diff --git a/example/ck_tile/01_fmha/codegen/ops/fmha_bwd.py b/example/ck_tile/01_fmha/codegen/ops/fmha_bwd.py
index fffa58f665..524a97ecf0 100644
--- a/example/ck_tile/01_fmha/codegen/ops/fmha_bwd.py
+++ b/example/ck_tile/01_fmha/codegen/ops/fmha_bwd.py
@@ -293,6 +293,42 @@ float fmha_bwd_(const ck_tile::stream_config& s, fmha_bwd_args a)
     );
 }}
 
+template <typename dot_do_o_trait_>
+float fmha_ext_bwd_(const ck_tile::stream_config& s, fmha_bwd_args a,  unsigned char bwd_ext_asm[], const std::string& bwd_ext_name)
+{{
+    if(s.log_level_ > 0)
+        std::cout << ", " << fmha_bwd_dot_do_o_get_name_<dot_do_o_trait_>() << ", " << bwd_ext_name << std::flush;
+    fmha_bwd_asm_args args;
+    args.ptr_dq  = a.dq_ptr;
+    args.ptr_dk  = a.dk_ptr;
+    args.ptr_dv  = a.dv_ptr;
+    args.ptr_q   = a.q_ptr;
+    args.ptr_k   = a.k_ptr;
+    args.ptr_v   = a.v_ptr;
+    args.ptr_do  = a.do_ptr;
+    args.ptr_lse = a.lse_ptr;
+    args.ptr_d   = a.d_ptr;
+    args.scalar  = a.scale;
+    args.log2e   = ck_tile::log2e_v<float>;
+    args.seq_len = a.seqlen_q;
+    args.Ts      = 128 * a.hdim_q * 2;
+    args.Hs      = a.seqlen_q * a.hdim_q * 2;
+    args.BAs     = a.nhead_q * a.seqlen_q * a.hdim_q * 2;
+    auto traits = fmha_bwd_ext_traits{{a.batch,
+                                       a.nhead_q,
+                                       a.seqlen_q,
+                                       a.hdim_q,
+                                       1,
+                                       a.mask_type,
+                                       32,
+                                       128}};
+    fmha_bwd_ext_kernel impl(HSA_KERNEL, bwd_ext_asm);
+    return ck_tile::launch_kernel(s,
+        [=](const ck_tile::stream_config& s_){{ fmha_bwd_dot_do_o_oneshot_<dot_do_o_trait_>(s_, a); }},
+        [=](const ck_tile::stream_config& s_){{ impl.launch_kernel(traits, args, s_); }}
+    );
+}}
+
 template <typename dot_do_o_trait_, typename convert_dq_trait_>
 float fmha_ext_bwd_(const ck_tile::stream_config& s, fmha_bwd_args a,  unsigned char bwd_ext_asm[], const std::string& bwd_ext_name)
 {{
@@ -338,11 +374,19 @@ float fmha_bwd(fmha_bwd_traits t, fmha_bwd_args a, const ck_tile::stream_config&
                     (a.seqlen_q == a.seqlen_k) && (a.seqlen_k % 128 == 0) && (a.hdim_q == 128) && (a.hdim_v == 128) && (t.is_deterministic == false)) {{
             if(t.data_type.compare("fp16") == 0){{
                 if(t.mask_type == mask_enum::no_mask){{
-                    using dot_do_o_trait_ = fmha_bwd_dot_do_o_traits_<128, ck_tile::fp16_t, false, false, false>;
-                    using convert_dq_trait_ = fmha_bwd_convert_dq_traits_<128, ck_tile::fp16_t, false, false, false, false>;
-                    const std::string bwd_ext_name = "bwd_ext_fp16_a32";
-                    r = fmha_ext_bwd_<dot_do_o_trait_, convert_dq_trait_>(s, a, bwd_fp16_a32, bwd_ext_name);
-                    return r;
+                    if(t.is_asm_atomic_fp32 == true){{
+                        using dot_do_o_trait_ = fmha_bwd_dot_do_o_traits_<128, ck_tile::fp16_t, false, false, false>;
+                        using convert_dq_trait_ = fmha_bwd_convert_dq_traits_<128, ck_tile::fp16_t, false, false, false, false>;
+                        const std::string bwd_ext_name = "bwd_ext_fp16_a32";
+                        r = fmha_ext_bwd_<dot_do_o_trait_, convert_dq_trait_>(s, a, bwd_fp16_a32, bwd_ext_name);
+                        return r;
+                    }}
+                    else{{
+                        using dot_do_o_trait_ = fmha_bwd_dot_do_o_traits_<128, ck_tile::fp16_t, false, false, false>;
+                        const std::string bwd_ext_name = "bwd_ext_fp16_a16";
+                        r = fmha_ext_bwd_<dot_do_o_trait_>(s, a, bwd_fp16_a16, bwd_ext_name);
+                        return r;
+                    }}
                 }}
                 else if((t.mask_type != mask_enum::no_mask) && ((a.window_size_left == -1) && (a.window_size_right == 0))){{
                     using dot_do_o_trait_ = fmha_bwd_dot_do_o_traits_<128, ck_tile::fp16_t, false, false, false>;