diff --git a/src/models/common/mod.rs b/src/models/common/mod.rs
index f306893..155fbb9 100644
--- a/src/models/common/mod.rs
+++ b/src/models/common/mod.rs
@@ -316,6 +316,7 @@ pub fn eager_attention_forward(
             attn_output
         }
     };
+    //(b, n_head, seq_len, dim) -> (b, seq_len, n_head, dim)
     let attn_output = attn_output.transpose(1, 2)?.contiguous()?;
 
     Ok(attn_output)
diff --git a/src/models/deepseek_ocr/model.rs b/src/models/deepseek_ocr/model.rs
index de002ad..10d2f5b 100644
--- a/src/models/deepseek_ocr/model.rs
+++ b/src/models/deepseek_ocr/model.rs
@@ -1,11 +1,14 @@
 use anyhow::{Ok, Result};
-use candle_core::{IndexOp, Tensor};
+use candle_core::{D, IndexOp, Tensor};
 use candle_nn::{
-    Conv2d, Conv2dConfig, Init, LayerNorm, Linear, Module, VarBuilder, conv2d, linear,
-    linear_no_bias,
+    Activation, Conv2d, Conv2dConfig, Init, LayerNorm, LayerNormConfig, Linear, Module, VarBuilder,
+    conv2d, layer_norm, linear, linear_no_bias,
 };
 
-use crate::models::deepseek_ocr::config::DeepseekOCRConfig;
+use crate::{
+    models::{common::eager_attention_forward, deepseek_ocr::config::DeepseekOCRConfig},
+    utils::tensor_utils::{index_select_2d, interpolate_linear},
+};
 
 pub struct PatchEmbed {
     proj: Conv2d,
@@ -93,43 +96,265 @@ impl Attention {
         })
     }
 
-    // fn get_rel_pos(q_size: usize, k_size: usize, rel_pos: &Tensor) -> Result<Tensor> {
-    //     let max_rel_dist = 2 * std::cmp::max(q_size, k_size) - 1;
-    //     let rel_pos_resized = if rel_pos.dim(0)? != max_rel_dist {
-    //         let dtype = rel_pos.dtype();
-    //         let rel_pos = rel_pos.to_dtype(candle_core::DType::F32)?;
-    //         let rel_pos_resized = 
-    //     }
-    // }
-    // fn add_decomposed_rel_pos(&self, q: &Tensor, rel_pos_h: &Tensor, rel_pos_w: &Tensor, q_size: (usize, usize), k_size: (usize, usize)) -> Result<Tensor> {
-    //     let (q_h, q_w) = q_size;
-    //     let (k_h, k_w) = k_size;
-        
-    // }
+    fn get_rel_pos(&self, q_size: usize, k_size: usize, rel_pos: &Tensor) -> Result<Tensor> {
+        let max_rel_dist = 2 * std::cmp::max(q_size, k_size) - 1;
+        let rel_pos_resized = if rel_pos.dim(0)? != max_rel_dist {
+            let rel_pos = rel_pos
+                .to_dtype(candle_core::DType::F32)?
+                .t()?
+                .unsqueeze(0)?
+                .contiguous()?;
+            let rel_pos_resized = interpolate_linear(&rel_pos, max_rel_dist, None)?;
+            let rel_pos_resized = rel_pos_resized
+                .squeeze(0)?
+                .t()?
+                .contiguous()?
+                .to_dtype(rel_pos.dtype())?;
+            rel_pos_resized
+        } else {
+            rel_pos.clone()
+        };
+        let q_coords = Tensor::arange(0 as f32, q_size as f32, rel_pos.device())?
+            .unsqueeze(D::Minus1)?
+            .affine((k_size as f64 / q_size as f64).max(1.0), 0.0)?;
+        let k_coords = Tensor::arange(0 as f32, k_size as f32, rel_pos.device())?
+            .unsqueeze(0)?
+            .affine((q_size as f64 / k_size as f64).max(1.0), 0.0)?;
+        let relative_coords = q_coords
+            .broadcast_sub(&k_coords)?
+            .affine(1.0, (k_size - 1) as f64)?
+            .affine((q_size as f64 / k_size as f64).max(1.0), 0.0)?;
+        let relative_coords = relative_coords
+            .to_dtype(candle_core::DType::U32)?
+            .contiguous()?;
+        let rel_pos_resized = rel_pos_resized.contiguous()?;
+        let res = index_select_2d(&rel_pos_resized, &relative_coords)?;
+        Ok(res)
+    }
 
