add the gpt2 1558M repro script too

scripts/run_gpt2_1558M.sh

@@ -0,0 +1,43 @@
+# GPT-2 (1558M) repro on FineWeb
+# 1558M parameter model on 100B tokens
+# => 6 * 1558Me6 * 100e9 = 6.966e20 ~= 1e21 capability model
+# => 100,000 steps on 1M tokens/step (1,048,576 to be precise)
+# on 8X A100 80GB SXM ($14/hr) steps in ~7s/iter
+# => training time 100,000 steps * 7s = 194.4 hours ~= 8.1 days ~= $2721.6
+
+make train_gpt2cu USE_CUDNN=1
+out_dir="log_gpt2_1558M"
+done_file="$out_dir/DONE_00100000"
+
+# in case the training stalls or crashes, loop to resume (-y 1)
+while true; do
+
+    # exit condition is that optimization has finished
+    if [ -f "$done_file" ]; then
+        echo "File $done_file exists. Exiting the loop."
+        break
+    fi
+
+    # run python dev/data/fineweb.py --version 100B to prepro data
+    # run python dev/data/hellaswag.py to prepro hellaswag eval
+    mpirun -np 8 ./train_gpt2cu \
+                -i "dev/data/fineweb100B/fineweb_train_*.bin" \
+                -j "dev/data/fineweb100B/fineweb_val_*.bin" \
+                -o $out_dir \
+                -v 250 -s 300000 -g 144 \
+                -h 1 \
+                -b 16 -t 1024 \
+                -d 1048576 \
+                -r 0 \
+                -z 1 \
+                -c 0.1 \
+                -l 0.0002 \
+                -q 0.1 \
+                -u 700 \
+                -n 2000 \
+                -x 100000 \
+                -y 1 \
+                -e "d48"
+
+    sleep 1
+done