| Loop Id: 58 | Module: attention-clang-znver5-256 | Source: attention_v2.cpp:55-56 | Coverage: 0.23% |
|---|
| Loop Id: 58 | Module: attention-clang-znver5-256 | Source: attention_v2.cpp:55-56 | Coverage: 0.23% |
|---|
0x6969 VMOVSS (%R14,%RBX,4),%XMM0 [2] |
0x696f VSUBSS %XMM2,%XMM0,%XMM0 |
0x6973 VZEROUPPER |
0x6976 CALL 1160 <expf@plt> |
0x697b VMOVAPS 0x120(%RSP),%XMM1 [1] |
0x6984 VMOVAPS 0x170(%RSP),%XMM2 [1] |
0x698d MOV 0x30(%RSP),%RSI [1] |
0x6992 VDIVSS %XMM1,%XMM0,%XMM0 |
0x6996 VMOVSS %XMM0,(%R15,%RBX,4) [3] |
0x699c INC %RBX |
0x699f CMP %RBX,%RSI |
0x69a2 JNE 6969 |
/home/eoseret/llm-attention/attention_v2.cpp: 55 - 56 |
-------------------------------------------------------------------------------- |
55: for (int idx = 0; idx <= row; ++idx) //vectorised |
56: P[row * N + idx] = expf(S_row[idx] - max_val) / sum; |
| Coverage (%) | Name | Source Location | Module |
|---|
| min | med | avg | max |
|---|---|---|---|
| Percentile Index | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
|---|---|---|---|---|---|---|---|---|---|---|
| Value |
| min | med | avg | max |
|---|---|---|---|
| Percentile Index | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
|---|---|---|---|---|---|---|---|---|---|---|
| Value |
| Path / |
| Metric | Value |
|---|---|
| CQA speedup if no scalar integer | 1.00 |
| CQA speedup if FP arith vectorized | 2.46 |
| CQA speedup if fully vectorized | 14.55 |
| CQA speedup if no inter-iteration dependency | NA |
| CQA speedup if next bottleneck killed | 1.67 |
| Bottlenecks | P10, P11, |
| Function | main |
| Source | attention_v2.cpp:55-56 |
| Source loop unroll info | unrolled by 8 |
| Source loop unroll confidence level | max |
| Unroll/vectorization loop type | peel/tail |
| Unroll factor | 1 |
| CQA cycles | 2.50 |
| CQA cycles if no scalar integer | 2.50 |
| CQA cycles if FP arith vectorized | 1.02 |
| CQA cycles if fully vectorized | 0.17 |
| Front-end cycles | 1.50 |
| P0 cycles | 0.33 |
| P1 cycles | 0.33 |
| P2 cycles | 0.33 |
| P3 cycles | 0.33 |
| P4 cycles | 0.33 |
| P5 cycles | 0.33 |
| P6 cycles | 1.25 |
| P7 cycles | 1.25 |
| P8 cycles | 1.25 |
| P9 cycles | 1.25 |
| P10 cycles | 0.50 |
| P11 cycles | 0.50 |
| P12 cycles | 0.50 |
| P13 cycles | 0.50 |
| P14 cycles | 0.50 |
| P15 cycles | 0.50 |
| DIV/SQRT cycles | 2.50 |
| Inter-iter dependencies cycles | 1 |
| FE+BE cycles (UFS) | NA |
| Stall cycles (UFS) | NA |
| Nb insns | 12.00 |
| Nb uops | 12.00 |
| Nb loads | 4.00 |
| Nb stores | 1.00 |
| Nb stack references | 3.00 |
| FLOP/cycle | 0.80 |
| Nb FLOP add-sub | 1.00 |
| Nb FLOP mul | 0.00 |
| Nb FLOP fma | 0.00 |
| Nb FLOP div | 1.00 |
| Nb FLOP rcp | 0.00 |
| Nb FLOP sqrt | 0.00 |
| Nb FLOP rsqrt | 0.00 |
| Bytes/cycle | 19.20 |
| Bytes prefetched | 0.00 |
| Bytes loaded | 44.00 |
| Bytes stored | 4.00 |
| Stride 0 | 1.00 |
| Stride 1 | 2.00 |
| Stride n | 0.00 |
| Stride unknown | 0.00 |
| Stride indirect | 0.00 |
| Vectorization ratio all | 42.86 |
| Vectorization ratio load | 66.67 |
| Vectorization ratio store | 0.00 |
| Vectorization ratio mul | NA |
| Vectorization ratio add_sub | 0.00 |
| Vectorization ratio fma | NA |
| Vectorization ratio div_sqrt | 0.00 |
| Vectorization ratio other | 100.00 |
| Vector-efficiency ratio all | 14.29 |
| Vector-efficiency ratio load | 18.75 |
| Vector-efficiency ratio store | 6.25 |
| Vector-efficiency ratio mul | NA |
| Vector-efficiency ratio add_sub | 6.25 |
| Vector-efficiency ratio fma | NA |
| Vector-efficiency ratio div_sqrt | 6.25 |
| Vector-efficiency ratio other | 25.00 |
| Metric | Value |
|---|---|
| CQA speedup if no scalar integer | 1.00 |
| CQA speedup if FP arith vectorized | 2.46 |
| CQA speedup if fully vectorized | 14.55 |
| CQA speedup if no inter-iteration dependency | NA |
| CQA speedup if next bottleneck killed | 1.67 |
| Bottlenecks | P10, P11, |
| Function | main |
| Source | attention_v2.cpp:55-56 |
| Source loop unroll info | unrolled by 8 |
| Source loop unroll confidence level | max |
| Unroll/vectorization loop type | peel/tail |
| Unroll factor | 1 |
| CQA cycles | 2.50 |
| CQA cycles if no scalar integer | 2.50 |
| CQA cycles if FP arith vectorized | 1.02 |
| CQA cycles if fully vectorized | 0.17 |
| Front-end cycles | 1.50 |
| P0 cycles | 0.33 |
| P1 cycles | 0.33 |
| P2 cycles | 0.33 |
| P3 cycles | 0.33 |
| P4 cycles | 0.33 |
| P5 cycles | 0.33 |
| P6 cycles | 1.25 |
| P7 cycles | 1.25 |
| P8 cycles | 1.25 |
| P9 cycles | 1.25 |
| P10 cycles | 0.50 |
| P11 cycles | 0.50 |
