diff options
Diffstat (limited to 'src/routines/level3/xgemm.hpp')
| -rw-r--r-- | src/routines/level3/xgemm.hpp | 57 |
1 files changed, 54 insertions, 3 deletions
diff --git a/src/routines/level3/xgemm.hpp b/src/routines/level3/xgemm.hpp index c61611b6..dab195c5 100644 --- a/src/routines/level3/xgemm.hpp +++ b/src/routines/level3/xgemm.hpp @@ -24,6 +24,57 @@ template <typename T> class Xgemm: public Routine { public: + // Defines the assumptions of the GEMM kernels + static const bool a_want_rotated_; + static const bool b_want_rotated_; + static const bool c_want_rotated_; + + // Selects which version of GEMM to run + static bool UseDirectKernel(const size_t m, const size_t n, const size_t k, + const size_t min_indirect_size) { + const auto m_n_k = static_cast<unsigned long long>(m) * static_cast<unsigned long long>(n) * + static_cast<unsigned long long>(k); + const auto min_indirect_size_ll = static_cast<unsigned long long>(min_indirect_size); + const auto min_indirect_size_e3 = min_indirect_size_ll * min_indirect_size_ll * min_indirect_size_ll; + return (m_n_k < min_indirect_size_e3); + } + + // Computes the sizes and offsets for (optional) temporary buffers for the 3 matrices + static size_t ComputeTempSize(const bool a_no_temp, const bool b_no_temp, const bool c_no_temp, + const size_t a_size, const size_t b_size, const size_t c_size, + size_t &b_temp_offset, size_t &c_temp_offset) { + auto temp_size = size_t{0}; + if (!a_no_temp) { temp_size += a_size; } + if (!b_no_temp) { b_temp_offset = temp_size; temp_size += b_size; } + if (!c_no_temp) { c_temp_offset = temp_size; temp_size += c_size; } + return temp_size; + } + + // Determines whether or not temporary matrices are needed + static bool NoTempBuffer(const size_t one, const size_t one_i, const size_t two, const size_t two_i, + const size_t ld, const size_t offset, + const bool do_transpose, const bool conjugate) { + return one == one_i && two == two_i && ld == one && offset == 0 && !do_transpose && !conjugate; + } + + + // Computes the first and second "internal" (ceiled) dimensions of the 3 matrices taking into account + // whether the matrices need to be rotated or not for the kernel. + static void CalculateInternalDimensions(const size_t m, const size_t n, const size_t k, + const size_t mwg, const size_t nwg, const size_t kwg, + size_t& a_one_i, size_t& a_two_i, size_t& b_one_i, + size_t& b_two_i, size_t& c_one_i, size_t& c_two_i) { + const auto m_ceiled = Ceil(m, mwg); + const auto n_ceiled = Ceil(n, nwg); + const auto k_ceiled = Ceil(k, kwg); + a_one_i = (a_want_rotated_) ? k_ceiled : m_ceiled; + a_two_i = (a_want_rotated_) ? m_ceiled : k_ceiled; + b_one_i = (b_want_rotated_) ? n_ceiled : k_ceiled; + b_two_i = (b_want_rotated_) ? k_ceiled : n_ceiled; + c_one_i = (c_want_rotated_) ? n_ceiled : m_ceiled; + c_two_i = (c_want_rotated_) ? m_ceiled : n_ceiled; + } + // Constructor Xgemm(Queue &queue, EventPointer event, const std::string &name = "GEMM"); @@ -45,9 +96,9 @@ class Xgemm: public Routine { const Buffer<T> &c_buffer, const size_t c_offset, const size_t c_ld, const bool a_do_transpose, const bool b_do_transpose, const bool c_do_transpose, const bool a_conjugate, const bool b_conjugate, - const size_t a_one, const size_t a_two, const bool a_want_rotated, - const size_t b_one, const size_t b_two, const bool b_want_rotated, - const size_t c_one, const size_t c_two, const bool c_want_rotated); + const size_t a_one, const size_t a_two, + const size_t b_one, const size_t b_two, + const size_t c_one, const size_t c_two); // Direct version of GEMM (no pre and post-processing kernels) void GemmDirect(const size_t m, const size_t n, const size_t k, |