diff --git a/example/ck_tile/18_hstu_attention/scripts/test_group_hstu_attention_with_dropout.sh b/example/ck_tile/18_hstu_attention/scripts/test_group_hstu_attention_with_dropout.sh
new file mode 100644
index 0000000000..eaf82c9659
--- /dev/null
+++ b/example/ck_tile/18_hstu_attention/scripts/test_group_hstu_attention_with_dropout.sh
@@ -0,0 +1,70 @@
+#!/bin/bash
+
+BUILD=build
+EXE="$BUILD/bin/tile_example_hstu_attention -p_drop=0.2"
+
+ndist=0
+
+if [ $# -ge 2 ]; then
+    ndist=$1
+fi
+
+for dtype in "fp16" "bf16"; do
+    set -x
+
+    ## no masking
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=0 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=0,3,0 -g_context_lens=0,0,0 -g_minfull_lens=0,0,0 -g_attn_scales=0,0.1,0
+
+    ## causal
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=0,3,0 -g_context_lens=0,0,0 -g_minfull_lens=0,0,0 -g_attn_scales=0,0.1,0
+
+    ## causal+local
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=0,0,0 -g_minfull_lens=0,0,0 -g_attn_scales=0,0.1,0
+
+    ## causal+local+context
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=7,7,7 -g_attn_scales=0,0.1,0
+
+    ## causal+local+context+target
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=7,7,7 -g_attn_scales=0,0.1,0
+
+    ##  no-causal+local+context+target
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=0 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=7,7,7 -g_attn_scales=0,0.1,0
+
+    ## causal+local+target (minfull_len > max_uih_len)
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=290,290,290 -g_attn_scales=0,0.1,0
+
+    ## causal+local+context+target (minfull_len > max_uih_len)
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=290,290,290 -g_attn_scales=0,0.1,0
+
+    ## no-causal+local+context+target (minfull_len > max_uih_len)
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=0 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=3,3,3 -g_minfull_lens=290,290,290 -g_attn_scales=0,0.1,0
+
+    set +x
+done
+
+set -x
+## special cases
+$EXE -v=1 -prec="bf16" -b=32 -g=4 -nhead=4 -hdim_qk=16 -hdim_v=64 -causal=1 \
+        -seqlens=159,176,195,224,237,188,176,167,153,187,181,162,211,236,177,180,251,183,175,176,172,163,242,176,202,255,200,217,201,252,162,188  \
+        -targets=401,72,259,50,104,475,147,205,192,331,231,199,273,344,434,356,369,238,362,467,140,96,49,113,115,38,96,66,225,343,293,220   \
+        -norm_dist=$ndist -alpha=0.25 -g_max_seqlens=768,768,768,768 -g_local_lens=25,27,17,32 -g_context_lens=0,0,0,0 -g_minfull_lens=49,3,33,26 -g_attn_scales=0.0013,0.0013,0.0013,0.0013
+
+$EXE -v=1 -prec="bf16" -b=16 -g=2 -nhead=109 -hdim_qk=16 -hdim_v=16 -causal=1 \
+        -seqlens=89,84,80,60,69,78,67,61,65,98,94,85,88,60,89,84 \
+	-targets=20,4,7,5,3,16,7,5,15,11,6,16,14,11,15,11 \
+	-norm_dist=$ndist -alpha=0.25 -g_max_seqlens=120,120 -g_local_lens=13,2 -g_context_lens=0,0 -g_minfull_lens=14,9 -g_attn_scales=0.0083,0.0083
+
+$EXE -v=1 -prec="bf16" -b=8 -g=2 -nhead=4 -hdim_qk=16 -hdim_v=16 -causal=1 \
+        -seqlens=81,77,91,72,95,87,73,88 -targets=5,11,4,15,1,18,4,8 \
+        -norm_dist=$ndist -alpha=0.25 -g_max_seqlens=120,120 -g_local_lens=13,2 -g_context_lens=0,0 -g_minfull_lens=14,9 -g_attn_scales=0.0083,0.0083
+
+set +x
diff --git a/example/ck_tile/18_hstu_attention/scripts/test_group_hstu_softmax_attention_with_dropout.sh b/example/ck_tile/18_hstu_attention/scripts/test_group_hstu_softmax_attention_with_dropout.sh
