| Loop Id: 32 | Module: attention-gcc-native | Source: attention_v2.cpp:47-48 | Coverage: 0.05% |
|---|
| Loop Id: 32 | Module: attention-gcc-native | Source: attention_v2.cpp:47-48 | Coverage: 0.05% |
|---|
0x411aa0 LD1W {Z26.S}, P7/Z, [X0, MUL VL] [1] |
0x411aa4 LD1W {Z27.S}, P7/Z, [X0, #1, MUL VL] [1] |
0x411aa8 ADD W1, W1, W25 |
0x411aac FMAXNM Z29.S, P7/M, Z29.S, Z26.S |
0x411ab0 FMAXNM Z28.S, P7/M, Z28.S, Z27.S |
0x411ab4 LD1W {Z26.S}, P7/Z, [X0, #2, MUL VL] [1] |
0x411ab8 LD1W {Z27.S}, P7/Z, [X0, #3, MUL VL] [1] |
0x411abc FMAXNM Z31.S, P7/M, Z31.S, Z26.S |
0x411ac0 ADD X0, X0, X26 |
0x411ac4 FMAXNM Z30.S, P7/M, Z30.S, Z27.S |
0x411ac8 CMP W23, W1 |
0x411acc B.CS 411aa0 |
/home/eoseret/llm-attention/attention_v2.cpp: 47 - 48 |
-------------------------------------------------------------------------------- |
47: for (int idx = 0; idx <= row; ++idx) // vectorised |
48: if (S_row[idx] > max_val) max_val = S_row[idx]; |
| Coverage (%) | Name | Source Location | Module |
|---|---|---|---|
| ►100.00+ | main | attention_v2.cpp:283 | attention-gcc-native |
| ○ | __libc_start_call_main | libc.so.6 | |
| ○ | __libc_start_main | libc.so.6 | |
| ○ | _start | stl_vector.h:1920 | attention-gcc-native |
| 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 | 1.00 |
| CQA speedup if fully vectorized | 1.00 |
| CQA speedup if no inter-iteration dependency | NA |
| CQA speedup if next bottleneck killed | 1.33 |
| Bottlenecks | P6, P7, P10, P11, |
| Function | softmax(float const*, float*, float*, int) |
| Source | attention_v2.cpp:47-48 |
| Source loop unroll info | unrolled by 4 |
| Source loop unroll confidence level | max |
| Unroll/vectorization loop type | NA |
| Unroll factor | 4 |
| CQA cycles | 2.00 |
| CQA cycles if no scalar integer | 2.00 |
| CQA cycles if FP arith vectorized | 2.00 |
| CQA cycles if fully vectorized | 2.00 |
| Front-end cycles | 1.50 |
| P0 cycles | 0.50 |
| P1 cycles | 0.50 |
| P2 cycles | 0.75 |
| P3 cycles | 0.75 |
| P4 cycles | 0.75 |
| P5 cycles | 0.75 |
| P6 cycles | 2.00 |
| P7 cycles | 2.00 |
| P8 cycles | 0.00 |
| P9 cycles | 0.00 |
| P10 cycles | 2.00 |
| P11 cycles | 2.00 |
| P12 cycles | 0.00 |
| P13 cycles | 0.00 |
| P14 cycles | 0.00 |
| DIV/SQRT cycles | 0.00 |
| Inter-iter dependencies cycles | 2 |
| FE+BE cycles (UFS) | NA |
| Stall cycles (UFS) | NA |
| Nb insns | 12.00 |
| Nb uops | 12.00 |
| Nb loads | NA |
| Nb stores | 0.00 |
| Nb stack references | 0.00 |
| FLOP/cycle | 0.00 |
| Nb FLOP add-sub | 0.00 |
| Nb FLOP mul | 0.00 |
| Nb FLOP fma | 0.00 |
| Nb FLOP div | 0.00 |
| Nb FLOP rcp | 0.00 |
| Nb FLOP sqrt | 0.00 |
| Nb FLOP rsqrt | 0.00 |
| Bytes/cycle | 64.00 |
| Bytes prefetched | 0.00 |
| Bytes loaded | 128.00 |
| Bytes stored | 0.00 |
| Stride 0 | 0.00 |
| Stride 1 | 0.00 |
| Stride n | 0.00 |
| Stride unknown | 1.00 |
| Stride indirect | 0.00 |
| Vectorization ratio all | 100.00 |
| Vectorization ratio load | 100.00 |
| Vectorization ratio store | NA |
| Vectorization ratio mul | NA |
| Vectorization ratio add_sub | NA |
| Vectorization ratio fma | NA |
| Vectorization ratio div_sqrt | NA |
| Vectorization ratio other | 100.00 |
| Vector-efficiency ratio all | 100.00 |
| Vector-efficiency ratio load | 100.00 |
| Vector-efficiency ratio store | NA |
| Vector-efficiency ratio mul | NA |
| Vector-efficiency ratio add_sub | NA |
| Vector-efficiency ratio fma | NA |
| Vector-efficiency ratio div_sqrt | NA |
| Vector-efficiency ratio other | 100.00 |
| Metric | Value |
|---|---|
| CQA speedup if no scalar integer | 1.00 |
| CQA speedup if FP arith vectorized | 1.00 |
| CQA speedup if fully vectorized | 1.00 |
| CQA speedup if no inter-iteration dependency | NA |
| CQA speedup if next bottleneck killed | 1.33 |
| Bottlenecks | P6, P7, P10, P11, |
| Function | softmax(float const*, float*, float*, int) |
