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ggml-webgpu: Add the support of `MUL_MAT_ID` (#21147)
authorMasashi Yoshimura <redacted>
Mon, 6 Apr 2026 20:08:46 +0000 (05:08 +0900)
committerGitHub <redacted>
Mon, 6 Apr 2026 20:08:46 +0000 (13:08 -0700)
* Add mul_mat_id support to WebGPU

* Apply suggestion from @reeselevine

---------

Co-authored-by: Reese Levine <redacted>
docs/ops.md patch | blob | history
docs/ops/WebGPU.csv patch | blob | history
ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp patch | blob | history
ggml/src/ggml-webgpu/ggml-webgpu.cpp patch | blob | history
ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_decls.tmpl patch | blob | history
ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id.wgsl [new file with mode: 0644] patch | blob
ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id_gather.wgsl [new file with mode: 0644] patch | blob

diff --git a/docs/ops.md b/docs/ops.md
index b2b29e14ff8aa41271445b751cb9ddbe37a31f77..cecc1d528907f4c62b141714d21f2f054f59bc8a 100644 (file)
--- a/docs/ops.md
+++ b/docs/ops.md
@@ -68,7 +68,7 @@ Legend:
 |                             MEAN | ❌ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ |
 |                              MUL | ❌ | ✅ | ✅ | ✅ | 🟡 | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ |
 |                          MUL_MAT | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 |
-|                       MUL_MAT_ID | ❌ | 🟡 | ✅ | ✅ | 🟡 | 🟡 | 🟡 | ✅ | ❌ | 🟡 | ❌ |
+|                       MUL_MAT_ID | ❌ | 🟡 | ✅ | ✅ | 🟡 | 🟡 | 🟡 | ✅ | 🟡 | 🟡 | ❌ |
 |                              NEG | ❌ | ✅ | ✅ | 🟡 | ✅ | ❌ | ✅ | 🟡 | ✅ | ❌ | ❌ |
 |                             NORM | ❌ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | 🟡 | ❌ | ❌ | ❌ |
 |                   OPT_STEP_ADAMW | ❌ | ❌ | ✅ | ✅ | ✅ | ❌ | ❌ | ✅ | ❌ | ❌ | ❌ |
diff --git a/docs/ops/WebGPU.csv b/docs/ops/WebGPU.csv
index 3b8a27ce8902a1970dcea4a53e5c49a2c11f4a3a..f11a3fa37260ec2bfa23024a52d0e0332a9d30c6 100644 (file)
--- a/docs/ops/WebGPU.csv
+++ b/docs/ops/WebGPU.csv
@@ -7265,624 +7265,533 @@
 "WebGPU: WebGPU","MUL_MAT","type_a=bf16,type_b=f32,m=129,n=1,k=1057,bs=[8,3],nr=[4,1],per=[0,1,2,3],k_v=2113,o=1","support","0","no","WebGPU"
 "WebGPU: WebGPU","MUL_MAT","type_a=f32,type_b=f32,m=1057,n=1,k=129,bs=[8,3],nr=[4,1],per=[0,2,1,3],k_v=0,o=1","support","1","yes","WebGPU"
 "WebGPU: WebGPU","MUL_MAT","type_a=f32,type_b=f32,m=129,n=1,k=1057,bs=[8,3],nr=[4,1],per=[0,1,2,3],k_v=2113,o=1","support","1","yes","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=16,n_used=16,b=0,m=32,n=1024,k=16","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=2,n_used=2,b=0,m=32,n=8192,k=64","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=16,n_used=16,b=0,m=50,n=200,k=64","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=16,n_used=16,b=1,m=32,n=1024,k=16","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=2,n_used=2,b=1,m=32,n=8192,k=64","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=16,n_used=16,b=1,m=50,n=200,k=64","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=1,n_used=1,b=0,m=8,n=16,k=1","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=mxfp4,type_b=f32,n_mats=32,n_used=2,b=0,m=2880,n=32,k=2880","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=2,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=4,n_used=4,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=1,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f32,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=1,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
-"WebGPU: WebGPU","MUL_MAT_ID","type_a=f16,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
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+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=2,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=1,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=4,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=5,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=17,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=32,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=0,m=512,n=129,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=1,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=4,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=5,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=17,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