new file mode 100644
index 0000000000..ae904c7956
--- /dev/null
+++ b/example/ck_tile/18_hstu_attention/scripts/test_group_hstu_softmax_attention_with_dropout.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+
+BUILD=build
+Training=${TEST_HSTU_FWD_TRAINING:-0}
+
+EXE="$BUILD/bin/tile_example_hstu_attention -softmax=1 -training=$Training -p_drop=0.2"
+
+ndist=0
+
+if [ $# -ge 2 ]; then
+    ndist=$1
+fi
+
+for dtype in "fp16" "bf16"; do
+    set -x
+
+    ## no masking
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=0 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=0,3,0 -g_context_lens=0,0,0 -g_minfull_lens=0,0,0 -g_attn_scales=0,0.1,0
+
+    ## causal
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=0,3,0 -g_context_lens=0,0,0 -g_minfull_lens=0,0,0 -g_attn_scales=0,0.1,0
+
+    ## causal+local
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=0,0,0 -g_minfull_lens=0,0,0 -g_attn_scales=0,0.1,0
+
+    ## causal+local+context
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=0 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=7,7,7 -g_attn_scales=0,0.1,0
+
+    ## causal+local+context+target
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=7,7,7 -g_attn_scales=0,0.1,0
+
+    ##  no-causal+local+context+target
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=0 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=7,7,7 -g_attn_scales=0,0.1,0
+
+    ## causal+local+target (minfull_len > max_uih_len)
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=290,290,290 -g_attn_scales=0,0.1,0
+
+    ## causal+local+context+target (minfull_len > max_uih_len)
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=1 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=8,8,8 -g_minfull_lens=290,290,290 -g_attn_scales=0,0.1,0
+
+    ## no-causal+local+context+target (minfull_len > max_uih_len)
+    $EXE -v=1 -prec=$dtype -b=18 -g=3 -nhead=4 -hdim_qk=128 -hdim_v=128 -seqlens=300,300,290,280,310,308,312 -causal=0 -targets=8 -norm_dist=$ndist \
+      -g_max_seqlens=310,312,312 -g_local_lens=5,5,5 -g_context_lens=3,3,3 -g_minfull_lens=290,290,290 -g_attn_scales=0,0.1,0
+
+    set +x
+done
+
+set -x
+## special cases
+$EXE -v=1 -prec="bf16" -b=32 -g=4 -nhead=4 -hdim_qk=16 -hdim_v=64 -causal=1 \
+        -seqlens=159,176,195,224,237,188,176,167,153,187,181,162,211,236,177,180,251,183,175,176,172,163,242,176,202,255,200,217,201,252,162,188  \
+        -targets=401,72,259,50,104,475,147,205,192,331,231,199,273,344,434,356,369,238,362,467,140,96,49,113,115,38,96,66,225,343,293,220   \
+        -norm_dist=$ndist -alpha=0.25 -g_max_seqlens=768,768,768,768 -g_local_lens=25,27,17,32 -g_context_lens=0,0,0,0 -g_minfull_lens=49,3,33,26 -g_attn_scales=0.0013,0.0013,0.0013,0.0013
+
+$EXE -v=1 -prec="bf16" -b=16 -g=2 -nhead=109 -hdim_qk=16 -hdim_v=16 -causal=1 \
+        -seqlens=89,84,80,60,69,78,67,61,65,98,94,85,88,60,89,84 \
+	-targets=20,4,7,5,3,16,7,5,15,11,6,16,14,11,15,11 \
+	-norm_dist=$ndist -alpha=0.25 -g_max_seqlens=120,120 -g_local_lens=13,2 -g_context_lens=0,0 -g_minfull_lens=14,9 -g_attn_scales=0.0083,0.0083
+
+$EXE -v=1 -prec="bf16" -b=8 -g=2 -nhead=4 -hdim_qk=16 -hdim_v=16 -causal=1 \
+        -seqlens=81,77,91,72,95,87,73,88 -targets=5,11,4,15,1,18,4,8 \
+        -norm_dist=$ndist -alpha=0.25 -g_max_seqlens=120,120 -g_local_lens=13,2 -g_context_lens=0,0 -g_minfull_lens=14,9 -g_attn_scales=0.0083,0.0083
+
+set +x