Computer system with concurrent direct memory access

A computer system with concurrent direct memory access is provided including a computer node having a processor interface bus and a cut-through network interface controller installed on the processor interface bus. A data transfer is initiated through the cut-through network interface controller by starting a direct memory access to move data from a memory to a transmit buffer in the cut-through network interface controller and a network interface controller physical interface transmitting the data, to the computer node attached to a reliable network, before all of the data is in the transmit buffer.