=32,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=nvfp4,type_b=f32,n_mats=8,n_used=4,b=1,m=512,n=129,k=256","support","0","no","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q4_1,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q4_1,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q5_0,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q5_0,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q5_1,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q5_1,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q8_0,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q8_0,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q2_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q2_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q3_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q3_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q5_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q5_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q6_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=1,k=256","support","1","yes","WebGPU"
+"WebGPU: WebGPU","MUL_MAT_ID","type_a=q6_K,type_b=f32,n_mats=4,n_used=2,b=0,m=512,n=32,k=256","support","1","yes","WebGPU"
 "WebGPU: WebGPU","OUT_PROD","type_a=f32,type_b=f32,m=256,n=1,k=1,bs=[1,1],nr=[1,1],trans_b=0","support","0","no","WebGPU"
 "WebGPU: WebGPU","OUT_PROD","type_a=f32,type_b=f32,m=256,n=1,k=1,bs=[1,1],nr=[1,2],trans_b=0","support","0","no","WebGPU"
 "WebGPU: WebGPU","OUT_PROD","type_a=f32,type_b=f32,m=256,n=1,k=1,bs=[1,1],nr=[2,1],trans_b=0","support","0","no","WebGPU"
diff --git a/ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp b/ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp
index 669d2cd53a8354322745252f67c39b5d77c2e098..c10157766d943ae27d0296dfbd42ea41a5106524 100644 (file)
--- a/ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp
+++ b/ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp
@@ -658,6 +658,26 @@ struct ggml_webgpu_mul_mat_shader_decisions {
     uint32_t mul_mat_wg_size;
 };
 
+/** MUL_MAT_ID **/
+
+struct ggml_webgpu_mul_mat_id_pipeline_key {
+    ggml_type src0_type;
+    ggml_type src1_type;
+
+    bool operator==(const ggml_webgpu_mul_mat_id_pipeline_key & other) const {
+        return src0_type == other.src0_type && src1_type == other.src1_type;
+    }
+};
+
+struct ggml_webgpu_mul_mat_id_pipeline_key_hash {
+    size_t operator()(const ggml_webgpu_mul_mat_id_pipeline_key & key) const {
+        size_t seed = 0;
+        ggml_webgpu_hash_combine(seed, key.src0_type);
+        ggml_webgpu_hash_combine(seed, key.src1_type);
+        return seed;
+    }
+};
+
 /** Cpy **/
 
 struct ggml_webgpu_cpy_pipeline_key {
@@ -797,7 +817,10 @@ class ggml_webgpu_shader_lib {
     std::unordered_map<ggml_webgpu_mul_mat_vec_pipeline_key, webgpu_pipeline, ggml_webgpu_mul_mat_vec_pipeline_key_hash>
         mul_mat_vec_pipelines;     // fast mat-vec (n==1)
     std::unordered_map<ggml_webgpu_mul_mat_pipeline_key, webgpu_pipeline, ggml_webgpu_mul_mat_pipeline_key_hash>
-        mul_mat_fast_pipelines;    // fast mat-mat (reg-tile or subgroup)
+                                             mul_mat_fast_pipelines;       // fast mat-mat (reg-tile or subgroup)
+    std::unordered_map<int, webgpu_pipeline> mul_mat_id_gather_pipelines;  // key is fixed
+    std::unordered_map<ggml_webgpu_mul_mat_id_pipeline_key, webgpu_pipeline, ggml_webgpu_mul_mat_id_pipeline_key_hash>
+        mul_mat_id_pipelines;                                              // src0_type/src1_type
 
     std::unordered_map<ggml_webgpu_set_rows_pipeline_key, webgpu_pipeline, ggml_webgpu_set_rows_pipeline_key_hash>
         set_rows_pipelines;
@@ -1598,6 +1621,115 @@ class ggml_webgpu_shader_lib {
         return mul_mat_legacy_pipelines[key];
     }
 
+    webgpu_pipeline get_mul_mat_id_gather_pipeline(const ggml_webgpu_shader_lib_context & context) {
+        auto it = mul_mat_id_gather_pipelines.find(1);
+        if (it != mul_mat_id_gather_pipelines.end()) {
+            return it->second;
+        }
+        std::vector<std::string> defines;
+        defines.push_back(std::string("WG_SIZE=") + std::to_string(context.max_wg_size));
+
+        auto processed     = preprocessor.preprocess(wgsl_mul_mat_id_gather, defines);
+        auto decisions     = std::make_shared<ggml_webgpu_generic_shader_decisions>();
+        decisions->wg_size = context.max_wg_size;
