fix buffering issue with 2 processes outputting too fast in dummy test

.circleci/config.yml

@@ -27,11 +27,15 @@ commands:
             fi
 
             # Start first instance
-            HF_HOME="$(pwd)/.hf_cache_node1" DEBUG_DISCOVERY=7 DEBUG=7 exo --inference-engine <<parameters.inference_engine>> --node-id "node1" --listen-port 5678 --broadcast-port 5679 --chatgpt-api-port 8000 --chatgpt-api-response-timeout 900 --disable-tui 2>&1 | tee output1.log &
+            HF_HOME="$(pwd)/.hf_cache_node1" DEBUG_DISCOVERY=7 DEBUG=7 exo --inference-engine <<parameters.inference_engine>> \
+              --node-id "node1" --listen-port 5678 --broadcast-port 5679 --chatgpt-api-port 8000 \
+              --chatgpt-api-response-timeout 900 --disable-tui 2>&1 | stdbuf -oL tee output1.log &
             PID1=$!
 
             # Start second instance
-            HF_HOME="$(pwd)/.hf_cache_node2" DEBUG_DISCOVERY=7 DEBUG=7 exo --inference-engine <<parameters.inference_engine>> --node-id "node2" --listen-port 5679 --broadcast-port 5678 --chatgpt-api-port 8001 --chatgpt-api-response-timeout 900 --disable-tui 2>&1 | tee output2.log &
+            HF_HOME="$(pwd)/.hf_cache_node2" DEBUG_DISCOVERY=7 DEBUG=7 exo --inference-engine <<parameters.inference_engine>> \
+              --node-id "node2" --listen-port 5679 --broadcast-port 5678 --chatgpt-api-port 8001 \
+              --chatgpt-api-response-timeout 900 --disable-tui 2>&1 | stdbuf -oL tee output2.log &
             PID2=$!
 
             # Wait for discovery