21. It also contains two read buffers and one write buffer for streaming data to the execution units . 22. These four bits specify whether can be issued together and which execution unit they are executed by. 23. In keeping with the extremely Spartan design philosophy, for the SPU no execution units are multiply provisioned. 24. Execution units are also essential to microarchitecture.25. The execution units consist of two integer units, address units, floating-point units ( FPUs ), memory units. 26. Additionally, modern CPUs'execution units are usually pipelined. 27. The disadvantage for CMT is a greater number of idle integer execution units in a single threaded case. 28. To feed the execution units with instructions and data, there is a 16 KB two-way set virtual addresses. 29. The choice of the number of execution units , their latency and throughput is a central microarchitectural design task. 30. Integer instructions are executed in three integer execution units ( termed " fixed-point units " by IBM ).