+
+        webgpu_pipeline pipeline       = ggml_webgpu_create_pipeline(device, processed, "mul_mat_id_gather");
+        pipeline.context               = decisions;
+        mul_mat_id_gather_pipelines[1] = pipeline;
+        return pipeline;
+    }
+
+    webgpu_pipeline get_mul_mat_id_pipeline(const ggml_webgpu_shader_lib_context & context) {
+        ggml_webgpu_mul_mat_id_pipeline_key key = {
+            .src0_type = context.src0->type,
+            .src1_type = context.src1->type,
+        };
+
+        auto it = mul_mat_id_pipelines.find(key);
+        if (it != mul_mat_id_pipelines.end()) {
+            return it->second;
+        }
+
+        std::vector<std::string> defines;
+        std::string              variant = "mul_mat_id";
+        defines.push_back("MUL_MAT_ID");
+
+        // src1 type
+        switch (context.src1->type) {
+            case GGML_TYPE_F32:
+                defines.push_back("SRC1_INNER_TYPE=f32");
+                break;
+            case GGML_TYPE_F16:
+                defines.push_back("SRC1_INNER_TYPE=f16");
+                break;
+            default:
+                GGML_ABORT("Unsupported src1 type for mul_mat fast shader");
+        }
+
+        // src0 type
+        const struct ggml_type_traits * src0_traits = ggml_get_type_traits(context.src0->type);
+        const char *                    src0_name   = src0_traits->type_name;
+
+        switch (context.src0->type) {
+            case GGML_TYPE_F32:
+                defines.push_back("SRC0_INNER_TYPE=f32");
+                defines.push_back("FLOAT");
+                defines.push_back("INIT_SRC0_SHMEM_FLOAT");
+                defines.push_back("INIT_SRC1_SHMEM_FLOAT");
+                variant += "_f32";
+                break;
+            case GGML_TYPE_F16:
+                defines.push_back("SRC0_INNER_TYPE=f16");
+                defines.push_back("FLOAT");
+                defines.push_back("INIT_SRC0_SHMEM_FLOAT");
+                defines.push_back("INIT_SRC1_SHMEM_FLOAT");
+                variant += "_f16";
+                break;
+            default:
+                {
+                    std::string type_upper = src0_name;
+                    std::transform(type_upper.begin(), type_upper.end(), type_upper.begin(), ::toupper);
+
+                    defines.push_back("BYTE_HELPERS");
+                    defines.push_back("INIT_SRC0_SHMEM_" + type_upper);
+                    defines.push_back("INIT_SRC1_SHMEM_FLOAT");
+                    defines.push_back("U32_DEQUANT_HELPERS");
+                    defines.push_back("SRC0_INNER_TYPE=u32");
+
+                    variant += std::string("_") + src0_name;
+                    break;
+                }
+        }
+
+        defines.push_back("SCALAR");
+
+        // Tiles
+        defines.push_back("TILE_M=" + std::to_string(WEBGPU_MUL_MAT_TILE_M) + "u");
+        defines.push_back("TILE_N=" + std::to_string(WEBGPU_MUL_MAT_TILE_N) + "u");
+        defines.push_back("TILE_K=" + std::to_string(WEBGPU_MUL_MAT_TILE_K) + "u");
+
+        defines.push_back("WORKGROUP_SIZE_M=" + std::to_string(WEBGPU_MUL_MAT_WG_SIZE_M) + "u");
+        defines.push_back("WORKGROUP_SIZE_N=" + std::to_string(WEBGPU_MUL_MAT_WG_SIZE_N) + "u");
+
+        // variant suffix for src1 type
+        variant += std::string("_") + (context.src1->type == GGML_TYPE_F32 ? "f32" : "f16");
+
+        auto processed = preprocessor.preprocess(wgsl_mul_mat_id, defines);
+
+        auto decisions       = std::make_shared<ggml_webgpu_mul_mat_shader_decisions>();
+        decisions->tile_k    = WEBGPU_MUL_MAT_TILE_K;
+        decisions->tile_m    = WEBGPU_MUL_MAT_TILE_M;
+        decisions->tile_n    = WEBGPU_MUL_MAT_TILE_N;
+        decisions->wg_size_m = WEBGPU_MUL_MAT_WG_SIZE_M;
+        decisions->wg_size_n = WEBGPU_MUL_MAT_WG_SIZE_N;
+        decisions->wg_size   = WEBGPU_MUL_MAT_WG_SIZE_M * WEBGPU_MUL_MAT_WG_SIZE_N;
+
+        webgpu_pipeline pipeline  = ggml_webgpu_create_pipeline(device, processed, variant);
+        pipeline.context          = decisions;
+        mul_mat_id_pipelines[key] = pipeline;
+        return mul_mat_id_pipelines[key];
+    }
+
     webgpu_pipeline get_unary_pipeline(const ggml_webgpu_shader_lib_context & context) {
         const bool                     is_unary = context.dst->op == GGML_OP_UNARY;
