Recent supercomputers deploy not only many-core accelerators such as GPU but also Non-Volatile Memory (NVM) such as flash memory as an external memory, in order to handle large-scale data processing for a wide range of applications. However, how to construct NVM as local disks at a low cost with large volume for heterogeneous supercomputers is not clear. In order to clarify I/O characteristics between GPU and NVM, we comparatively investigate I/O strategies on GPU and multiple mini SATA SSDs. Our preliminary results exhibit 3.06GB/s of throughput from 8 mini SATA SSDs to GPU by using RAID0 with appropriate stripe size.
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