[Gen, FT] Use fp32 accum for FMA

csrc/ft_attention/decoder_masked_multihead_attention_template.hpp

@@ -30,7 +30,7 @@
 // Below are knobs to extend FP32 accumulation for higher FP16 accuracy
 
 // Does not seem to affect the accuracy that much
-// #define MMHA_USE_FP32_ACUM_FOR_FMA
+#define MMHA_USE_FP32_ACUM_FOR_FMA
 
 // Seems to slightly improve the accuracy
 #define MMHA_USE_FP32_ACUM_FOR_OUT
@@ -271,27 +271,6 @@ struct Qk_vec_acum_fp32_<bf16_8_t> {
     using Type = Float8_;
 };
 
-template<>
-struct Qk_vec_acum_fp32_<uint4> {
-    using Type = Float8_;
-};
-template<>
-struct Qk_vec_acum_fp32_<__nv_bfloat16> {
-    using Type = float;
-};
-template<>
-struct Qk_vec_acum_fp32_<__nv_bfloat162> {
-    using Type = float2;
-};
-template<>
-struct Qk_vec_acum_fp32_<bf16_4_t> {
-    using Type = Float4_;
-};
-template<>
-struct Qk_vec_acum_fp32_<bf16_8_t> {
-    using Type = Float8_;
-};
-
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
 template<typename T>