         const int                      op       = is_unary ? (int) ggml_get_unary_op(context.dst) : context.dst->op;
diff --git a/ggml/src/ggml-webgpu/ggml-webgpu.cpp b/ggml/src/ggml-webgpu/ggml-webgpu.cpp
index 5c567dc0df07bab5a77642a4cbf0067842b7b557..5b118393640e37784eb0008b7c324a15c4252941 100644 (file)
--- a/ggml/src/ggml-webgpu/ggml-webgpu.cpp
+++ b/ggml/src/ggml-webgpu/ggml-webgpu.cpp
@@ -1376,6 +1376,163 @@ static webgpu_encoded_op ggml_webgpu_mul_mat(webgpu_context &       ctx,
     return ggml_backend_webgpu_build(ctx->global_ctx, ctx->param_arena, encoder, pipeline, params, entries, wg_x, wg_y);
 }
 
+static webgpu_encoded_op ggml_webgpu_mul_mat_id(webgpu_context &       ctx,
+                                                wgpu::CommandEncoder & encoder,
+                                                ggml_tensor *          src0,
+                                                ggml_tensor *          src1,
+                                                ggml_tensor *          src2,
+                                                ggml_tensor *          dst) {
+    ggml_webgpu_shader_lib_context shader_lib_ctx = {
+        .src0        = src0,
+        .src1        = src1,
+        .src2        = src2,
+        .dst         = dst,
+        .max_wg_size = ctx->global_ctx->capabilities.limits.maxComputeInvocationsPerWorkgroup,
+    };
+
+    // Get or create pipeline
+    webgpu_pipeline gather_pipeline, main_pipeline;
+
+    std::vector<webgpu_pipeline>                   pipelines;
+    std::vector<std::vector<uint32_t>>             params_list;
+    std::vector<std::vector<wgpu::BindGroupEntry>> entries_list;
+    std::vector<std::pair<uint32_t, uint32_t>>     workgroups_list;
+
+    gather_pipeline = ctx->shader_lib->get_mul_mat_id_gather_pipeline(shader_lib_ctx);
+    main_pipeline   = ctx->shader_lib->get_mul_mat_id_pipeline(shader_lib_ctx);
+
+    const uint32_t param_n_expert      = (uint32_t) src0->ne[2];
+    const uint32_t param_n_expert_used = (uint32_t) dst->ne[1];
+    const uint32_t param_n_tokens      = (uint32_t) dst->ne[2];
+
+    // params for mul_mat_id_gather.wgsl
+    std::vector<uint32_t> gather_params = {
+        (uint32_t) (ggml_webgpu_tensor_misalignment(ctx, src2) / ggml_type_size(src2->type)),
+        param_n_expert,
+        param_n_expert_used,
+        param_n_tokens,
+        (uint32_t) (src2->nb[1] / ggml_type_size(src2->type)),
+    };
+
+    const size_t dst_offset          = ggml_webgpu_tensor_offset(dst);
+    const size_t gathered_buf_nbytes = src0->ne[2] * src1->ne[2] * sizeof(uint32_t);
+
+    const size_t gathered_expert_used_align_offset = ROUNDUP_POW2(
+        dst_offset + ggml_nbytes(dst), ctx->global_ctx->capabilities.limits.minStorageBufferOffsetAlignment);
+    const size_t gathered_tokens_align_offset =
+        ROUNDUP_POW2(gathered_expert_used_align_offset + gathered_buf_nbytes,
+                     ctx->global_ctx->capabilities.limits.minStorageBufferOffsetAlignment);
+    const size_t gathered_count_ids_align_offset =
+        ROUNDUP_POW2(gathered_tokens_align_offset + gathered_buf_nbytes,
+                     ctx->global_ctx->capabilities.limits.minStorageBufferOffsetAlignment);
+
+    const size_t gathered_binding_size = ROUNDUP_POW2(gathered_buf_nbytes, WEBGPU_STORAGE_BUF_BINDING_MULT);
+    const size_t gathered_count_ids_binding_size =
+        ROUNDUP_POW2(src0->ne[2] * sizeof(uint32_t), WEBGPU_STORAGE_BUF_BINDING_MULT);
+
+    // bind group entries for mul_mat_id_gather.wgsl
+    std::vector<wgpu::BindGroupEntry> gather_entries = {
+        { .binding = 0,
+         .buffer  = ggml_webgpu_tensor_buf(src2),
+         .offset  = ggml_webgpu_tensor_align_offset(ctx, src2),
+         .size    = ggml_webgpu_tensor_binding_size(ctx, src2) },
+        { .binding = 1,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = gathered_expert_used_align_offset,
+         .size    = gathered_binding_size },
+        { .binding = 2,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = gathered_tokens_align_offset,
+         .size    = gathered_binding_size },
+        { .binding = 3,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = gathered_count_ids_align_offset,
+         .size    = gathered_count_ids_binding_size },
+    };
+
+    const uint32_t max_wg_per_dim = ctx->global_ctx->capabilities.limits.maxComputeWorkgroupsPerDimension;
+
+    const uint32_t gather_total_wg = param_n_expert;
