zhangyiss/mlx
1
0
Fork 0
mirror of https://github.com/ml-explore/mlx.git synced 2025-09-23 22:18:13 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix qvm splitk (#2415)

Browse Source
This commit is contained in:
Awni Hannun
2025-07-25 11:50:24 -07:00
committed by GitHub
parent 9acec364c2
commit 5597fa089c
2 changed files with 24 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
mlx/backend/metal/quantized.cpp
View File

@@ -265,9 +265,15 @@ void qvm_split_k(
MTL::Size group_dims = MTL::Size(bk, 2, 1);
MTL::Size grid_dims = MTL::Size(M, N / bn, B);
int x_batch_ndims = x.ndim() - 2;
auto x_shape = x.shape();
auto x_strides = x.strides();
if (x_shape.size() == 1) {
x_shape.insert(x_shape.begin(), 1);
x_strides.insert(x_strides.begin(), 0);
}
int x_ndim = x_shape.size();
int x_batch_ndims = x_ndim - 2;
int w_batch_ndims = w.ndim() - 2;
auto w_shape = w.shape();
auto w_strides = w.strides();
@@ -278,7 +284,7 @@ void qvm_split_k(
x_shape.insert(x_shape.end() - 2, split_k);
x_shape.back() /= split_k;
x_strides.insert(x_strides.end() - 2, split_D);
x_strides[x.ndim() - 1] = split_D;
x_strides[x_ndim - 1] = split_D;
x_batch_ndims += 1;
w_shape.insert(w_shape.end() - 2, split_k);
@@ -291,6 +297,9 @@ void qvm_split_k(
int final_block_size = K - (split_k - 1) * split_D;
auto temp_shape = out.shape();
if (temp_shape.size() == 1) {
temp_shape.insert(temp_shape.begin(), 1);
}
temp_shape.insert(temp_shape.end() - 2, split_k);
array intermediate(temp_shape, x.dtype(), nullptr, {});
intermediate.set_data(allocator::malloc(intermediate.nbytes()));