[Ck tile] support rmsnorm and related fusion (#1605)

* Add reduce2d new api

* Prevent user use cross warp reduction

* Fix bug of std caculation

* Add rmsnorm2d

* Add rmsnorm small example

* Remove static assert to prevent compile fail

* Add script to test performance and correctness

* Add missing cmake change

* refine naming

* refine example of rmsnorm

* Fix bug of rmsnorm

* Refine naming

* Fix cmake

* clang format

* Refine pipeline name

* Add add_rmsnorm2d_rdquant kernel

* Add reduce op

* host verification

* Fix bug of one pass pipeline

* Refine tile size

* Add two pass pipeline

* Rename two pass to three pass

* Fix bug of kSaveX == false

* Add instance library

* Add test script

* Fix bug of x verification

* Add save_x to trait

* Add README

* Move reduce2d into reduce folder

* Fix bug of welford when number of m warp > 1

* remove reduncant comment

* 1. move 06_rmsnorm2d to 10_rmsnorm2d
2. move 07_add_rmsnorm2d_rdquant to 11_add_rmsnorm2d_rdquant

* clang format and add missing header

* Add host validation of add + layernorm2d + rsquant

* Revert "Add host validation of add + layernorm2d + rsquant"

This reverts commit 936cb45797.

* Remove deprecated flag

include/ck_tile/host/reference/reference_rowwise_quantization2d.hpp

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include "ck_tile/core.hpp"
+#include "ck_tile/host/host_tensor.hpp"
+#include <thread>
+
+namespace ck_tile {
+template <typename XDataType, typename ScaleDataType, typename QXDataType>
+CK_TILE_HOST void reference_rowwise_quantization2d(const HostTensor<XDataType>& x_m_n,
+                                                   const HostTensor<ScaleDataType>& scale_m,
+                                                   HostTensor<QXDataType>& qx_m_n)
+{
+    auto f = [&](auto m) {
+        const int N = x_m_n.mDesc.get_lengths()[1];
+
+        for(int n = 0; n < N; ++n)
+        {
+            auto v_x = x_m_n(m, n);
+            // scale = amax / 127 for int8
+            auto v_scale = type_convert<XDataType>(scale_m(m));
+            auto v_qx    = v_x / v_scale;
+            qx_m_n(m, n) = saturates<QXDataType>{}(v_qx);
+        }
+    };
+
+    make_ParallelTensorFunctor(f,
+                               scale_m.mDesc.get_lengths()[0])(std::thread::hardware_concurrency());
+}
+
+} // namespace ck_tile