+    const uint32_t gather_wg_x     = std::min(gather_total_wg, max_wg_per_dim);
+    const uint32_t gather_wg_y     = CEIL_DIV(gather_total_wg, gather_wg_x);
+
+    pipelines.push_back(gather_pipeline);
+    params_list.push_back(std::move(gather_params));
+    entries_list.push_back(std::move(gather_entries));
+    workgroups_list.push_back({ gather_wg_x, gather_wg_y });
+
+    // params for mul_mat_id.wgsl
+    std::vector<uint32_t> main_params = {
+        (uint32_t) (ggml_webgpu_tensor_misalignment(ctx, src0) / ggml_type_size(src0->type)),
+        (uint32_t) (ggml_webgpu_tensor_misalignment(ctx, src1) / ggml_type_size(src1->type)),
+        (uint32_t) (ggml_webgpu_tensor_misalignment(ctx, dst) / ggml_type_size(dst->type)),
+        (uint32_t) src0->ne[0],
+        (uint32_t) src0->ne[1],
+        param_n_expert,
+        param_n_expert_used,
+        param_n_tokens,
+        (uint32_t) src1->ne[1],
+        (uint32_t) (src0->nb[1] / ggml_type_size(src0->type)),
+        (uint32_t) (src1->nb[1] / ggml_type_size(src1->type)),
+        (uint32_t) (src0->nb[2] / ggml_type_size(src0->type)),
+        (uint32_t) (src1->nb[2] / ggml_type_size(src1->type)),
+    };
+
+    // bind group entries for mul_mat_id.wgsl
+    std::vector<wgpu::BindGroupEntry> main_entries = {
+        { .binding = 0,
+         .buffer  = ggml_webgpu_tensor_buf(src0),
+         .offset  = ggml_webgpu_tensor_align_offset(ctx, src0),
+         .size    = ggml_webgpu_tensor_binding_size(ctx, src0) },
+        { .binding = 1,
+         .buffer  = ggml_webgpu_tensor_buf(src1),
+         .offset  = ggml_webgpu_tensor_align_offset(ctx, src1),
+         .size    = ggml_webgpu_tensor_binding_size(ctx, src1) },
+        { .binding = 2,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = ggml_webgpu_tensor_align_offset(ctx, dst),
+         .size    = ggml_webgpu_tensor_binding_size(ctx, dst) },
+        { .binding = 3,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = gathered_expert_used_align_offset,
+         .size    = gathered_binding_size },
+        { .binding = 4,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = gathered_tokens_align_offset,
+         .size    = gathered_binding_size },
+        { .binding = 5,
+         .buffer  = ggml_webgpu_tensor_buf(dst),
+         .offset  = gathered_count_ids_align_offset,
+         .size    = gathered_count_ids_binding_size },
+    };
+
+    // Calculate workgroup dimensions
+    uint32_t wg_x = 1;
+    uint32_t wg_y = 1;
+
+    auto * main_decisions = static_cast<ggml_webgpu_mul_mat_shader_decisions *>(main_pipeline.context.get());
+
+    uint32_t wg_m;
+
+    uint32_t tile_m_s           = main_decisions->tile_m * main_decisions->wg_size_m;
+    uint32_t tile_n_s           = main_decisions->tile_n * main_decisions->wg_size_n;
+    wg_m                        = CEIL_DIV(dst->ne[0], tile_m_s);
+    uint32_t total_gathered     = dst->ne[1] * dst->ne[2];
+    uint32_t max_active_experts = std::min((uint32_t) src0->ne[2], total_gathered);
+    uint32_t max_wg_n           = CEIL_DIV(total_gathered, tile_n_s) + max_active_experts;
+    uint32_t total_wg           = wg_m * max_wg_n;
+
+    compute_2d_workgroups(total_wg, max_wg_per_dim, wg_x, wg_y);
+
+    pipelines.push_back(main_pipeline);
+    params_list.push_back(std::move(main_params));
+    entries_list.push_back(std::move(main_entries));
+    workgroups_list.push_back({ wg_x, wg_y });
+
+    return ggml_backend_webgpu_build_multi(ctx->global_ctx, ctx->param_arena, encoder, pipelines, params_list,
+                                           entries_list, workgroups_list);
+}
+
 #ifndef __EMSCRIPTEN__
 static webgpu_encoded_op ggml_webgpu_flash_attn(webgpu_context &       ctx,
                                                 wgpu::CommandEncoder & encoder,
@@ -2638,6 +2795,8 @@ static std::optional<webgpu_encoded_op> ggml_webgpu_encode_node(webgpu_context
             return ggml_webgpu_get_rows(ctx, encoder, src0, src1, node);
         case GGML_OP_MUL_MAT:
             return ggml_webgpu_mul_mat(ctx, encoder, src0, src1, node);
+        case GGML_OP_MUL_MAT_ID:
+            return ggml_webgpu_mul_mat_id(ctx, encoder, src0, src1, src2, node);
         case GGML_OP_FLASH_ATTN_EXT:
 #ifndef __EMSCRIPTEN__
             return ggml_webgpu_flash_attn(ctx, encoder, src0, src1, src2, node->src[3], node->src[4], node);
