RDRAND (R64) - Throughput and Uops (IACA 2.3)


With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 8.57 Cycles       Throughput Bottleneck: Dependency chains (possibly between iterations)

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 0.5    0.5  | 0.5    0.5  | 0.0  | 1.0  | 1.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     | CP | rdrand r8
Total Num Of Uops: 5

With 13 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 112.81 Cycles       Throughput Bottleneck: Dependency chains (possibly between iterations)

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 13.0   0.0  | 13.0 | 6.5    6.5  | 6.5    6.5  | 0.0  | 13.0 | 13.0 | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r8
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r9
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r10
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r11
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r12
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r13
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand r14
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand rbx
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand rcx
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand rdx
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand rdi
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand rsi
|   5    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     | 1.0 | 1.0 |     |    | rdrand rbp
Total Num Of Uops: 65