Adding scripts, commands, and logging scaffolding

scripts/00_env.sh

@@ -1,21 +1,48 @@
 #!/bin/bash
 set -eu
-# source this from anywhere inside /home/carlos/projects/gem5
 
 ROOT="/home/carlos/projects/gem5"
-export GEM5="$ROOT/build/ARM/gem5.opt"
-export CFG="$ROOT/scripts/hetero_big_little.py"
-export RUN="$ROOT/gem5-run"
-export OUTROOT="$ROOT/iot/results"
-export LOGROOT="$ROOT/iot/logs"
+IOT="$ROOT/iot"
+DATA="$ROOT/gem5-data"                     # persistent store (your symlink)
+RUN="$ROOT/gem5-run"                       # workloads
+CFG="$ROOT/scripts/hetero_big_little.py"   # gem5 config script
 
-mkdir -p "$OUTROOT" "$LOGROOT"
+# auto-detect gem5.opt (ARM or ARM64)
+if [ -x "$ROOT/build/ARM/gem5.opt" ]; then
+  GEM5="$ROOT/build/ARM/gem5.opt"
+elif [ -x "$ROOT/gem5-build/ARM/gem5.opt" ]; then
+  GEM5="$ROOT/gem5-build/ARM/gem5.opt"
+elif [ -x "$ROOT/gem5-build/ARM64/gem5.opt" ]; then
+  GEM5="$ROOT/gem5-build/ARM64/gem5.opt"
+else
+  echo "[env] gem5.opt not found. Build it with:"
+  echo "      scons build/ARM/gem5.opt -j\$(nproc)"
+  exit 2
+fi
 
-# record environment (append-only)
+# primary outputs in gem5-data, mirrored into iot/
+OUT_DATA="$DATA/SmartEdgeAI/results"
+LOG_DATA="$DATA/SmartEdgeAI/logs"
+OUT_IOT="$IOT/results"
+LOG_IOT="$IOT/logs"
+
+# ensure directories
+mkdir -p "$OUT_DATA" "$LOG_DATA" "$OUT_IOT" "$LOG_IOT"
+
+# export for child scripts
+export ROOT IOT DATA RUN CFG GEM5 OUT_DATA LOG_DATA OUT_IOT LOG_IOT
+
+# minimal env log
 {
-  echo "==== uname ===="; uname -a
-  echo; echo "==== date ===="; date
-  echo; echo "==== gem5 git ===="; (git -C "$ROOT/gem5src" rev-parse --short HEAD 2>/dev/null || echo n/a)
-} >> "$LOGROOT/env.txt"
+  echo "==== env ===="
+  echo "ROOT=$ROOT"
+  echo "GEM5=$GEM5"
+  echo "CFG=$CFG"
+  echo "RUN=$RUN"
+  echo "OUT_DATA=$OUT_DATA"
+  echo "LOG_DATA=$LOG_DATA"
+  date
+} >> "$LOG_IOT/env.txt"
+
 echo "[env] READY"