Register file partitioning for energy efficiency in microprocessors

This thesis is basically about energy efficient register file techniques. Register file is one of the important parts inside microprocessors. It is the smallest memory used by all the instructions for at least one time. That is the reason why they are constructed with energy consuming fast materials. Reducing energy dissipation of register file by using narrow values is the subject of this work. Narrow values method is expressing data with fewer bits than actual data width of the processor. By using narrow values, register file stores fewer bits and needs less static and dynamic energy. By the end of this work, designed register file stores data in narrow value groups and values are written to those groups according to their widths. Size of narrow value groups can be set dynamically with the needs of the program for having the same performance as normal processor. The register file which has dynamically changing narrow value groups saved 65% of energy with negligible performance loss.