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What sizes of data payload are supported in PCIe TLP when using DirectGMA?

Question asked by evoliptic on Aug 12, 2015
Latest reply on Sep 3, 2015 by dmitryk

Hello there,


In the transport layer packet of PCIe, there is a sub-part dedicated to data, which we call here payload (the schema of TLP we have may be found on the first page of that paper : ). Its size could vary however there is a standard size of 128 bytes, supported by all hardware normally.


I would so like to know if the GPU can handle different sizes of data in the PCIe TLP?


thanks in advance,