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  1. Oct 2020
    1. We started looking for PCI switches with multi-host support and found that none of them fit our requirements. These solutions were mostly limited to 1 host or multi-hosts, but no concurrent endpoints request mode. The second problem is the high cost of $50 or more per chip. In the Turing Pi 2, we decided to postpone experiments with PCI switches and return to this later as we mature.

      interesting discussion on trying to use PCIe as a fabric. i would have expected the focus to be on NTB to bridge pi's together & share at a high level, but they seem interested in sharing peripherals directly.