| P12 cycles | 0.50 |
| P13 cycles | 0.50 |
| P14 cycles | 0.50 |
| P15 cycles | 0.50 |
| DIV/SQRT cycles | 2.50 |
| Inter-iter dependencies cycles | 1 |
| FE+BE cycles (UFS) | NA |
| Stall cycles (UFS) | NA |
| Nb insns | 12.00 |
| Nb uops | 12.00 |
| Nb loads | 4.00 |
| Nb stores | 1.00 |
| Nb stack references | 3.00 |
| FLOP/cycle | 0.80 |
| Nb FLOP add-sub | 1.00 |
| Nb FLOP mul | 0.00 |
| Nb FLOP fma | 0.00 |
| Nb FLOP div | 1.00 |
| Nb FLOP rcp | 0.00 |
| Nb FLOP sqrt | 0.00 |
| Nb FLOP rsqrt | 0.00 |
| Bytes/cycle | 19.20 |
| Bytes prefetched | 0.00 |
| Bytes loaded | 44.00 |
| Bytes stored | 4.00 |
| Stride 0 | 1.00 |
| Stride 1 | 2.00 |
| Stride n | 0.00 |
| Stride unknown | 0.00 |
| Stride indirect | 0.00 |
| Vectorization ratio all | 42.86 |
| Vectorization ratio load | 66.67 |
| Vectorization ratio store | 0.00 |
| Vectorization ratio mul | NA |
| Vectorization ratio add_sub | 0.00 |
| Vectorization ratio fma | NA |
| Vectorization ratio div_sqrt | 0.00 |
| Vectorization ratio other | 100.00 |
| Vector-efficiency ratio all | 14.29 |
| Vector-efficiency ratio load | 18.75 |
| Vector-efficiency ratio store | 6.25 |
| Vector-efficiency ratio mul | NA |
| Vector-efficiency ratio add_sub | 6.25 |
| Vector-efficiency ratio fma | NA |
| Vector-efficiency ratio div_sqrt | 6.25 |
| Vector-efficiency ratio other | 25.00 |
| Path / |
| Function | main |
| Source file and lines | attention_v2.cpp:55-56 |
| Module | attention-clang-znver5-256 |
| nb instructions | 12 |
| nb uops | 12 |
| loop length | 59 |
| used x86 registers | 5 |
| used mmx registers | 0 |
| used xmm registers | 3 |
| used ymm registers | 0 |
| used zmm registers | 0 |
| nb stack references | 3 |
| micro-operation queue | 1.50 cycles |
| front end | 1.50 cycles |
| P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | P15 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| uops | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 1.25 | 1.25 | 1.25 | 1.25 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| cycles | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 1.25 | 1.25 | 1.25 | 1.25 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Cycles executing div or sqrt instructions | 2.50 |
| Longest recurrence chain latency (RecMII) | 1.00 |
| Front-end | 1.50 |
| Dispatch | 1.25 |
| DIV/SQRT | 2.50 |
| Data deps. | 1.00 |
| Overall L1 | 2.50 |
| all | 100% |
| load | NA (no load vectorizable/vectorized instructions) |
| store | NA (no store vectorizable/vectorized instructions) |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | NA (no add-sub vectorizable/vectorized instructions) |
| fma | NA (no fma vectorizable/vectorized instructions) |
| other | 100% |
| all | 33% |
| load | 66% |
| store | 0% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 0% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 0% |
| other | NA (no other vectorizable/vectorized instructions) |
| all | 42% |
| load | 66% |
| store | 0% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 0% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 0% |
| other | 100% |
| all | 25% |
| load | NA (no load vectorizable/vectorized instructions) |
| store | NA (no store vectorizable/vectorized instructions) |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | NA (no add-sub vectorizable/vectorized instructions) |
| fma | NA (no fma vectorizable/vectorized instructions) |
| other | 25% |
| all | 12% |
| load | 18% |
| store | 6% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 6% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 6% |
| other | NA (no other vectorizable/vectorized instructions) |
| all | 14% |
| load | 18% |
| store | 6% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 6% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 6% |
| other | 25% |
| Instruction | Nb FU | P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | P15 | Latency | Recip. throughput | Vectorization |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VMOVSS (%R14,%RBX,4),%XMM0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.50 | scal (6.3%) |
| VSUBSS %XMM2,%XMM0,%XMM0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 2 | 0.50 | scal (6.3%) |
| VZEROUPPER | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | vect (25.0%) |
| CALL 1160 <expf@plt> | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | N/A |
| VMOVAPS 0x120(%RSP),%XMM1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.50 | vect (25.0%) |
