Data Dependencies A dependency type that can cause a stall.

Data Dependencies A dependency type that can cause a stall. RAW – Read After Write

Data Dependencies A dependency that causes a stall.

Data Dependencies A dependency that causes a stall. Hazard

Data Dependencies A technique for removing WAW and WAR dependencies

Data Dependencies A technique for removing WAW and WAR dependencies Register Renaming

Data Dependencies A software technique for reducing RAW hazards

Data Dependencies A software technique for reducing RAW hazards Instruction Reordering Loop Unrolling

Data Dependencies A hardware technique for reducing RAW hazards

Data Dependencies A hardware technique for reducing RAW hazards Data Forwarding Out of order execution

Data Dependencies The type of dependency between these two instructions: lw $1, 0($2) sw $1, 0($3)

Data Dependencies The type of dependency between these two instructions: lw $1, 0($2) sw $1, 0($3) RAW

Data Dependencies The reason WAW and WAR dependencies hurt performance

Data Dependencies The reason WAW and WAR dependencies hurt performance They limit instruction reordering

Data Dependencies Limiting factor in hardware register renaming

Data Dependencies Limiting factor in hardware register renaming Number of physical registers

Data Dependencies Limiting factor in software register renaming

Data Dependencies Limiting factor in hardware register renaming Number of architected registers (registers in ISA or assembly)