\begin{tikzpicture}
    \pgfplotstableread[col sep=comma]{plots/speedup_tables/vector.csv}\csv
    \begin{axis}[
            width=0.8\columnwidth,
            height=4cm,
            ybar=1pt,
            bar width = 5pt,
            ymin=0,
            ymax=20,
            ymajorgrids,
            ylabel={Speedup},
            tick pos=left,
            xtick=data,
            xticklabels from table={\csv}{level},
            enlarge x limits=0.25,
            legend style={
                at={(current bounding box.south-|current axis.south)},
                anchor=north,
                legend columns=-1,
                draw=none,
                /tikz/every even column/.append style={column sep=0.5cm}
            },
        ]
        \addplot[fill=_blue!90] table [x expr=\coordindex, y={vadd}]{\csv};
        \addlegendentry{VADD}

        \addplot[fill=_orange!90] table [x expr=\coordindex, y={vmul}]{\csv};
        \addlegendentry{VMUL}

        \addplot[fill=_yellow!90] table [x expr=\coordindex, y={haxpy}]{\csv};
        \addlegendentry{HAXPY}
    \end{axis}
\end{tikzpicture}