Abstract:
:Conventional digital computers can execute advanced operations by a sequence of elementary Boolean functions of 2 or more bits. As a result, complicated tasks such as solving a linear system or solving a differential equation require a large number of computing steps and an extensive use of memory units to store individual bits. To accelerate the execution of such advanced tasks, in-memory computing with resistive memories provides a promising avenue, thanks to analog data storage and physical computation in the memory. Here, we show that a cross-point array of resistive memory devices can directly solve a system of linear equations, or find the matrix eigenvectors. These operations are completed in just one single step, thanks to the physical computing with Ohm's and Kirchhoff's laws, and thanks to the negative feedback connection in the cross-point circuit. Algebraic problems are demonstrated in hardware and applied to classical computing tasks, such as ranking webpages and solving the Schrödinger equation in one step.
journal_name
Proc Natl Acad Sci U S Aauthors
Sun Z,Pedretti G,Ambrosi E,Bricalli A,Wang W,Ielmini Ddoi
10.1073/pnas.1815682116subject
Has Abstractpub_date
2019-03-05 00:00:00pages
4123-4128issue
10eissn
0027-8424issn
1091-6490pii
1815682116journal_volume
116pub_type
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