@@ -3082,6 +3241,20 @@ static size_t ggml_backend_webgpu_buffer_type_get_alloc_size(ggml_backend_buffer
                 }
             }
             break;
+        case GGML_OP_MUL_MAT_ID:
+            {
+                const ggml_tensor * src0 = tensor->src[0];
+                const ggml_tensor * src1 = tensor->src[1];
+                if (src0 && src1) {
+                    const size_t gathered_size = sizeof(uint32_t) * tensor->src[0]->ne[2] * tensor->src[1]->ne[2];
+                    const size_t gathered_count_ids_size = sizeof(uint32_t) * tensor->src[0]->ne[2];
+                    res                                  = ROUNDUP_POW2(
+                        res + gathered_size * 2 + gathered_count_ids_size +
+                            ctx->webgpu_global_ctx->capabilities.limits.minStorageBufferOffsetAlignment * 3,
+                        WEBGPU_STORAGE_BUF_BINDING_MULT);
+                }
+            }
+            break;
         default:
             break;
     }
@@ -3503,6 +3676,35 @@ static bool ggml_backend_webgpu_device_supports_op(ggml_backend_dev_t dev, const
                 }
                 break;
             }
+        case GGML_OP_MUL_MAT_ID:
+            switch (src1->type) {
+                case GGML_TYPE_F16:
+                    supports_op |= (src0->type == GGML_TYPE_F16);
+                    break;
+                case GGML_TYPE_F32:
+                    switch (src0->type) {
+                        case GGML_TYPE_F32:
+                        case GGML_TYPE_F16:
+                        case GGML_TYPE_Q4_0:
+                        case GGML_TYPE_Q4_1:
+                        case GGML_TYPE_Q5_0:
+                        case GGML_TYPE_Q5_1:
+                        case GGML_TYPE_Q8_0:
+                        case GGML_TYPE_Q2_K:
+                        case GGML_TYPE_Q3_K:
+                        case GGML_TYPE_Q4_K:
+                        case GGML_TYPE_Q5_K:
+                        case GGML_TYPE_Q6_K:
+                            supports_op = true;
+                            break;
+                        default:
+                            break;
+                    }
+                    break;
+                default:
+                    break;
+            }
+            break;
         case GGML_OP_FLASH_ATTN_EXT:
             {
 #ifndef __EMSCRIPTEN__
diff --git a/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_decls.tmpl b/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_decls.tmpl
index eb228537bad20bdd68f517651026e8faaf7e98a8..ea91c13468fb490164169cf4d1bd2f1eabca7895 100644 (file)
--- a/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_decls.tmpl
+++ b/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_decls.tmpl
@@ -42,6 +42,7 @@ fn init_shmem_src0(thread_id: u32, batch_offset: u32, offset_m: u32, k_outer: u3
 }
 #endif // INIT_SRC0_SHMEM_FLOAT
 
+#ifndef MUL_MAT_ID
 #ifdef INIT_SRC1_SHMEM_FLOAT
 fn init_shmem_src1(thread_id: u32, batch_offset: u32, offset_n: u32, k_outer: u32) {
     for (var elem_idx = thread_id * VEC_SIZE; elem_idx < TILE_SRC1_SHMEM; elem_idx += TOTAL_WORKGROUP_SIZE * VEC_SIZE) {
@@ -58,6 +59,7 @@ fn init_shmem_src1(thread_id: u32, batch_offset: u32, offset_n: u32, k_outer: u3
     }
 }
 #endif // INIT_SRC1_SHMEM_FLOAT
+#endif
 
 #ifdef INIT_SRC0_SHMEM_Q4_0
 const BLOCK_SIZE = 32u;
diff --git a/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id.wgsl b/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id.wgsl
new file mode 100644 (file)
index 0000000..5f763a6
--- /dev/null
+++ b/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id.wgsl
@@ -0,0 +1,193 @@
+enable f16;
+
+#include "common_decls.tmpl"
+#include "mul_mat_decls.tmpl"
+
+#ifdef VEC
+fn store_val(acc: array<array<f16, TILE_M>, TILE_N>, tn: u32, tm: u32) -> vec4<f32> {
+    return vec4<f32>(f32(acc[tn][tm]), f32(acc[tn][tm + 1]), f32(acc[tn][tm + 2]), f32(acc[tn][tm + 3]));
+}
+#endif
+
+#ifdef SCALAR
+fn store_val(acc: array<array<f16, TILE_M>, TILE_N>, tn: u32, tm: u32) -> f32 {
+    return f32(acc[tn][tm]);
+}
+#endif
+
+struct MulMatIdParams {
+    offset_src0: u32,
+    offset_src1: u32,
+    offset_dst: u32,
+
+    k: u32,
+    m: u32,
+    n_expert: u32,
+    n_expert_used: u32,
+    n_tokens: u32,
+    b_ne1: u32,
+
+    stride_01: u32,
+    stride_11: u32,
+    stride_02: u32,
+    stride_12: u32,
+};
+
+@group(0) @binding(0) var<storage, read_write> src0: array<SRC0_TYPE>; // [cols, rows, n_expert]
