sing

# build bash command arguments

# allow commands from stdin (e.g. ./sing <<< "echo hi")
readstdin() {
	read -N1 -t0.5 __ && { (($? <= 128)) && {
		IFS= read -rd '' _stdin
		echo "$__$_stdin"
	}; }
}

# build args
CMD="$(readstdin)"
ARGS=()
if [[ -z "$CMD" ]]; then
	if [[ -z "$SINGUCONDA_NO_INIT_ENV" ]]; then
		ARGS+=(--init-file /ext3/env)
	fi
else
	if [[ -z "$SINGUCONDA_NO_INIT_ENV" ]]; then
		CMD="[[ -e /ext3/env ]] && . /ext3/env;$CMD"
	fi
	ARGS+=(-c "$CMD")
fi

# build singularity arguments

# check for GPUs
GPUS=$(type -p nvidia-smi >&/dev/null && nvidia-smi --query-gpu=name --format=csv,noheader)
NV=$([[ $(echo -n "$GPUS" | grep -v "No devices were found" | awk 'NF' | wc -l) -ge 1 ]] && echo '--nv')
# report GPUs
if [[ -z "$QUIET_SING" ]]; then
	[[ ! -z "$NV" ]] && echo "Detected gpus, using --nv:" && echo $GPUS && echo
	[[ ! -z "$NV" ]] || echo "No gpus detected. Use --nv for gpu bindings." && echo
fi

# get singularity arguments
SCRIPT_DIR="$(dirname ${BASH_SOURCE:-$0})"
SING_NAME="${SING_NAME:-mm-asf}"

OVERLAY="$SCRIPT_DIR/$SING_NAME.ext3"
SIF="$(cat $SCRIPT_DIR/.$SING_NAME.sifpath)"

# run singularity

singularity exec $NV $@ --overlay "${OVERLAY}:ro" --overlay "/scratch/work/ptg/EPIC-KITCHENS/rgb_frames.sqf" "$SIF" /bin/bash "${ARGS[@]}"