Abstract: Systems and methods for mitigating defects in a crossbar-based computing environment are disclosed. In some implementations, an apparatus comprises: a first row wire; a second row wire having a defective device; and a crossbar array configured to receive a first input signal. The defective device is associated with a defect pattern; the first row wire and the second row wire are located within the crossbar array; and the first input signal is configured to be provided to the first row wire. The apparatus further comprises a shuffling module connected to the crossbar array and configured to divert the input signal from the first row wire to the second row wire in accordance with a determination that the defect pattern is within a predefined approximation to a target circuit pattern associated with the first input signal.

Abstract: Systems and methods for implementing a multi-layer neural network using crossbar arrays are disclosed. In some implementations, an apparatus comprises: a plurality of first devices, a plurality of second devices, and a plurality of first flow controllers connecting the plurality of first devices and the plurality of second devices. Each flow controller in the plurality of first flow controllers is independently controlled from other flow controller in the plurality of first flow controllers. In some implementations, the apparatus further comprises: a plurality of third devices; a plurality of second flow controllers connecting the plurality of second devices and the plurality of third devices; and a first common ground line separating the plurality of first flow controllers and the plurality of second flow controllers. Each of the plurality of second flow controllers is independent of each of the plurality of first flow controllers.

Abstract: Crossbar arrays with reduced disturbance and methods for programming the same are disclosed. In some implementations, an apparatus comprises: a plurality of rows; a plurality of first columns; a plurality of second columns; a plurality of devices. Each of the plurality of devices is connected among one of the plurality of rows, one of the plurality of first columns, and one of the plurality of second columns. The device further comprises a shared end on the plurality of first columns or the plurality of the second columns connecting to the plurality of the devices in the same row or column; the shared end is grounding or holds a stable voltage potential. In some implementations, one of the devices is: a RRAM, a floating date, a phase change device, an SRAM, a memristor, or a device with tunable resistance. In some implementations the stable voltage potential is a constant DC voltage.