1 files changed, 58 insertions, 0 deletions
diff --git a/cutlass-example/cutlass/reshape_tile.h b/cutlass-example/cutlass/reshape_tile.h
new file mode 100644
index 0000000..55aebfc
--- /dev/null
+++ b/cutlass-example/cutlass/reshape_tile.h
@@ -0,0 +1,58 @@
+/***************************************************************************************************
+ * 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 a type for restructuring a tile.
+*/
+#pragma once
+
+#include <cutlass/shape.h>
+
+namespace cutlass {
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+// The following functor reshapes a tile of data. The goal is to have at least kAccessSize in
+// the inner-most dimension. If the user respects that constraint, there is nothing to be done. If
+// that's not the case, this functor will correct that and "extract" the right number of elements
+// from the next dimension.
+
+template <typename Tile_, int kAccessSize_, bool = (Tile_::kC < kAccessSize_)>
+struct ReshapeTile {
+  typedef Tile_ Tile;
+};
+
+template <typename Tile_, int kAccessSize_>
+struct ReshapeTile<Tile_, kAccessSize_, true> {
+  // Make sure the W dimension of the tile is large enough.
+  static_assert(Tile_::kW >= kAccessSize_, "The W dimension is too small");
+  // Make sure the dimension can be divided by the number of scalars.
+  static_assert(Tile_::kW % kAccessSize_ == 0, "Not supported");
+  // Collapse the W dimension.
+  typedef Shape<Tile_::kD, Tile_::kH, Tile_::kW / kAccessSize_, kAccessSize_> Tile;
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+}  // namespace cutlass