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The Unleashed board has a performance similar to a Raspberry Pi 3 in cpu terms but it's biggest bottleneck is that the SD card is running on a SPI bus where it
by carlosedp 7y ago
The Unleashed board has a performance similar to a Raspberry Pi 3 in cpu terms but it's biggest bottleneck is that the SD card is running on a SPI bus where it gets something like 2MB/s. This is due to having the complete SOC as opensource and the SD card association not allowing open source IP for it's interface.
- 0815test 7y agoI think there's some degree of compatibility between SD-card and MMC-card standards, and that the latter are comparatively more open. Surely that could solve the open-IP issue?
- q3k 7y agoLast time I looked both MMC and SD were JEDEC standards available under the same terms?
- opencl 7y agoIt does have gigabit ethernet and there's also an expansion board with SATA and PCIe but that's another $2000 because it's using an enormous FPGA.
- rwmj 7y agoAlthough it won't solve the general performance problems (it's a slow rocketchip impl) you should be using NBD root. That's what we use for the Fedora/RISC-V builders.