES:-2}   # Default to 2
 # Find the git repository root directory
 GIT_ROOT=$(git rev-parse --show-toplevel)
 
+SMI_BIN=$(which nvidia-smi || which rocm-smi)
+
 # Trap the SIGINT signal (triggered by Ctrl+C)
 trap 'kill $(jobs -pr)' SIGINT SIGTERM EXIT
 
@@ -44,6 +46,13 @@ get_model_args() {
   echo "$extra_args"
 }
 
+get_num_gpus() {
+  if [[ "$SMI_BIN" == *"nvidia"* ]]; then
+    echo "$($SMI_BIN --query-gpu=name --format=csv,noheader | wc -l)"
+  else
+    echo "$($SMI_BIN -l | grep GPU | wc -l)"
+  fi
+}
 
 # Function to run tests for a specific model
 run_tests_for_model() {
@@ -64,7 +73,7 @@ run_tests_for_model() {
   # Start prefill instances
   for i in $(seq 0 $((NUM_PREFILL_INSTANCES-1))); do
     # Calculate GPU ID - we'll distribute across available GPUs
-    GPU_ID=$((i % $(nvidia-smi --query-gpu=name --format=csv,noheader | wc -l)))
+    GPU_ID=$((i % $(get_num_gpus)))
     # Calculate port number (base port + instance number)
     PORT=$((8100 + i))
     # Calculate side channel port
@@ -96,7 +105,7 @@ run_tests_for_model() {
   # Start decode instances
   for i in $(seq 0 $((NUM_DECODE_INSTANCES-1))); do
     # Calculate GPU ID - we'll distribute across available GPUs, starting from after prefill GPUs
-    GPU_ID=$(((i + NUM_PREFILL_INSTANCES) % $(nvidia-smi --query-gpu=name --format=csv,noheader | wc -l)))
+    GPU_ID=$(((i + NUM_PREFILL_INSTANCES) % $(get_num_gpus)))
     # Calculate port number (base port + instance number)
     PORT=$((8200 + i))
     # Calculate side channel port