  In this prompt report, we present the basic performance evaluation of Intel
Optane Data Center Persistent Memory Module (Optane DCPMM), which is the first
commercially-available, byte-addressable non-volatile memory modules released
in April 2019. Since at the moment of writing only a few reports on its
performance were published, this letter is intended to complement other
performance studies. Through experiments using our own measurement tools, we
obtained that the latency of random read-only access was approximately 374 ns.
That of random writeback-involving access was 391 ns. The bandwidths of
read-only and writeback-involving access for interleaved memory modules were
approximately 38 GB/s and 3 GB/s, respectively.
