[example] make gpt example directory more clear (#2353)

examples/language/gpt/gemini/run_gemini.sh

@@ -0,0 +1,24 @@
+set -x
+# distplan in ["colossalai", "zero1", "zero2", "torch_ddp", "torch_zero"]
+export DISTPAN=${DISTPAN:-"colossalai"}
+
+# The following options only valid when DISTPAN="colossalai"
+export GPUNUM=${GPUNUM:-1}
+export TPDEGREE=${TPDEGREE:-1}
+export PLACEMENT=${PLACEMENT:-"cpu"}
+export USE_SHARD_INIT=${USE_SHARD_INIT:-False}
+export BATCH_SIZE=${BATCH_SIZE:-16}
+export MODEL_TYPE=${MODEL_TYPE:-"gpt2_medium"}
+
+# export PYTHONPATH=$PWD:$PYTHONPATH
+
+mkdir -p gemini_logs
+
+torchrun --standalone --nproc_per_node=${GPUNUM} ./train_gpt_demo.py \
+--tp_degree=${TPDEGREE} \
+--model_type=${MODEL_TYPE} \
+--batch_size=${BATCH_SIZE} \
+--placement=${PLACEMENT} \
+--shardinit=${USE_SHARD_INIT} \
+--distplan=${DISTPAN} \
+2>&1 | tee ./gemini_logs/${MODEL_TYPE}_${DISTPAN}_gpu_${GPUNUM}_bs_${BATCH_SIZE}_tp_${TPDEGREE}_${PLACEMENT}.log