-    // pub fn forward(&mut self, xs: &Tensor) -> Result<Tensor> {
-    //     let (b, h, w, _) = xs.dims4()?;
-    //     // (3, B, n_head, h*w, head_dim)
-    //     let qkv = self
-    //         .qkv
-    //         .forward(xs)?
-    //         .reshape((b, h * w, 3, self.num_heads, ()))?
-    //         .permute((2, 0, 3, 1, 4))?
-    //         .contiguous()?;
-    //     let query_states = qkv.i(0)?.contiguous()?;
-    //     let key_states = qkv.i(1)?.contiguous()?;
-    //     let value_states = qkv.i(2)?.contiguous()?;
-    //     let xs = if self.use_rel_pos {
-    //         let (rel_h, rel_w) = 
-    //     } else {
+    fn add_decomposed_rel_pos(
+        &self,
+        q: &Tensor,
+        rel_pos_h: &Tensor,
+        rel_pos_w: &Tensor,
+        q_size: (usize, usize),
+        k_size: (usize, usize),
+    ) -> Result<(Tensor, Tensor)> {
+        let (q_h, q_w) = q_size;
+        let (k_h, k_w) = k_size;
+        let rh = self.get_rel_pos(q_h, k_h, rel_pos_h)?; // (h, w, dim)
+        let rh = rh.t()?; // (h, dim, w)        
+        let rw = self.get_rel_pos(q_w, k_w, rel_pos_w)?;
+        let rw = rw.t()?;
+        let (b, _, dim) = q.dims3()?;
+        let r_q = q.reshape((b, q_h, q_w, dim))?;
+        let rel_h = r_q.broadcast_matmul(&rh)?;
+        let rel_w = r_q.broadcast_matmul(&rw)?;
+        let rel_h = rel_h
+            .unsqueeze(D::Minus1)?
+            .reshape((b, q_h * q_w, k_h, 1))?;
+        let rel_w = rel_w
+            .unsqueeze(D::Minus2)?
+            .reshape((b, q_h * q_w, 1, k_w))?;
+        Ok((rel_h, rel_w))
+    }
 
-    //     }
-    // }
+    pub fn forward(&mut self, xs: &Tensor) -> Result<Tensor> {
+        let (b, h, w, _) = xs.dims4()?;
+        // (3, B, n_head, h*w, head_dim)
+        let qkv = self
+            .qkv
+            .forward(xs)?
+            .reshape((b, h * w, 3, self.num_heads, ()))?
+            .permute((2, 0, 3, 1, 4))?
+            .contiguous()?;
+        let query_states = qkv.i(0)?.contiguous()?;
+        let key_states = qkv.i(1)?.contiguous()?;
+        let value_states = qkv.i(2)?.contiguous()?;
+        let xs = if self.use_rel_pos {
+            let q_reshape = query_states.reshape((b * self.num_heads, h * w, ()))?;
+            let (rel_h, rel_w) = self.add_decomposed_rel_pos(
+                &q_reshape,
+                self.rel_pos_h.as_ref().unwrap(),
+                self.rel_pos_w.as_ref().unwrap(),
+                (h, w),
+                (h, w),
+            )?;
+            let (_, rel_h_dim1, rel_h_dim2, rel_h_dim3) = rel_h.dims4()?;
+            let rel_h = rel_h.reshape((b, self.num_heads, rel_h_dim1, rel_h_dim2, rel_h_dim3))?;
+            let (_, rel_w_dim1, rel_w_dim2, rel_w_dim3) = rel_w.dims4()?;
+            let rel_w = rel_w.reshape((b, self.num_heads, rel_w_dim1, rel_w_dim2, rel_w_dim3))?;
+            let attn_bias = rel_h.broadcast_add(&rel_w)?.reshape((
+                b,
+                self.num_heads,
+                rel_h_dim1,
+                rel_h_dim2 * rel_w_dim3,
+            ))?;
+            let xs = eager_attention_forward(
+                &query_states,
+                &key_states,
+                &value_states,
+                None,
+                Some(&attn_bias),
+                self.scaling,
+            )?;
+            xs
+        } else {
+            eager_attention_forward(
+                &query_states,
+                &key_states,
+                &value_states,
+                None,
+                None,
+                self.scaling,
+            )?
+        };
+        // (b, h*w, n_head, dim)
+        let xs = xs.reshape((b, h * w, ()))?.reshape((b, h, w, ()))?;
+        let xs = self.proj.forward(&xs)?;
+        Ok(xs)
+    }
+}
+
+pub struct MLPBlock {
+    linear1: Linear,
+    linear2: Linear,
+    act: Activation,
+}
+
+impl MLPBlock {
+    pub fn new(
+        vb: VarBuilder,
+        embedding_dim: usize,
+        mlp_dim: usize,
+        act: Activation,
+    ) -> Result<Self> {
+        let linear1 = linear(embedding_dim, mlp_dim, vb.pp("lin1"))?;
+        let linear2 = linear(mlp_dim, embedding_dim, vb.pp("lin2"))?;
+        Ok(Self {
+            linear1,
+            linear2,
+            act,
+        })
+    }
+    pub fn forward(&self, xs: &Tensor) -> Result<Tensor> {
+        let xs = xs
+            .apply(&self.linear1)?
+            .apply(&self.act)?
+            .apply(&self.linear2)?;
+        Ok(xs)
+    }
 }
 
