Customizable backup and restore from nonvolatile logic array
Design and operation of a processing device is configurable to optimize wake-up time and peak power cost during restoration of a machine state from non-volatile storage. The processing device includes a plurality of non-volatile logic element arrays configured to store a machine state represented by a plurality of volatile storage elements of the processing device. A stored machine state is read out from the plurality of non-volatile logic element arrays to the plurality of volatile storage elements. During manufacturing, a number of rows and a number of bits per row in non-volatile logic element arrays are based on a target wake up time and a peak power cost. In another approach, writing data to or reading data of the plurality of non-volatile arrays can be done in parallel, sequentially, or in any combination to optimize operation characteristics.
1. A method for customizing wake time and peak power cost during a restoration of a computing device volatile storage system state from a non-volatile array backup, the method comprising:
manufacturing a processing device having a plurality of non-volatile logic element arrays configured to store a machine state represented by a plurality of volatile storage elements of the processing device and wherein the processing device is configured to enable reading out a stored machine state from the plurality of non-volatile logic element arrays to the plurality of volatile storage elements;
wherein a particular number of rows and a particular number of bits per row in individual ones of the plurality of non-volatile logic element arrays are manufactured and/or enabled based on a target wake up time based on a time used to read data one row at a time from one of the plurality of non-volatile logic element arrays and a peak power cost based on a peak power used to read a row of a given length of bits at a same time from the one of the plurality of non-volatile logic element arrays.
2. The method of claim 1 further comprising analyzing simulations of a design of the non-volatile logic element arrays to determine peak and average power per array.
3. The method of claim 1 further comprising analyzing simulations of the computing device volatile storage system running application code for peak and average power consumption.
4. The method of claim 1 further comprising:
analyzing simulations of a design of the non-volatile logic element arrays to determine first analysis results including peak and average power per array;
analyzing simulations of the computing device volatile storage system running application code to determine second analysis results including peak and average power consumption for the computing device volatile storage system;
comparing at least aspects of the first analysis results and at least aspects of the second analysis results with the target wake up time and the peak power cost to determine a target design for the plurality of non-volatile logic element arrays.
5. The method of claim 4 wherein the comparing results with the target wake up time and the peak power cost further comprises analyzing a capacity of planned power distribution for the computing device volatile storage system and the plurality of non-volatile logic element arrays.