| VMOVAPS 0x170(%RSP),%XMM2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.50 | vect (25.0%) |
| MOV 0x30(%RSP),%RSI | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.25 | N/A |
| VDIVSS %XMM1,%XMM0,%XMM0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 10 | 2.50 | scal (6.3%) |
| VMOVSS %XMM0,(%R15,%RBX,4) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 1 | 0.50 | scal (6.3%) |
| INC %RBX | 1 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.17 | N/A |
| CMP %RBX,%RSI | 1 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.17 | N/A |
| JNE 6969 <main+0x3b99> | 1 | 0 | 0 | 0 | 0.33 | 0.33 | 0.33 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.33-0.50 | N/A |
| Function | main |
| Source file and lines | attention_v2.cpp:55-56 |
| Module | attention-clang-znver5-256 |
| nb instructions | 12 |
| nb uops | 12 |
| loop length | 59 |
| used x86 registers | 5 |
| used mmx registers | 0 |
| used xmm registers | 3 |
| used ymm registers | 0 |
| used zmm registers | 0 |
| nb stack references | 3 |
| micro-operation queue | 1.50 cycles |
| front end | 1.50 cycles |
| P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | P15 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| uops | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 1.25 | 1.25 | 1.25 | 1.25 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| cycles | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 1.25 | 1.25 | 1.25 | 1.25 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Cycles executing div or sqrt instructions | 2.50 |
| Longest recurrence chain latency (RecMII) | 1.00 |
| Front-end | 1.50 |
| Dispatch | 1.25 |
| DIV/SQRT | 2.50 |
| Data deps. | 1.00 |
| Overall L1 | 2.50 |
| all | 100% |
| load | NA (no load vectorizable/vectorized instructions) |
| store | NA (no store vectorizable/vectorized instructions) |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | NA (no add-sub vectorizable/vectorized instructions) |
| fma | NA (no fma vectorizable/vectorized instructions) |
| other | 100% |
| all | 33% |
| load | 66% |
| store | 0% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 0% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 0% |
| other | NA (no other vectorizable/vectorized instructions) |
| all | 42% |
| load | 66% |
| store | 0% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 0% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 0% |
| other | 100% |
| all | 25% |
| load | NA (no load vectorizable/vectorized instructions) |
| store | NA (no store vectorizable/vectorized instructions) |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | NA (no add-sub vectorizable/vectorized instructions) |
| fma | NA (no fma vectorizable/vectorized instructions) |
| other | 25% |
| all | 12% |
| load | 18% |
| store | 6% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 6% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 6% |
| other | NA (no other vectorizable/vectorized instructions) |
| all | 14% |
| load | 18% |
| store | 6% |
| mul | NA (no mul vectorizable/vectorized instructions) |
| add-sub | 6% |
| fma | NA (no fma vectorizable/vectorized instructions) |
| div/sqrt | 6% |
| other | 25% |
| Instruction | Nb FU | P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | P15 | Latency | Recip. throughput | Vectorization |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VMOVSS (%R14,%RBX,4),%XMM0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.50 | scal (6.3%) |
| VSUBSS %XMM2,%XMM0,%XMM0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 2 | 0.50 | scal (6.3%) |
| VZEROUPPER | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | vect (25.0%) |
| CALL 1160 <expf@plt> | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | N/A |
| VMOVAPS 0x120(%RSP),%XMM1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.50 | vect (25.0%) |
| VMOVAPS 0x170(%RSP),%XMM2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.50 | vect (25.0%) |
| MOV 0x30(%RSP),%RSI | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.25 | N/A |
| VDIVSS %XMM1,%XMM0,%XMM0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 10 | 2.50 | scal (6.3%) |
| VMOVSS %XMM0,(%R15,%RBX,4) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 1 | 0.50 | scal (6.3%) |
| INC %RBX | 1 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.17 | N/A |
| CMP %RBX,%RSI | 1 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.17 | N/A |
| JNE 6969 <main+0x3b99> | 1 | 0 | 0 | 0 | 0.33 | 0.33 | 0.33 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.33-0.50 | N/A |