 pub struct Block {
     norm1: LayerNorm,
     attn: Attention,
+    norm2: LayerNorm,
+    mlp: MLPBlock,
+    window_size: usize,
+}
+
+impl Block {
+    pub fn new(
+        vb: VarBuilder,
+        dim: usize,
+        num_heads: usize,
+        mlp_ratio: f32,
+        qkv_bias: bool,
+        eps: f64,
+        act: Activation,
+        use_rel_pos: bool,
+        rel_pos_zero_init: bool,
+        window_size: usize,
+        input_size: Option<(usize, usize)>,
+    ) -> Result<Self> {
+        let ln_config = LayerNormConfig {
+            eps,
+            remove_mean: true, // true for layernorm, false for RMSNorm
+            affine: true,      // true for with bias, false for without bias
+        };
+        let norm1 = layer_norm(dim, ln_config, vb.pp("norm1"))?;
+        let input_size = if window_size == 0 {
+            input_size
+        } else {
+            Some((window_size, window_size))
+        };
+        let attn = Attention::new(
+            vb.pp("attn"),
+            dim,
+            num_heads,
+            qkv_bias,
+            use_rel_pos,
+            input_size,
+        )?;
+        let norm2 = layer_norm(dim, ln_config, vb.pp("norm2"))?;
+        let mlp_dim = (dim as f32 * mlp_ratio) as usize;
+        let mlp = MLPBlock::new(vb.pp("mlp"), dim, mlp_dim, act)?;
+        Ok(Self {
+            norm1,
+            attn,
+            norm2,
+            mlp,
+            window_size,
+        })
+    }
+
+    pub fn window_partition(
+        &self,
+        x: &Tensor,
+        window_size: usize,
+    ) -> Result<(Tensor, (usize, usize))> {
+        let (b, h, w, c) = x.dims4()?;
+        let pad_h = (window_size - h % window_size) % window_size;
+        let pad_w = (window_size - w % window_size) % window_size;
+        let x = if pad_h > 0 || pad_w > 0 {
+            let x = x.pad_with_zeros(1, 0, pad_h)?;
+            let x = x.pad_with_zeros(2, 0, pad_w)?;
+            x
+        } else {
+            x.clone()
+        };
+        let hp = h + pad_h;
+        let wp = w + pad_w;
+        let x = x.reshape((
+            b,
+            hp / window_size,
+            window_size,
+            wp / window_size,
+            window_size,
+            c,
+        ))?;
+        let windows = x.permute((0, 1, 3, 2, 4, 5))?.contiguous()?.reshape((
+            (),
+            window_size,
+            window_size,
+            c,
+        ))?;
+        Ok((windows, (hp, wp)))
+    }
+
+    // pub fn window_unpartition(
+    //     &self,
+    //     x: &Tensor,
+    //     window_size: usize,
+    //     pad_hw: (usize, usize),
+    //     hw: (usize, usize),
+    // ) -> Result<Tensor> {
+
+    // }
+
+    // pub fn forward(&self, xs: &Tensor) -> Result<Tensor> {
+    //     let shortcut = xs.clone();
+    //     let xs = self.norm1.forward(xs)?;
+    //     let xs = if self.window_size > 0 {
+    //         let h = xs.dim(1)?;
+    //         let w = xs.dim(2)?;
+    //         let (x, (hp, wp)) = self.window_partition(&xs, self.window_size)?;
+    //         let x = self.attn.forward(&x)?;
+    //     } else {
+    //         self.attn.forward(&xs)?
+    //     };
+    // }
 }
 