+@group(0) @binding(1) var<storage, read_write> src1: array<SRC1_TYPE>; // [cols, b_ne1, n_tokens]
+@group(0) @binding(2) var<storage, read_write> dst: array<DST_TYPE>;   // [rows, n_expert_used, n_tokens]
+@group(0) @binding(3) var<storage, read_write> global_gathered_expert_used: array<u32>; // [n_expert][n_tokens]
+@group(0) @binding(4) var<storage, read_write> global_gathered_tokens: array<u32>; // [n_expert][n_tokens]
+@group(0) @binding(5) var<storage, read_write> gathered_count_ids: array<u32>; // [n_expert]
+
+@group(0) @binding(6) var<uniform> params: MulMatIdParams;
+
+fn get_local_n(thread_id: u32) -> u32 {
+    return thread_id / WORKGROUP_SIZE_M;
+}
+fn get_local_m(thread_id: u32) -> u32 {
+    return thread_id % WORKGROUP_SIZE_M;
+}
+
+const TOTAL_WORKGROUP_SIZE = WORKGROUP_SIZE_M * WORKGROUP_SIZE_N;
+const TILE_SRC0_SHMEM = TILE_K * WORKGROUP_SIZE_M * TILE_M;
+const TILE_SRC1_SHMEM = TILE_K * WORKGROUP_SIZE_N * TILE_N;
+
+var<workgroup> shmem: array<f16, TILE_SRC0_SHMEM + TILE_SRC1_SHMEM>;
+var<workgroup> gathered_expert_used: array<u32, TILE_N * WORKGROUP_SIZE_N>;
+var<workgroup> gathered_tokens: array<u32, TILE_N * WORKGROUP_SIZE_N>;
+
+#ifdef INIT_SRC1_SHMEM_FLOAT
+fn init_shmem_id_src1(thread_id: u32, offset_src1: u32, rest_token_n: u32, k_outer: u32) {
+    for (var elem_idx = thread_id * VEC_SIZE; elem_idx < TILE_SRC1_SHMEM; elem_idx += TOTAL_WORKGROUP_SIZE * VEC_SIZE) {
+        let tile_n = elem_idx / TILE_K;
+        let tile_k = elem_idx % TILE_K;
+        if (tile_n < rest_token_n) {
+            let global_src10 = k_outer + tile_k;
+            let expert_used_idx = gathered_expert_used[tile_n] % params.b_ne1;
+            let token_idx = gathered_tokens[tile_n];
+            let src1_idx = offset_src1 + token_idx * params.stride_12 + expert_used_idx * params.stride_11 + global_src10;
+            let src1_val = select(
+                SRC1_TYPE(0.0),
+                src1[src1_idx/VEC_SIZE],
+                global_src10 < params.k);
+            store_shmem(SHMEM_TYPE(src1_val), TILE_SRC0_SHMEM + elem_idx);
+        } else {
+            store_shmem(SHMEM_TYPE(0.0), TILE_SRC0_SHMEM + elem_idx);
+        }
+    }
+}
+#endif // INIT_SRC1_SHMEM_FLOAT
+
+@compute @workgroup_size(TOTAL_WORKGROUP_SIZE)
+fn main(@builtin(workgroup_id) wg_id: vec3<u32>,
+        @builtin(local_invocation_id) local_id: vec3<u32>,
+        @builtin(num_workgroups) num_wg: vec3<u32>) {
+
+    let thread_id = local_id.x;
+    let local_m = get_local_m(thread_id);
+    let local_n = get_local_n(thread_id);
+
+    var expert_idx:u32 = 0xFFFFFFFFu;
+    var wg_in_batch:u32 = 0;
+    var wg_sum:u32 = 0;
+    let wg_m_count = (params.m + WORKGROUP_SIZE_M * TILE_M - 1u) / (WORKGROUP_SIZE_M * TILE_M);
+    let wg_linear = wg_id.y * num_wg.x + wg_id.x;
+
+    for (var i = 0u;i < params.n_expert;i += 1) {
+        let wg_n_count = (gathered_count_ids[i] + WORKGROUP_SIZE_N * TILE_N - 1u) / (WORKGROUP_SIZE_N * TILE_N);
+        let wg_per_matrix = wg_m_count * wg_n_count;
+        if (wg_sum <= wg_linear && wg_linear < wg_sum + wg_per_matrix) {
+            expert_idx = i;
+            wg_in_batch = wg_linear - wg_sum;
+            break;
+        }
+        wg_sum += wg_per_matrix;
+    }
+
+    let is_valid = expert_idx != 0xFFFFFFFFu;
+
+    var wg_m: u32 = 0;
+    var wg_n: u32 = 0;
+    var offset_wg_m: u32 = 0;
+    var offset_wg_n: u32 = 0;
+    var rest_token_n: u32 = 0;
+    var src0_batch_offset: u32 = 0;
+
+    wg_m = wg_in_batch % wg_m_count;
+    wg_n = wg_in_batch / wg_m_count;
+
+    offset_wg_m = wg_m * WORKGROUP_SIZE_M * TILE_M;
+    offset_wg_n = wg_n * WORKGROUP_SIZE_N * TILE_N;
+
+    if (is_valid) {
+        rest_token_n = gathered_count_ids[expert_idx] - offset_wg_n;
+        let global_gathered_base = expert_idx * params.n_tokens + offset_wg_n;
+        for (var i = thread_id; i < TILE_N * WORKGROUP_SIZE_N && offset_wg_n + i < gathered_count_ids[expert_idx]; i += TOTAL_WORKGROUP_SIZE) {
+            gathered_expert_used[i] = global_gathered_expert_used[global_gathered_base + i];
+            gathered_tokens[i] = global_gathered_tokens[global_gathered_base + i];
+        }
+        src0_batch_offset = params.offset_src0 + expert_idx * params.stride_02;
+    }
+
+    workgroupBarrier();
+
+    let output_row_base = offset_wg_m + local_m * TILE_M;
