fix small bug with params logging and batch size

runs/scaling_laws.sh

@@ -8,7 +8,7 @@ FLOPS_BUDGETS=(
     4.64e18
     1e19
 )
-DEPTHS=(8 10 12 14 16 18 20)
+DEPTHS=(10 12 14 16 18 20)
 
 NPROC_PER_NODE="${NPROC_PER_NODE:-8}"
 WANDB_RUN="${WANDB_RUN:-scaling_${LABEL}}"
@@ -60,6 +60,15 @@ for flops in "${FLOPS_BUDGETS[@]}"; do
         # Unique tag for this run
         TAG="scaling_${flops}_d${d}"
 
+        # Reduce --device-batch-size to avoid OOM at larger depths
+        if [ $d -ge 28 ]; then
+            DEVICE_BATCH_SIZE_ARG="--device-batch-size=8"
+        elif [ $d -ge 20 ]; then
+            DEVICE_BATCH_SIZE_ARG="--device-batch-size=16"
+        else
+            DEVICE_BATCH_SIZE_ARG="--device-batch-size=32"
+        fi
+
         # Record start time
         START_TIME=$(date +%s)
 
@@ -77,6 +86,7 @@ for flops in "${FLOPS_BUDGETS[@]}"; do
             --core-metric-max-per-task=-1 \
             --sample-every=-1 \
             --save-every=-1 \
+            $DEVICE_BATCH_SIZE_ARG \
             2>&1 | tee "$RESULTS_DIR/${TAG}_train.log"
 
         END_TIME=$(date +%s)
@@ -96,8 +106,9 @@ for flops in "${FLOPS_BUDGETS[@]}"; do
         PARAMS_TOTAL=$(grep "^total " "$LOG_FILE" | tail -1 | grep -oP '[\d,]+' | tr -d ',')
 
         NUM_ITERS=$(grep "Calculated number of iterations" "$LOG_FILE" | tail -1 | sed 's/.*: //' | tr -d ',')
-        # Calculate tokens trained (iterations * batch_size, default 524288)
-        TOKENS_TRAINED=$((NUM_ITERS * 524288))
+        # Extract actual batch size from log (auto-computed, varies by model size)
+        BATCH_SIZE=$(grep "Total batch size" "$LOG_FILE" | tail -1 | grep -oP 'Total batch size \K[\d,]+' | tr -d ',')
+        TOKENS_TRAINED=$((NUM_ITERS * BATCH_SIZE))
         # Model dim
         MODEL_DIM=$((d * 64))
         # Val BPB from final eval