 pub struct ImageEncoderViT {
diff --git a/src/utils/tensor_utils.rs b/src/utils/tensor_utils.rs
index 2da0720..2850969 100644
--- a/src/utils/tensor_utils.rs
+++ b/src/utils/tensor_utils.rs
@@ -1,5 +1,6 @@
 use anyhow::{Ok, Result, anyhow};
 use candle_core::{D, DType, Device, IndexOp, Tensor, shape::Dim};
+use rocket::figment::value;
 
 pub fn prepare_causal_attention_mask(
     b_size: usize,
@@ -8,10 +9,14 @@ pub fn prepare_causal_attention_mask(
     device: &Device,
 ) -> Result<Tensor> {
     // Sliding window mask?
-    let mask: Vec<_> = (0..tgt_len)
-        .flat_map(|i| (0..tgt_len).map(move |j| if i < j { f32::NEG_INFINITY } else { 0. }))
-        .collect();
-    let mask = Tensor::from_slice(&mask, (tgt_len, tgt_len), device)?;
+    // let mask: Vec<_> = (0..tgt_len)
+    //     .flat_map(|i| (0..tgt_len).map(move |j| if i < j { f32::NEG_INFINITY } else { 0. }))
+    //     .collect();
+    // let mask = Tensor::from_vec(mask, (tgt_len, tgt_len), device)?;
+    let arange = Tensor::arange(0u32, tgt_len as u32, device)?;
+    let arange = arange.unsqueeze(1)?.broadcast_as((tgt_len, tgt_len))?;
+    let upper_triangle = arange.t()?.lt(&arange)?.to_dtype(DType::F32)?;
+    let mask = upper_triangle.where_cond(&Tensor::new(f32::NEG_INFINITY, device)?, &Tensor::new(0f32, device)?)?;
     let mask = if seqlen_offset > 0 {
         let mask0 = Tensor::zeros((tgt_len, seqlen_offset), DType::F32, device)?;
         Tensor::cat(&[&mask0, &mask], D::Minus1)?
@@ -346,3 +351,89 @@ pub fn mask_index_add(original: &Tensor, mask: &Tensor, add: &Tensor) -> Result<
     let xs = original.index_add(&visual_nonzero_index, add, 0)?;
     Ok(xs)
 }
+
+pub fn interpolate_linear(
+    t: &Tensor,
+    target_size: usize,
+    align_corner: Option<bool>,
+) -> Result<Tensor> {
+    // t: [b, channels, features]
+    let shape = t.dims();
+    let orig_size = shape[shape.len() - 1];
+    if orig_size == target_size {
+        return Ok(t.clone());
+    }
+    let mut reshaped = t.clone();
+    if shape.len() != 3 {
+        let bs = shape[0];
+        let channels = shape[1..shape.len() - 1].iter().product::<usize>();
+        reshaped = reshaped.reshape((bs, channels, orig_size))?;
+    }
+    let (bs, channels, _) = reshaped.dims3()?;
+    let mut output = Tensor::zeros((bs, channels, target_size), t.dtype(), &t.device())?;
+    let coords = if orig_size == 1 {
+        vec![0f32; target_size]
+    } else {
+        let coords_vec = if let Some(align_) = align_corner
+            && align_
+        {
+            (0..target_size)
+                .map(|i| i as f32 * (orig_size - 1) as f32 / (target_size - 1) as f32)
+                .collect()
+        } else {            
+            (0..target_size)
+                .map(|i| {
+                    let coord = (i as f32 + 0.5) * (orig_size as f32 / target_size as f32) - 0.5;
+                    coord.max(0.0).min((orig_size-1) as f32)
+                })
+                .collect()
+        };
+        coords_vec
+    };
+
+    for b in 0..bs {
+        for c in 0..channels {
+            let input_slice = reshaped.i((b, c))?;
+            let mut out_i = Vec::new();
+            for x_out in 0..target_size {
+                let coord = coords[x_out];
+                let x0 = coord.floor() as usize;
+                let x1 = std::cmp::min(x0 + 1, orig_size - 1);
+                let weight = (coord - x0 as f32) as f64;
+                let value0 = input_slice.get(x0)?;
+                let value1 = input_slice.get(x1)?;
+                let interpolated =
+                    (value0.affine(1.0 - weight, 0.0)? + value1.affine(weight, 0.0)?)?;
+                out_i.push(interpolated);
+            }
+            let out_i = Tensor::stack(&out_i, 0)?.unsqueeze(0)?.unsqueeze(0)?;
+            output = output.slice_assign(&[(b..b+1), (c..c+1), (0..target_size)], &out_i)?;
+        }
+    }
+    if shape.len() != 3 {
+        let mut new_shape = shape.to_vec();
+        let last_dim = new_shape.len()-1;
+        new_shape[last_dim] = target_size;
+        output = output.reshape(new_shape)?
+
+    }
+    output = output.contiguous()?;
+    Ok(output)
+}
+
+pub fn index_select_2d(t: &Tensor, index: &Tensor) -> Result<Tensor> {
+    if t.rank() != 2 && index.rank() != 2 {
+        return Err(anyhow::anyhow!(
+                    "t and index rank must be equal to 2"
+                ));
+    }
+    let mut res_vec = Vec::new();
+    let index_dim0 = index.dim(0)?;
+    for i in 0..index_dim0 {
+        let index_i = index.i(i)?;
+        let rel_i = t.index_select(&index_i, 0)?;
+        res_vec.push(rel_i);
+    } 
+    let res = Tensor::stack(&res_vec, 0)?;
+    Ok(res)
+}
\ No newline at end of file
diff --git a/tests/messy_test.rs b/tests/messy_test.rs
index 72d7062..1913b37 100644
--- a/tests/messy_test.rs
+++ b/tests/messy_test.rs
@@ -1,15 +1,38 @@
+use aha::utils::tensor_utils::{index_select_2d, interpolate_linear};
 use anyhow::Result;
 use candle_core::{IndexOp, Tensor};
 
