initial commit

integratedAnalysis/run_integrated.sh

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+#!/bin/bash
+set -eu
+
+###############################################################################
+# Integrated ILP experiment: Branch Prediction × Superscalar Width × SMT
+# Layout matches your environment.
+###############################################################################
+
+# --- Paths (adapt to your tree if needed) ------------------------------------
+GEM5=/home/carlos/projects/gem5/gem5src/gem5
+BIN="$GEM5/build/X86/gem5.opt"
+SE="$GEM5/configs/deprecated/example/se.py"
+
+# Workloads for SMT threads (use your binaries/args here).
+# For SMT>1 we pass them joined with ';' so se.py creates multiple thread contexts
+CMD1=/home/carlos/projects/gem5/gem5-run/memtouch/memtouch
+CMD2=/home/carlos/projects/gem5/gem5-run/memtouch/memtouch
+CMD3=/bin/ls
+CMD4=/bin/ls
+
+ROOT=/home/carlos/projects/gem5/gem5-data/results/integrated
+mkdir -p "$ROOT"
+
+# --- Global constants (kept fixed across runs to be comparable) --------------
+MAXI=20000000      # limit committed instructions per run (finish in reasonable time)
+L1I=32kB; L1D=32kB; L2=1MB    # keep memory hierarchy constant across runs
+
+# NOTE: Use `$SE --list-bp-types` to confirm these names in your build.
+BP_LIST="LocalBP BiModeBP TournamentBP LTAGE"
+W_LIST="1 2 4"     # superscalar widths (fetch/decode/rename/issue/commit)
+T_LIST="1 2 4"     # SMT hardware threads on ONE physical core
+
+# --- Helper: build command string for T threads -------------------------------
+mk_cmds () {
+  T="$1"
+  case "$T" in
+    1) echo "$CMD1" ;;
+    2) echo "$CMD1;$CMD2" ;;
+    4) echo "$CMD1;$CMD2;$CMD3;$CMD4" ;;
+    *) echo "$CMD1" ;;
+  esac
+}
+
+for BP in $BP_LIST; do
+  for W in $W_LIST; do
+    # Scale the core buffers with width (simple heuristic).
+    ROB=$((W*64))   # Reorder Buffer entries
+    IQ=$((W*32))    # Issue Queue entries
+    LQ=$((W*32))    # Load Queue
+    SQ=$((W*32))    # Store Queue
+
+    for T in $T_LIST; do
+      # Directory name encodes the three dimensions
+      OUT="$ROOT/BP-${BP}/W${W}/SMT${T}"
+      mkdir -p "$OUT"
+      echo "[*] BP=$BP  W=$W  SMT=$T  ->  $OUT"
+
+      # Build per-run command list for thread contexts
+      CMDS="$(mk_cmds "$T")"
+
+      # ------------------------- RUN -----------------------------------------
+      # Key flags explained (use these lines in your report):
+      #   --bp-type=<BP>                 choose branch predictor implementation
+      #   --caches --l2cache             enable private L1I/L1D and a unified L2
+      #   --l1i_size/--l1d_size/--l2_size keep memory fixed across runs
+      #   --maxinsts=<N>                 stop after N committed insts (fairness)
+      #   --smt --num-cpus=1             single O3 core exposing T HW threads
+      #   --param system.cpu[0].*        set per-CPU (index 0) microarch widths
+      #   fetch/decode/rename/issue/commitWidth = W (superscalar width)
+      #   ROB/IQ/LQ/SQ entries scaled with W to avoid artificial stalls
+      # -----------------------------------------------------------------------
+
+      "$BIN" --outdir="$OUT" \
+        "$SE" \
+        --cmd="$CMDS" \
+        --cpu-type=DerivO3CPU \
+        --caches --l2cache \
+        --l1i_size="$L1I" --l1d_size="$L1D" --l2_size="$L2" \
+        --bp-type="$BP" \
+        --maxinsts="$MAXI" \
+        --num-cpus=1 $([ "$T" -gt 1 ] && echo --smt) \
+        \
+        --param "system.cpu[0].fetchWidth=$W" \
+        --param "system.cpu[0].decodeWidth=$W" \
+        --param "system.cpu[0].renameWidth=$W" \
+        --param "system.cpu[0].issueWidth=$W" \
+        --param "system.cpu[0].commitWidth=$W" \
+        --param "system.cpu[0].numROBEntries=$ROB" \
+        --param "system.cpu[0].numIQEntries=$IQ" \
+        --param "system.cpu[0].LQEntries=$LQ" \
+        --param "system.cpu[0].SQEntries=$SQ" \
+        > "$OUT/simout" 2> "$OUT/simerr"
+
+      if [ -s "$OUT/stats.txt" ]; then
+        echo "    ok: $OUT/stats.txt"
+      else
+        echo "    FAILED/RUNNING — see $OUT/simerr"
+      fi
+    done
+  done
+done
+
+echo "[*] Integrated sweep complete."
+