| Source | attention_v2.cpp:47-48 |
| Source loop unroll info | unrolled by 4 |
| Source loop unroll confidence level | max |
| Unroll/vectorization loop type | NA |
| Unroll factor | 4 |
| CQA cycles | 2.00 |
| CQA cycles if no scalar integer | 2.00 |
| CQA cycles if FP arith vectorized | 2.00 |
| CQA cycles if fully vectorized | 2.00 |
| Front-end cycles | 1.50 |
| P0 cycles | 0.50 |
| P1 cycles | 0.50 |
| P2 cycles | 0.75 |
| P3 cycles | 0.75 |
| P4 cycles | 0.75 |
| P5 cycles | 0.75 |
| P6 cycles | 2.00 |
| P7 cycles | 2.00 |
| P8 cycles | 0.00 |
| P9 cycles | 0.00 |
| P10 cycles | 2.00 |
| P11 cycles | 2.00 |
| P12 cycles | 0.00 |
| P13 cycles | 0.00 |
| P14 cycles | 0.00 |
| DIV/SQRT cycles | 0.00 |
| Inter-iter dependencies cycles | 2 |
| FE+BE cycles (UFS) | NA |
| Stall cycles (UFS) | NA |
| Nb insns | 12.00 |
| Nb uops | 12.00 |
| Nb loads | NA |
| Nb stores | 0.00 |
| Nb stack references | 0.00 |
| FLOP/cycle | 0.00 |
| Nb FLOP add-sub | 0.00 |
| Nb FLOP mul | 0.00 |
| Nb FLOP fma | 0.00 |
| Nb FLOP div | 0.00 |
| Nb FLOP rcp | 0.00 |
| Nb FLOP sqrt | 0.00 |
| Nb FLOP rsqrt | 0.00 |
| Bytes/cycle | 64.00 |
| Bytes prefetched | 0.00 |
| Bytes loaded | 128.00 |
| Bytes stored | 0.00 |
| Stride 0 | 0.00 |
| Stride 1 | 0.00 |
| Stride n | 0.00 |
| Stride unknown | 1.00 |
| Stride indirect | 0.00 |
| Vectorization ratio all | 100.00 |
| Vectorization ratio load | 100.00 |
| Vectorization ratio store | NA |
| Vectorization ratio mul | NA |
| Vectorization ratio add_sub | NA |
| Vectorization ratio fma | NA |
| Vectorization ratio div_sqrt | NA |
| Vectorization ratio other | 100.00 |
| Vector-efficiency ratio all | 100.00 |
| Vector-efficiency ratio load | 100.00 |
| Vector-efficiency ratio store | NA |
| Vector-efficiency ratio mul | NA |
| Vector-efficiency ratio add_sub | NA |
| Vector-efficiency ratio fma | NA |
| Vector-efficiency ratio div_sqrt | NA |
| Vector-efficiency ratio other | 100.00 |
| Path / |
| Function | softmax(float const*, float*, float*, int) |
| Source file and lines | attention_v2.cpp:47-48 |
| Module | attention-gcc-native |
| nb instructions | 12 |
| nb uops | 12 |
| loop length | 48 |
| used w registers | 3 |
| used x registers | 2 |
| used b registers | 0 |
| used h registers | 0 |
| used s registers | 0 |
| used d registers | 0 |
| used q registers | 0 |
| used v registers | 0 |
| used z registers | 6 |
| nb stack references | 0 |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| uops | 0.50 | 0.50 | 0.75 | 0.75 | 0.75 | 0.75 | 2.00 | 2.00 | 0.00 | 0.00 | 2.00 | 2.00 | 0.00 | 0.00 | 0.00 |
| cycles | 0.50 | 0.50 | 0.75 | 0.75 | 0.75 | 0.75 | 2.00 | 2.00 | 0.00 | 0.00 | 2.00 | 2.00 | 0.00 | 0.00 | 0.00 |
| Cycles executing div or sqrt instructions | NA |
| Longest recurrence chain latency (RecMII) | 2.00 |
| Front-end | 1.50 |
| Dispatch | 2.00 |
| Data deps. | 2.00 |
| Overall L1 | 2.00 |
| all | 100% |
| load | 100% |
| 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 | NA (no other vectorizable/vectorized instructions) |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| all | 100% |
| load | 100% |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| all | 100% |
| load | 100% |
| 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 | NA (no other vectorizable/vectorized instructions) |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| all | 100% |
| load | 100% |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| Instruction | Nb FU | P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | Latency | Recip. throughput | Vectorization |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LD1W {Z26.S}, P7/Z, [X0, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| LD1W {Z27.S}, P7/Z, [X0, #1, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| ADD W1, W1, W25 | 1 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.25 | N/A |