 #[test]
 fn messy_test() -> Result<()> {
+    // RUST_BACKTRACE=1 cargo test -F cuda messy_test -- --nocapture
     let device = &candle_core::Device::Cpu;
-    let grid_thw = Tensor::new(vec![vec![3u32, 12, 20], vec![5, 30, 25]], device)?;
-    let cu_seqlens = grid_thw.i((.., 1))?.mul(&grid_thw.i((.., 2))?)?;
-    let grid_t = grid_thw.i((.., 0))?.to_vec1::<u32>()?;
-    println!("cu_seqlens: {}", cu_seqlens);
-    println!("cu_seqlens rank: {}", cu_seqlens.rank());
-    println!("grid_t: {:?}", grid_t);
+    let t1 = Tensor::rand(0.0, 1.0, (1, 5, 5, 10), device)?;
+    let t2 = Tensor::rand(0.0, 1.0, (5, 8, 10), device)?;
+    let t2 = t2.t()?;
+    println!("t2: {:?}", t2);
+    let re = t1.broadcast_matmul(&t2)?;
+    println!("re: {:?}", re);
+    // let index = Tensor::arange(0u32, 10u32, device)?;
+    // let index_2d_vec = vec![index;5];
+    // let index_2d = Tensor::stack(&index_2d_vec, 0)?;
+    // println!("index_2d: {}", index_2d);
+    // let t = Tensor::rand(0.0, 1.0, (20, 8), device)?;
+    // println!("t: {}", t);
+    // let res = index_select_2d(&t, &index_2d)?;
+    // println!("res: {}", res);
+    // let t = Tensor::arange(0.0, 10.0, device)?
+    //     .unsqueeze(0)?
+    //     .unsqueeze(0)?;
+    // println!("t: {}", t);
+    // let t_resized = interpolate_linear(&t, 20, None)?;
+    // println!("t_resized: {}", t_resized);
+
+    // let grid_thw = Tensor::new(vec![vec![3u32, 12, 20], vec![5, 30, 25]], device)?;
+    // let cu_seqlens = grid_thw.i((.., 1))?.mul(&grid_thw.i((.., 2))?)?;
+    // let grid_t = grid_thw.i((.., 0))?.to_vec1::<u32>()?;
+    // println!("cu_seqlens: {}", cu_seqlens);
+    // println!("cu_seqlens rank: {}", cu_seqlens.rank());
+    // println!("grid_t: {:?}", grid_t);
     // let image_mask = Tensor::new(vec![0u32, 0, 0, 1, 0, 1], device)?;
     // let video_mask = Tensor::new(vec![0u32, 1, 0, 1, 0, 1], device)?;
     // let visual_mask = bitor_tensor(&image_mask, &video_mask)?;