diff options
Diffstat (limited to 'src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp')
-rw-r--r-- | src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp | 153 |
1 files changed, 95 insertions, 58 deletions
diff --git a/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp b/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp index 6734e3cce0..bf80784b79 100644 --- a/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp +++ b/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2018 ARM Limited. + * Copyright (c) 2018-2019 ARM Limited. * * SPDX-License-Identifier: MIT * @@ -22,56 +22,53 @@ * SOFTWARE. */ -#include "gemv_batched.hpp" +#include <arm_gemm.hpp> -namespace arm_gemm { - -template<typename Top, typename Tret> -class GemmImplementation { -public: - /* Is this implementation compatible with the args as provided? */ - virtual bool is_supported(const GemmArgs<Tret> &args) { return true; } - /* Is this implementation "recommended" for these args (heuristic)? */ - virtual bool is_recommended(const GemmArgs<Tret> &args) { return true; } - /* Instantiate this method please. */ - virtual UniqueGemmCommon<Top, Tret> instantiate(const GemmArgs<Tret> &args) = 0; +#include <functional> - /* Indicate the "GemmMethod" for use as a selector */ - const GemmMethod method; - - virtual ~GemmImplementation() { } - - GemmImplementation(GemmMethod method) : method(method) { } -}; +namespace arm_gemm { -/* "gemv_batched" implementation is type-agnostic, so template it here. */ template<typename Top, typename Tret> -class GemmImpl_gemv_batched : public GemmImplementation<Top, Tret> { -public: - bool is_supported(const GemmArgs<Tret> &args) override { - return (args._Msize==1 && args._nbatches > 1); - } - - UniqueGemmCommon<Top, Tret> instantiate(const GemmArgs<Tret> &args) override { - return UniqueGemmCommon<Top, Tret> (new GemvBatched<Top, Tret>(args)); - } - - GemmImpl_gemv_batched() : GemmImplementation<Top, Tret>(GemmMethod::GEMV_BATCHED) { } +struct GemmImplementation { + const GemmMethod method; + const char * name; + std::function<bool(const GemmArgs<Tret> &)> is_supported; + std::function<bool(const GemmArgs<Tret> &)> is_recommended; + std::function<GemmCommon<Top, Tret> *(const GemmArgs<Tret> &)> instantiate; }; /* "Master" function implemented for each valid combination of types. * Returns a list of GEMM implementation descriptors for processing by the - * other functions. */ + * other functions, terminated by an implementation with + * method==GemmMethod::DEFAULT. */ template<typename Top, typename Tret> -std::vector<GemmImplementation<Top, Tret> *> &gemm_implementation_list(); +const GemmImplementation<Top, Tret> *gemm_implementation_list(); +/* + * Select a GEMM implementation for the given arguments. + * + * The logic here returns the first method on the list which supports the + * requested problem parameters, matches the provided filters (method and/or + * name string match) and recommends itself. + * + * If there is no such method, it will return the first method which + * supports the requested parameters and passes the filters, regardless of + * recommendation. + * + * If no method supports the requested parameters and passes the filters, + * this function returns false and doesn't touch the provided pointer + * reference. + */ template<typename Top, typename Tret> -GemmImplementation<Top, Tret> *find_implementation(GemmArgs<Tret> &args, GemmConfig *cfg) { +bool find_implementation(const GemmArgs<Tret> &args, const GemmImplementation<Top, Tret> * &impl) { auto gemms = gemm_implementation_list<Top, Tret>(); + const GemmConfig *cfg = args._cfg; - for(auto &&i : gemms) { + const GemmImplementation<Top, Tret> *saved_impl = nullptr; + + for (auto i = gemms; i->method != GemmMethod::DEFAULT; i++) { /* Skip if this implementation doesn't support these args. */ - if (!i->is_supported(args)) { + if (i->is_supported != nullptr && !i->is_supported(args)) { continue; } @@ -80,52 +77,92 @@ GemmImplementation<Top, Tret> *find_implementation(GemmArgs<Tret> &args, GemmCon continue; } - /* If no specific method is requested, check that this method recommends itself. */ - if ((!cfg || cfg->method == GemmMethod::DEFAULT) && !i->is_recommended(args)) { + /* Skip if a filter is to be applied and it doesn't match. */ + if (cfg && cfg->filter != "" && !strstr(i->name, cfg->filter.c_str())) { + continue; + } + + /* At this point, if we don't have a saved implementation, save this + * one. This is so that we always return something if a filter + * matches, even if it doesn't recommend itself. + */ + if (saved_impl == nullptr) { + saved_impl=i; + } + + /* Check that this method recommends itself. */ + if (i->is_recommended != nullptr && !i->is_recommended(args)) { + continue; + } + + impl=i; + + return true; + } + + /* We didn't find an option matching the filters that recommended + * itself. But if we found something earlier that matched the filters + * but wasn't recommended, return it here. */ + if (saved_impl != nullptr) { + impl = saved_impl; + return true; + } + + return false; +} + +template<typename Top, typename Tret> +std::vector<std::string> get_compatible_kernels(const GemmArgs<Tret> &args) { + std::vector<std::string> res; + + auto gemms = gemm_implementation_list<Top, Tret>(); + + for (auto i = gemms; i->method != GemmMethod::DEFAULT; i++) { + /* Check that this implementation supports the presented problem. */ + if (i->is_supported != nullptr && !i->is_supported(args)) { continue; } - return i; + res.push_back(i->name); } - return nullptr; + return res; } template<typename Top, typename Tret> -UniqueGemmCommon<Top, Tret> gemm(GemmArgs<Tret> &args, GemmConfig *cfg) { - auto impl = find_implementation<Top, Tret>(args, cfg); +UniqueGemmCommon<Top, Tret> gemm(const GemmArgs<Tret> &args) { + const GemmImplementation<Top, Tret> *impl; - if (impl) { - return impl->instantiate(args); + if (find_implementation<Top, Tret>(args, impl)) { + return UniqueGemmCommon<Top, Tret>(impl->instantiate(args)); } return UniqueGemmCommon<Top, Tret>(nullptr); } template<typename Top, typename Tret> -GemmMethod get_gemm_method(GemmArgs<Tret> &args) { - auto impl = find_implementation<Top, Tret>(args, nullptr); +KernelDescription get_gemm_method(const GemmArgs<Tret> &args) { + const GemmImplementation<Top, Tret> *impl; - if (impl) { - return impl->method; + if (find_implementation<Top, Tret>(args, impl)) { + return KernelDescription(impl->method, impl->name); } /* This shouldn't happen - there should always be at least one valid implementation. */ - return GemmMethod::DEFAULT; + return KernelDescription(); } template<typename Top, typename Tret> -bool method_is_compatible(GemmMethod method, GemmArgs<Tret> &args) { +bool method_is_compatible(GemmMethod method, const GemmArgs<Tret> &args) { /* Determine if the method is valid by attempting to obtain an implementation specifying this method. */ - GemmConfig cfg(method); + GemmConfig cfg(method); + GemmArgs<Tret> myargs = args; - auto impl = find_implementation<Top, Tret>(args, &cfg); + myargs._cfg = &cfg; - if (impl) { - return true; - } + const GemmImplementation<Top, Tret> *impl; - return false; + return find_implementation<Top, Tret>(myargs, impl); } -} // namespace arm_gemm +} // namespace arm_gemm
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