| FMAXNM Z29.S, P7/M, Z29.S, Z26.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| FMAXNM Z28.S, P7/M, Z28.S, Z27.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| LD1W {Z26.S}, P7/Z, [X0, #2, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| LD1W {Z27.S}, P7/Z, [X0, #3, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| FMAXNM Z31.S, P7/M, Z31.S, Z26.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| ADD X0, X0, X26 | 1 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.25 | N/A |
| FMAXNM Z30.S, P7/M, Z30.S, Z27.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| CMP W23, W1 | 1 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.33 | N/A |
| B.CS 411aa0 <_Z7softmaxPKfPfS1_i+0xc0> | 1 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.50 | N/A |
| Function | softmax(float const*, float*, float*, int) |
| Source file and lines | attention_v2.cpp:47-48 |
| Module | attention-gcc-native |
| nb instructions | 12 |
| nb uops | 12 |
| loop length | 48 |
| used w registers | 3 |
| used x registers | 2 |
| used b registers | 0 |
| used h registers | 0 |
| used s registers | 0 |
| used d registers | 0 |
| used q registers | 0 |
| used v registers | 0 |
| used z registers | 6 |
| nb stack references | 0 |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| uops | 0.50 | 0.50 | 0.75 | 0.75 | 0.75 | 0.75 | 2.00 | 2.00 | 0.00 | 0.00 | 2.00 | 2.00 | 0.00 | 0.00 | 0.00 |
| cycles | 0.50 | 0.50 | 0.75 | 0.75 | 0.75 | 0.75 | 2.00 | 2.00 | 0.00 | 0.00 | 2.00 | 2.00 | 0.00 | 0.00 | 0.00 |
| Cycles executing div or sqrt instructions | NA |
| Longest recurrence chain latency (RecMII) | 2.00 |
| Front-end | 1.50 |
| Dispatch | 2.00 |
| Data deps. | 2.00 |
| Overall L1 | 2.00 |
| all | 100% |
| load | 100% |
| 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 | NA (no other vectorizable/vectorized instructions) |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| all | 100% |
| load | 100% |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| all | 100% |
| load | 100% |
| 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 | NA (no other vectorizable/vectorized instructions) |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| all | 100% |
| load | 100% |
| 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) |
| div/sqrt | NA (no div/sqrt vectorizable/vectorized instructions) |
| other | 100% |
| Instruction | Nb FU | P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 | P12 | P13 | P14 | Latency | Recip. throughput | Vectorization |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LD1W {Z26.S}, P7/Z, [X0, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| LD1W {Z27.S}, P7/Z, [X0, #1, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| ADD W1, W1, W25 | 1 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.25 | N/A |
| FMAXNM Z29.S, P7/M, Z29.S, Z26.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| FMAXNM Z28.S, P7/M, Z28.S, Z27.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| LD1W {Z26.S}, P7/Z, [X0, #2, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| LD1W {Z27.S}, P7/Z, [X0, #3, MUL VL] | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 6 | 0.50 | vect (100.0%) |
| FMAXNM Z31.S, P7/M, Z31.S, Z26.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| ADD X0, X0, X26 | 1 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.25 | N/A |
| FMAXNM Z30.S, P7/M, Z30.S, Z27.S | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.50 | vect (100.0%) |
| CMP W23, W1 | 1 | 0 | 0 | 0.25 | 0.25 | 0.25 | 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.33 | N/A |
| B.CS 411aa0 <_Z7softmaxPKfPfS1_i+0xc0> | 1 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.50 | N/A |
