diff options
| -rw-r--r-- | slide.pdf | bin | 1130161 -> 1128697 bytes | |||
| -rw-r--r-- | slide.saty | 44 |
2 files changed, 19 insertions, 25 deletions
| Binary files differ @@ -251,9 +251,9 @@ document '< +frame{ベンチマーク}< +fig-center(vconcat [ gap 75pt; - big-textbox{実行時間: 33.327 -\> 29.274 s}; + big-textbox{実行時間: 33.327 s -\> 29.274 s}; gap 30pt; - big-textbox{メモリ使用量: 240 MiB (ほぼ10分の1)}; + big-textbox{メモリ使用量: 2.2 GiB -\> 240 MiB}; ]); > @@ -270,21 +270,6 @@ document '< } `); +p{どの命令が遅いのかわからない} - > - - +frame{ボトルネック探しの課題}< - +p{Wasm の命令を実行する処理がすべて1つの関数に集約されている} - +code-block-php(`function execInstr($instr) { - if ($instr instanceof Instrs\Numeric\F32Abs) { - ... - } elseif ($instr instanceof Instrs\Numeric\F32Add) { - ... - } elseif ($instr instanceof Instrs\Numeric\F32Ceil) { - ... - } -} -`); - +p{どの命令が遅いのかわからない} +p{命令ごとに関数を分ける} > @@ -417,9 +402,9 @@ document '< gap 30pt; mid-textbox{i32、i64、f32、f64}; gap 40pt; - mid-textbox{個別にクラスを用意}; + mid-textbox{PHP は int/float しか持たないので、区別できない}; gap 30pt; - mid-textbox{クラスのアロケーションコスト}; + mid-textbox{個別にクラスを用意}; ]); > @@ -599,8 +584,8 @@ final class Br extends ControlFlowResult > +frame{メモリ表現の最適化}< - +code-block-php(`function loadI32(int $n) { - $bytes = $this->sliceNBytes($n, 4); + +code-block-php(`function loadI32(int $p) { + $bytes = $this->sliceNBytes($p, 4); return unpack('l', $bytes)[1]; } `); @@ -608,8 +593,8 @@ final class Br extends ControlFlowResult > +frame{メモリ表現の最適化}< - +code-block-c(`int32_t loadI32(void* rawData, size_t n) { - return *(int32_t*)(rawData + n); + +code-block-c(`int32_t loadI32(void* rawData, size_t p) { + return *(int32_t*)(rawData + p); } `); +p{Cならこう書ける} @@ -629,12 +614,12 @@ final class Br extends ControlFlowResult "uint8_t[$this->memorySize]", ); -function loadI32(int $n) { +function loadI32(int $p) { $dataAsInt32 = $this->ffi->cast( "int32_t[$this->memorySize / 4]", $this->rawData, ); - return $dataAsInt32[$n / 4]; + return $dataAsInt32[$p / 4]; } `); > @@ -659,6 +644,15 @@ function loadI32(int $n) { %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +frame{デモ}< + +fig-center(vconcat [ + gap 75pt; + ex-big-textbox{// デモでも見せる}; + ]); + > + + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +frame{まとめ}< +fig-center(vconcat [ gap 60pt; |