From aaef4327b48c3c6d1202788bc0072801cdf9a16d Mon Sep 17 00:00:00 2001
From: Awni Hannun <awni@apple.com>
Date: Tue, 15 Jul 2025 13:19:40 -0700
Subject: [PATCH] try older image

---
 .circleci/config.yml          | 10 ++--------
 mlx/backend/cuda/quantized.cu | 16 ++++++++++------
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9143b5467..1e6fea821 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -201,22 +201,16 @@ jobs:
 
   cuda_build_and_test:
     machine:
-      image: linux-cuda-12:default
+      image: linux-cuda-12:2023.11.1
       resource_class: gpu.nvidia.small.gen2
     steps:
       - checkout
       - run:
           name: Install Python package
           command: |
-            wget http://security.ubuntu.com/ubuntu/pool/universe/n/ncurses/libtinfo5_6.3-2ubuntu0.1_amd64.deb
-            sudo dpkg -i libtinfo5_6.3-2ubuntu0.1_amd64.deb
-            wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/cuda-keyring_1.0-1_all.deb
-            sudo dpkg -i cuda-keyring_1.0-1_all.deb
             sudo apt-get update
-            sudo apt-get install cuda-toolkit-12-0
-            sudo update-alternatives --set cuda /usr/local/cuda-12.0
             sudo apt-get install libblas-dev liblapack-dev liblapacke-dev
-            python -m venv env
+            python3 -m venv env
             source env/bin/activate
             CMAKE_ARGS="-DMLX_BUILD_CUDA=ON -DCMAKE_CUDA_COMPILER=`which nvcc`" \
               pip install -e ".[dev]"
diff --git a/mlx/backend/cuda/quantized.cu b/mlx/backend/cuda/quantized.cu
index 12a1f6fe4..4424000d8 100644
--- a/mlx/backend/cuda/quantized.cu
+++ b/mlx/backend/cuda/quantized.cu
@@ -36,7 +36,8 @@ affine_quantize(const T* w, uint8_t* out, T* scales, T* biases, size_t size) {
   auto tidx = block_idx.x * block_size.x + idx_in_block.x;
   auto tidy = block_idx.y * block_size.y + idx_in_block.y;
 
-  auto grid_dim = cg::this_grid().dim_threads();
+  auto grid_dim_x =
+      cg::this_grid().dim_blocks().x * cg::this_grid().block_index().x;
   constexpr float eps = 1e-7;
   constexpr int simd_size = WARP_SIZE;
   constexpr float n_bins = (1 << bits) - 1;
@@ -48,7 +49,7 @@ affine_quantize(const T* w, uint8_t* out, T* scales, T* biases, size_t size) {
       writes_per_reduce > 1 ? 1 : values_per_reduce / pack_factor;
   constexpr int power_of_2_bits = (bits & (bits - 1)) == 0;
 
-  size_t offset = tidx + grid_dim.x * size_t(tidy);
+  size_t offset = tidx + grid_dim_x * size_t(tidy);
   size_t in_index = offset * values_per_reduce;
   if (in_index >= size) {
     return;
@@ -153,12 +154,13 @@ __global__ void affine_dequantize(
   auto tidx = block_idx.x * block_size.x + idx_in_block.x;
   auto tidy = block_idx.y * block_size.y + idx_in_block.y;
 
-  auto grid_dim = cg::this_grid().dim_threads();
+  auto grid_dim_x =
+      cg::this_grid().dim_blocks().x * cg::this_grid().block_index().x;
 
   constexpr int pack_factor = get_pack_factor<bits, 8>();
   constexpr int bytes_per_pack = get_bytes_per_pack<bits>();
 
-  size_t offset = tidx + grid_dim.x * size_t(tidy);
+  size_t offset = tidx + grid_dim_x * size_t(tidy);
   size_t oindex = offset * pack_factor;
 
   if (oindex >= size) {
@@ -349,7 +351,8 @@ void fast::AffineQuantize::eval_gpu(
       dispatch_bits(bits_, [&](auto bits) {
         using DataType = cuda_type_t<MLX_GET_TYPE(type_tag)>;
         if (dequantize_) {
-          auto kernel = cu::affine_dequantize<DataType, group_size(), bits()>;
+          auto kernel =
+              cu::affine_dequantize<DataType, group_size.value, bits.value>;
           auto [num_blocks, block_dims] =
               get_launch_args(kernel, size, grid_shape, w.strides(), large);
           enc.add_kernel_node(
@@ -362,7 +365,8 @@ void fast::AffineQuantize::eval_gpu(
               out.data<DataType>(),
               out.size());
         } else {
-          auto kernel = cu::affine_quantize<DataType, group_size(), bits()>;
+          auto kernel =
+              cu::affine_quantize<DataType, group_size.value, bits.value>;
           auto [num_blocks, block_dims] =
               get_launch_args(kernel, size, grid_shape, w.strides(), large);
           enc.add_kernel_node(