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setup: support CUDA_ARCHS_EXTRA env for Docker builds

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This commit is contained in:
Roland Tannous 2026-03-17 11:12:54 +00:00
commit a2c3f39e12
1 changed files with 22 additions and 7 deletions
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29
studio/setup.sh
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@ -433,19 +433,34 @@ rm -rf "$LLAMA_CPP_DIR"
# Detect GPU compute capability and limit CUDA architectures
# Without this, cmake builds for ALL default archs (very slow)
CUDA_ARCHS="86"
# CUDA_ARCHS can be pre-set via env var (e.g. Docker ARG) to
# include targets not detectable at build time (no GPU access).
# We always include 86 (A10) and merge with detected GPUs.
_add_arch() {
local _a="$1"
case ";$CUDA_ARCHS;" in
*";$_a;"*) ;;
*) CUDA_ARCHS="${CUDA_ARCHS:+$CUDA_ARCHS;}$_a" ;;
esac
}
CUDA_ARCHS=""
# Merge any pre-set CUDA_ARCHS from environment
if [ -n "${CUDA_ARCHS_EXTRA:-}" ]; then
IFS=';' read -ra _env_archs <<< "$CUDA_ARCHS_EXTRA"
for _ea in "${_env_archs[@]}"; do
_ea=$(echo "$_ea" | tr -d '[:space:]')
[ -n "$_ea" ] && _add_arch "$_ea"
done
fi
# Always include sm_86 (A10)
_add_arch "86"
if command -v nvidia-smi &>/dev/null; then
# Read all GPUs, deduplicate (handles mixed-GPU hosts)
_raw_caps=$(nvidia-smi --query-gpu=compute_cap --format=csv,noheader 2>/dev/null || true)
while IFS= read -r _cap; do
_cap=$(echo "$_cap" | tr -d '[:space:]')
if [[ "$_cap" =~ ^([0-9]+)\.([0-9]+)$ ]]; then
_arch="${BASH_REMATCH[1]}${BASH_REMATCH[2]}"
# Append if not already present
case ";$CUDA_ARCHS;" in
*";$_arch;"*) ;;
*) CUDA_ARCHS="${CUDA_ARCHS:+$CUDA_ARCHS;}$_arch" ;;
esac
_add_arch "${BASH_REMATCH[1]}${BASH_REMATCH[2]}"
fi
done <<< "$_raw_caps"
fi