adding the cutlass examples

1 files changed, 102 insertions, 0 deletions

diff --git a/cutlass-example/cutlass/convert.h b/cutlass-example/cutlass/convert.h
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+/***************************************************************************************************
+ * Copyright (c) 2017-2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright notice, this list of
+ *       conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *     * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
+ *       to endorse or promote products derived from this software without specific prior written
+ *       permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ **************************************************************************************************/
+/*!
+  \file
+  \brief Defines conversion operations among Fragments of different base type.
+*/
+#pragma once
+
+#include <cutlass/fragment.h>
+
+namespace cutlass {
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+template <typename InputFragment_, typename OutputFragment_>
+struct Convert {};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+template <typename InputScalar_, typename OutputScalar_, int kScalars_>
+struct Convert<Fragment<InputScalar_, kScalars_>, Fragment<OutputScalar_, kScalars_> > {
+  /// The input fragment.
+  typedef Fragment<InputScalar_, kScalars_> InputFragment;
+  /// The output fragment.
+  typedef Fragment<OutputScalar_, kScalars_> OutputFragment;
+
+  /// Ctor.
+  CUTLASS_DEVICE Convert() {}
+
+  /// Transform a fragment.
+  CUTLASS_DEVICE void transform(InputFragment const& src, OutputFragment& dst) {
+    transform(src, 0, dst);
+  }
+
+  /// Transform a fragment.
+  template <typename Fragment_>
+  CUTLASS_DEVICE void transform(Fragment_ const& src, int offset, OutputFragment& dst) {
+    for (int i = 0; i < kScalars_; ++i) {
+      dst[i] = static_cast<OutputScalar_>(src[i + offset]);
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+template <typename Fragment_>
+struct Copy {
+  /// The input fragment.
+  typedef Fragment_ InputFragment;
+  /// The output fragment.
+  typedef Fragment_ OutputFragment;
+
+  /// Ctor.
+  CUTLASS_DEVICE Copy() {}
+
+  /// Transform a fragment.
+  CUTLASS_DEVICE void transform(Fragment_ const& src, Fragment_& dst) { transform(src, 0, dst); }
+
+  /// Transform a fragment.
+  template <typename InputFragment_>
+  CUTLASS_DEVICE void transform(InputFragment_ const& src, int offset, Fragment_& dst) {
+    if (sizeof(typename Fragment_::Element) == 8) {
+      uint64_t const* src_ptr = reinterpret_cast<uint64_t const*>(&src[offset]);
+      uint64_t* dst_ptr = reinterpret_cast<uint64_t*>(&dst[0]);
+      for (int i = 0; i < sizeof(Fragment_) / 8; ++i) {
+        dst_ptr[i] = src_ptr[i];
+      }
+    } else {
+      uint32_t const* src_ptr = reinterpret_cast<uint32_t const*>(&src[offset]);
+      uint32_t* dst_ptr = reinterpret_cast<uint32_t*>(&dst[0]);
+      for (int i = 0; i < sizeof(Fragment_) / 4; ++i) {
+        dst_ptr[i] = src_ptr[i];
+      }
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+}  // namespace cutlass