VMULPS (YMM, YMM, M256) - Port Usage (IACA 2.3)
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Backend. Port0
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 11.0 0.0 | 0.0 | 0.5 1.0 | 0.5 1.0 | 0.0 | 0.0 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm2, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm5, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm6, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm7, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm8, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm9, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm10, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm11, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm12, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm2, xmm3, xmm4
| 2 | 1.0 | | 0.5 1.0 | 0.5 1.0 | | | CP | vmulps ymm0, ymm1, ymmword ptr [r14]
Total Num Of Uops: 12
⇨ One μop that can only use port '0'
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 6.00 Cycles Throughput Bottleneck: Backend. Port2_DATA, Port3_DATA
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 1.0 0.0 | 0.0 | 5.5 6.0 | 5.5 6.0 | 0.0 | 0.0 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r8w, word ptr [r14+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r9w, word ptr [r14+0x42]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r10w, word ptr [r14+0x44]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r11w, word ptr [r14+0x46]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r12w, word ptr [r14+0x48]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov bx, word ptr [r14+0x4a]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov cx, word ptr [r14+0x4c]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov dx, word ptr [r14+0x4e]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r8w, word ptr [r14+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r9w, word ptr [r14+0x42]
| 2 | 1.0 | | 0.5 1.0 | 0.5 1.0 | | | CP | vmulps ymm0, ymm1, ymmword ptr [r14]
Total Num Of Uops: 12
⇨ One μop that can only use ports {'2', '3'}
With an indexed addressing mode
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Backend. Port0
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 11.0 0.0 | 0.0 | 0.5 1.0 | 0.5 1.0 | 0.0 | 0.0 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm2, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm5, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm6, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm7, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm8, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm9, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm10, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm11, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm12, xmm3, xmm4
| 1 | 1.0 | | | | | | CP | vcvtss2sd xmm2, xmm3, xmm4
| 2 | 1.0 | | 0.5 1.0 | 0.5 1.0 | | | CP | vmulps ymm0, ymm1, ymmword ptr [r14+r13*1]
Total Num Of Uops: 12
⇨ One μop that can only use port '0'
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 6.00 Cycles Throughput Bottleneck: Backend. Port2_DATA, Port3_DATA
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 1.0 0.0 | 0.0 | 5.5 6.0 | 5.5 6.0 | 0.0 | 0.0 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r8w, word ptr [r14+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r9w, word ptr [r14+0x42]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r10w, word ptr [r14+0x44]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r11w, word ptr [r14+0x46]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r12w, word ptr [r14+0x48]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov bx, word ptr [r14+0x4a]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov cx, word ptr [r14+0x4c]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov dx, word ptr [r14+0x4e]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r8w, word ptr [r14+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | mov r9w, word ptr [r14+0x42]
| 2 | 1.0 | | 0.5 1.0 | 0.5 1.0 | | | CP | vmulps ymm0, ymm1, ymmword ptr [r14+r13*1]
Total Num Of Uops: 12
⇨ One μop that can only use ports {'2', '3'}