+    let output_col_base = offset_wg_n + local_n * TILE_N;
+
+    let dst2_stride = params.m * params.n_expert_used;
+    let dst1_stride = params.m;
+
+    var acc: array<array<f16, TILE_M>, TILE_N>;
+
+    for (var k_outer = 0u; k_outer < params.k; k_outer += TILE_K) {
+
+        if (is_valid) {
+            init_shmem_src0(thread_id, src0_batch_offset, offset_wg_m, k_outer);
+            init_shmem_id_src1(thread_id, params.offset_src1, rest_token_n, k_outer);
+        }
+
+        workgroupBarrier();
+
+        if (is_valid) {
+            let k_end = min(TILE_K, params.k - k_outer);
+
+            for (var k_inner = 0u; k_inner < k_end; k_inner++) {
+                var src0_tile: array<f16, TILE_M>;
+                for (var tm = 0u; tm < TILE_M; tm++) {
+                    let src0_m = local_m * TILE_M + tm;
+                    let src0_idx = k_inner + src0_m * TILE_K;
+                    src0_tile[tm] = shmem[src0_idx];
+                }
+                for (var tn = 0u; tn < TILE_N; tn++) {
+                    let src1_n = local_n * TILE_N + tn;
+                    let src1_idx = src1_n * TILE_K + k_inner;
+                    let src1_val = shmem[TILE_SRC0_SHMEM + src1_idx];
+                    for (var tm = 0u; tm < TILE_M; tm++) {
+                        acc[tn][tm] += src0_tile[tm] * src1_val;
+                    }
+                }
+            }
+        }
+
+        workgroupBarrier();
+    }
+
+    if (is_valid) {
+        for (var tn = 0u; tn < TILE_N; tn++) {
+            let n_idx = output_col_base + tn;
+            if (n_idx < gathered_count_ids[expert_idx]) {
+                let dst1_idx = gathered_expert_used[n_idx - offset_wg_n];
+                let dst2_idx = gathered_tokens[n_idx - offset_wg_n];
+                let dst12_offset = params.offset_dst + dst2_idx * dst2_stride + dst1_idx * dst1_stride;
+                for (var tm = 0u; tm < TILE_M; tm += VEC_SIZE) {
+                    let global_row = output_row_base + tm;
+                    if (global_row < params.m) {
+                        let dst_idx = dst12_offset + global_row;
+                        dst[dst_idx/VEC_SIZE] = store_val(acc, tn, tm);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id_gather.wgsl b/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id_gather.wgsl
new file mode 100644 (file)
index 0000000..d79d5f3
--- /dev/null
+++ b/ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_id_gather.wgsl
@@ -0,0 +1,55 @@
+enable f16;
+
+struct MulMatIdGatherParams {
+    offset_ids: u32,
+
+    n_expert: u32,
+    n_expert_used: u32,
+    n_tokens: u32,
+
+    stride_ids_1: u32,
+};
+
+@group(0) @binding(0) var<storage, read_write> ids: array<i32>;        // [n_expert_used, n_tokens]
+@group(0) @binding(1) var<storage, read_write> global_gathered_expert_used: array<u32>; // [n_expert][n_tokens]
+@group(0) @binding(2) var<storage, read_write> global_gathered_tokens: array<u32>; // [n_expert][n_tokens]
+@group(0) @binding(3) var<storage, read_write> gathered_count_ids: array<u32>; // [n_expert]
+
+@group(0) @binding(4) var<uniform> params: MulMatIdGatherParams;
+
+var<workgroup> count:atomic<u32>;
+
+@compute @workgroup_size(WG_SIZE)
+fn main(@builtin(workgroup_id) wg_id: vec3<u32>,
+        @builtin(local_invocation_id) local_id: vec3<u32>,
+        @builtin(num_workgroups) num_wg: vec3<u32>) {
+
+    let thread_id = local_id.x;
+    let own_expert = wg_id.y * num_wg.x + wg_id.x; // the expert assigned to this workgroup
+
+    if (own_expert < params.n_expert) {
+        if (thread_id == 0u) {
+            atomicStore(&count, 0);
+        }
+
+        workgroupBarrier();
+
+        for (var i = thread_id;i < params.n_expert_used * params.n_tokens;i += WG_SIZE) {
+            let row = i / params.n_expert_used;
+            let col = i % params.n_expert_used;
+            let expert = u32(ids[params.offset_ids + row * params.stride_ids_1 + col]);
+            if (own_expert == expert) {
+                let pos = atomicAdd(&count, 1u);
+                let gathered_id = own_expert * params.n_tokens + pos;
+                global_gathered_expert_used[gathered_id] = col;
+                global_gathered_tokens[gathered_id] = row;
+            }
+        }
+
+        workgroupBarrier();
+
+        if (thread_id == 0u) {
+            gathered_count_ids[own_expert] = atomicLoad(&count);
+        }
+    }
+}
Packaging of ggml-org/llama.cpp