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conversion-based mixed precision SpMV & BLAS
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| /*******************************<GINKGO LICENSE>****************************** | ||
| Copyright (c) 2017-2021, the Ginkgo authors | ||
| All rights reserved. | ||
| Redistribution and use in source and binary forms, with or without | ||
| modification, are permitted provided that the following conditions | ||
| are met: | ||
| 1. Redistributions of source code must retain the above copyright | ||
| notice, this list of conditions and the following disclaimer. | ||
| 2. 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. | ||
| 3. Neither the name of the copyright holder 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 THE COPYRIGHT | ||
| HOLDER OR CONTRIBUTORS 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 TORT | ||
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ******************************<GINKGO LICENSE>*******************************/ | ||
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| #ifndef GKO_CORE_BASE_PRECISION_DISPATCH_HPP_ | ||
| #define GKO_CORE_BASE_PRECISION_DISPATCH_HPP_ | ||
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| #include <ginkgo/core/matrix/dense.hpp> | ||
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| #include "core/base/temporary_conversion.hpp" | ||
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| namespace gko { | ||
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| template <typename ValueType> | ||
| detail::temporary_conversion<matrix::Dense<ValueType>> | ||
| make_temporary_conversion(LinOp *matrix) | ||
| { | ||
| auto result = | ||
| detail::temporary_conversion<matrix::Dense<ValueType>>::template create< | ||
| matrix::Dense<next_precision<ValueType>>>(matrix); | ||
| if (!result) { | ||
| GKO_NOT_SUPPORTED(matrix); | ||
| } | ||
| return result; | ||
| } | ||
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| template <typename ValueType> | ||
| detail::temporary_conversion<const matrix::Dense<ValueType>> | ||
| make_temporary_conversion(const LinOp *matrix) | ||
| { | ||
| auto result = detail::temporary_conversion<const matrix::Dense<ValueType>>:: | ||
| template create<matrix::Dense<next_precision<ValueType>>>(matrix); | ||
| if (!result) { | ||
| GKO_NOT_SUPPORTED(matrix); | ||
| } | ||
| return result; | ||
| } | ||
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| template <typename ValueType, typename Function, typename... Args> | ||
| void precision_dispatch(Function fn, Args *... linops) | ||
| { | ||
| fn(make_temporary_conversion<ValueType>(linops).get()...); | ||
| } | ||
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| template <typename ValueType, typename Function> | ||
| void precision_dispatch_spmv(Function fn, const LinOp *in, LinOp *out) | ||
| { | ||
| // do we need to convert complex Dense to real Dense? | ||
| auto complex_to_real = | ||
| !(is_complex<ValueType>() || | ||
| dynamic_cast<const ConvertibleTo<matrix::Dense<>> *>(in)); | ||
| if (complex_to_real) { | ||
| auto dense_in = make_temporary_conversion<to_complex<ValueType>>(in); | ||
| auto dense_out = make_temporary_conversion<to_complex<ValueType>>(out); | ||
| using Dense = matrix::Dense<ValueType>; | ||
| // These dynamic_casts are only needed to make the code compile | ||
| // If ValueType is complex, this branch will never be taken | ||
| // If ValueType is real, the cast is a no-op | ||
| fn(dynamic_cast<const Dense *>(dense_in->create_real_view().get()), | ||
| dynamic_cast<Dense *>(dense_out->create_real_view().get())); | ||
| } else { | ||
| precision_dispatch<ValueType>(fn, in, out); | ||
| } | ||
| } | ||
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| template <typename ValueType, typename Function> | ||
| void precision_dispatch_spmv(Function fn, const LinOp *alpha, const LinOp *in, | ||
| LinOp *out) | ||
| { | ||
| // do we need to convert complex Dense to real Dense? | ||
| auto complex_to_real = | ||
| !(is_complex<ValueType>() || | ||
| dynamic_cast<const ConvertibleTo<matrix::Dense<>> *>(in)); | ||
| if (complex_to_real) { | ||
| auto dense_in = make_temporary_conversion<to_complex<ValueType>>(in); | ||
| auto dense_out = make_temporary_conversion<to_complex<ValueType>>(out); | ||
| auto dense_alpha = make_temporary_conversion<ValueType>(alpha); | ||
| using Dense = matrix::Dense<ValueType>; | ||
| // These dynamic_casts are only needed to make the code compile | ||
| // If ValueType is complex, this branch will never be taken | ||
| // If ValueType is real, the cast is a no-op | ||
| fn(dense_alpha.get(), | ||
| dynamic_cast<const Dense *>(dense_in->create_real_view().get()), | ||
| dynamic_cast<Dense *>(dense_out->create_real_view().get())); | ||
| } else { | ||
| precision_dispatch<ValueType>(fn, alpha, in, out); | ||
| } | ||
| } | ||
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| template <typename ValueType, typename Function> | ||
| void precision_dispatch_spmv(Function fn, const LinOp *alpha, const LinOp *in, | ||
| const LinOp *beta, LinOp *out) | ||
| { | ||
| // do we need to convert complex Dense to real Dense? | ||
| auto complex_to_real = | ||
| !(is_complex<ValueType>() || | ||
| dynamic_cast<const ConvertibleTo<matrix::Dense<>> *>(in)); | ||
| if (complex_to_real) { | ||
| auto dense_in = make_temporary_conversion<to_complex<ValueType>>(in); | ||
| auto dense_out = make_temporary_conversion<to_complex<ValueType>>(out); | ||
| auto dense_alpha = make_temporary_conversion<ValueType>(alpha); | ||
| auto dense_beta = make_temporary_conversion<ValueType>(beta); | ||
| using Dense = matrix::Dense<ValueType>; | ||
| // These dynamic_casts are only needed to make the code compile | ||
| // If ValueType is complex, this branch will never be taken | ||
| // If ValueType is real, the cast is a no-op | ||
| fn(dense_alpha.get(), | ||
| dynamic_cast<const Dense *>(dense_in->create_real_view().get()), | ||
| dense_beta.get(), | ||
| dynamic_cast<Dense *>(dense_out->create_real_view().get())); | ||
| } else { | ||
| precision_dispatch<ValueType>(fn, alpha, in, beta, out); | ||
| } | ||
| } | ||
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| } // namespace gko | ||
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| #endif // GKO_CORE_BASE_PRECISION_DISPATCH_HPP_ |
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