diff options
| author | aamir <[email protected]> | 2018-07-21 19:30:40 -0700 |
|---|---|---|
| committer | aamir <[email protected]> | 2018-07-21 19:30:40 -0700 |
| commit | fcf40649feb6046fb9b1ed984fb9b19422cd5463 (patch) | |
| tree | 92b28621af353598ad3a49df70ebb596d1205609 /cutlass-example/cutlass/gemm/linear_scaling.h | |
| parent | b3ad8abea43b7d1e8887f57d6e30c5a40cf752a6 (diff) | |
adding the cutlass examples
Diffstat (limited to 'cutlass-example/cutlass/gemm/linear_scaling.h')
| -rw-r--r-- | cutlass-example/cutlass/gemm/linear_scaling.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/cutlass-example/cutlass/gemm/linear_scaling.h b/cutlass-example/cutlass/gemm/linear_scaling.h new file mode 100644 index 0000000..979c93f --- /dev/null +++ b/cutlass-example/cutlass/gemm/linear_scaling.h @@ -0,0 +1,85 @@ +/*************************************************************************************************** + * 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 Implements the BLAS linear scaling function alpha*AB + beta*C +*/ +#pragma once + +#include <cutlass/fragment_multiply_add.h> + +namespace cutlass { +namespace gemm { + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +/// Functor to compute linear combination of fragments +template <typename Scalar_, typename FragmentMultiplyAdd_ = FragmentMultiplyAdd<Scalar_> > +struct LinearScaling { + // The scalar. + typedef Scalar_ Scalar; + // The adapater. + typedef FragmentMultiplyAdd_ FragmentMultiplyAdd; + + /// The parameters. + struct Params { + /// The alpha/beta scaling params. + Scalar alpha, beta; + + /// Initialize the parameters. + template <typename GemmDesc_> + CUTLASS_HOST_DEVICE int initialize(GemmDesc_ const& desc) { + alpha = desc.alpha; + beta = desc.beta; + return 0; + } + }; + + /// Ctor. + CUTLASS_DEVICE LinearScaling(Params const& params) : alpha(params.alpha), beta(params.beta) {} + + /// Evaluate the functor. + template <typename FragmentA_, typename FragmentB_> + CUTLASS_DEVICE void evaluate(FragmentA_ const& accum, FragmentB_& output) { + FragmentMultiplyAdd mad; + mad.multiply(alpha, accum, output); + } + + /// Evaluate the functor. + template <typename FragmentA_, typename FragmentB_> + CUTLASS_DEVICE void evaluate(FragmentA_ const& accum, FragmentB_ const& old, FragmentB_& output) { + FragmentMultiplyAdd mad; + FragmentB_ tmp; + mad.multiply(beta, old, tmp); + mad.multiply_add(alpha, accum, tmp, output); + } + + /// The alpha/beta scaling factors. + Scalar alpha, beta; +}; + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +} // namespace gemm +} // namespace cutlass |
