weight downloading script

download_weights.bash

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+# fills huggingfaces cache by downloading safetensors files in parallel
+# usage: $ bash download_weights.bash SOME/MODEL_ID COMMIT_HASH -j4
+
+#PV="pv -cpteabm $((60*60*24))"
+PV="pv -cpteab"
+
+model_id="$1"
+revision="$2"
+shift 2
+repo_url=https://huggingface.co/"$model_id"
+clonepath="$(basename "$repo_url")"
+cachepath="${HOME}/.cache/huggingface/hub/models--${model_id//\//--}/blobs"
+if ! [ -e ${HOME}/.cache/huggingface/token ]
+then
+	huggingface-cli login || exit -1
+fi
+HF_TOKEN="$(<${HOME}/.cache/huggingface/token)"
+GIT_LFS_SKIP_SMUDGE=1 git clone https://huggingface.co/"$model_id" "$clonepath"
+mkdir -p "$cachepath"
+cd "$clonepath"
+GIT_LFS_SKIP_SMUDGE=1 git checkout "$revision" || exit -1
+filecount=$(ls *.safetensors | wc -l)
+export repo_url revision cachepath HF_TOKEN PV
+# troubleshot by adding -vx before -c in the bash command
+parallel "$@" -i bash -c \
+	'file_url="$repo_url"/resolve/"$revision"/"{}";\
+        export $(cat "{}" | tr \  =);\
+       	blobname=${oid##*:};\
+	outfile="$cachepath"/"$blobname";\
+	set pipefail;\
+	if [ "$(($(stat -c %s "$outfile" 2>/dev/null)))" != "$(($size))" ]; then\
+       		curl --silent -L --header "Authorization: Bearer $HF_TOKEN" "$file_url" |\
+       			$PV -s "$size" -N "{}" > "$outfile" 2>/dev/tty || continue;\
+	fi;\
+	echo "$blobname" "$outfile"'\
+       	-- *.safetensors |
+		$PV -l -s "$filecount" -N "$clonepath" 2>/dev/tty |
+		sha256sum -c && echo SUCCESS || { echo ERROR try again; false; }