initial commit

pipelineSimulation/pipeline_sim.sh

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+#!/usr/bin/env bash
+set -eu
+
+# --- Paths (match your cache script style) ---
+export GEM5=/home/carlos/projects/gem5/gem5src/gem5
+export RUN=/home/carlos/projects/gem5/gem5-run
+export OUTROOT=/home/carlos/projects/gem5/gem5-data/results
+
+# Workload (reuse your memtouch; swap for any x86 bin you like)
+CMD="$RUN/memtouch/memtouch"
+[ -x "$CMD" ] || CMD="/bin/ls"
+
+# Convenience
+BIN="$GEM5/build/X86/gem5.opt"
+SEPY="$GEM5/configs/deprecated/example/se.py"
+
+# ------------- 1) Baseline O3 run -------------
+OUT="$OUTROOT/pipeline/o3-baseline"
+mkdir -p "$OUT"
+"$BIN" \
+  --outdir="$OUT" \
+  "$SEPY" \
+  --cmd="$CMD" \
+  --cpu-type=DerivO3CPU \
+  --cpu-clock=2GHz --sys-clock=2GHz \
+  --caches --l2cache \
+  --l1i_size=32kB --l1d_size=32kB --l2_size=1MB \
+  --maxinsts=200000000
+
+echo "[baseline] stats: $OUT/stats.txt"
+awk '
+/simInsts/ {I=$2}
+/system\.cpu\.numCycles/ {C=$2}
+END{if(C>0) printf("Baseline IPC = %.3f  (insts=%s cycles=%s)\n", I/C, I, C)}' \
+  "$OUT/stats.txt"
+
+# ------------- 2) Cycle-by-cycle trace -------------
+OUT="$OUTROOT/pipeline/o3-trace"
+mkdir -p "$OUT"
+"$BIN" \
+  --outdir="$OUT" \
+  --debug-flags=O3CPU,Fetch,Decode,Rename,IEW,Commit,Branch,Activity \
+  --debug-file=pipe.trace \
+  "$SEPY" \
+  --cmd="$CMD" \
+  --cpu-type=DerivO3CPU \
+  --cpu-clock=2GHz --sys-clock=2GHz \
+  --caches --l2cache \
+  --maxinsts=5000000
+
+echo "[trace] debug trace: $OUT/pipe.trace"
+echo "[trace] quick peek:"
+grep -E 'Fetch|Decode|Rename|IEW|Commit|Branch' "$OUT/pipe.trace" | head -60
+
+echo "[trace] stage/queue highlights:"
+egrep 'iq|ROB|LQ|SQ|idleCycles' "$OUT/stats.txt" | sed -n '1,200p'
+