  Efficient IO techniques are crucial in high-performance graph processing
frameworks like Gunrock and Hornet, as fast graph loading can help minimize
processing time and reduce system/cloud usage charges. This research study
presents approaches for efficiently reading an Edgelist from a text file and
converting it to a Compressed Sparse Row (CSR) representation. On a server with
dual 16-core Intel Xeon Gold 6226R processors and Seagate Exos 10e2400 HDDs,
our approach, which we term as GVEL, outperforms Hornet, Gunrock, and PIGO by
significant margins in CSR reading, exhibiting an average speedup of 78x, 112x,
and 1.8x, respectively. For Edgelist reading, GVEL is 2.6x faster than PIGO on
average, and achieves a Edgelist read rate of 1.9 billion edges/s. For every
doubling of threads, GVEL improves performance at an average rate of 1.9x and
1.7x for reading Edgelist and reading CSR respectively.
