dmatest Command

KCU1500 Board User Guide (UG1260)

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1.5 English

Use the xbsak dmatest command to confirm that there are no issues accessing the DDR device memory from the host, or to ensure that the path from the host to PCIe to device DDR and corresponding reverse path DDR to device to PCIe to host are still working and functioning as expected.

The xbsak dmatest command also provides a bandwidth test/benchmark and confirmation that the board and host computer are operating at the optimum speed. The maximum performance is achieved with Gen3 by 16 lanes and write speeds of around 7 GB/s and read speeds of around 11 GB/s.