mirror of
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109 lines
4.4 KiB
C++
109 lines
4.4 KiB
C++
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015-2024 Advanced Micro Devices, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <migraphx/float_equal.hpp>
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#include <migraphx/instruction_ref.hpp>
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#include <migraphx/quantize_int4.hpp>
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#include <migraphx/program.hpp>
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#include <migraphx/instruction.hpp>
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#include <migraphx/iterator_for.hpp>
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#include <migraphx/stringutils.hpp>
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#include <migraphx/ranges.hpp>
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#include <migraphx/target.hpp>
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#include <migraphx/make_op.hpp>
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namespace migraphx {
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inline namespace MIGRAPHX_INLINE_NS {
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static void int4_quantize_module(module& m)
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{
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std::vector<std::string> int4_instrs{"dot", "convolution"};
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for(auto ins : iterator_for(m))
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{
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if(not(contains(int4_instrs, ins->name())))
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continue;
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if(ins->inputs().empty())
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continue;
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auto s = ins->get_shape();
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auto mod_inputs = ins->module_inputs();
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// Convert each of the inputs that are fp32 or fp16 to int4
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auto inputs = ins->inputs();
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std::transform(inputs.begin(), inputs.end(), inputs.begin(), [&](auto inp) {
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auto sh = inp->get_shape();
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if(sh.broadcasted())
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return inp;
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auto input_type = sh.type();
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if(input_type != shape::float_type and input_type != shape::half_type)
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return inp;
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auto lens = sh.lens();
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if(lens[lens.size() - 1] % 2)
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return inp; // even sized dimensions to pack
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if(not inp->can_eval())
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return inp;
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std::vector<float> val;
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inp->eval().visit([&](auto in_data) { val.assign(in_data.begin(), in_data.end()); });
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auto [min, max] = std::minmax_element(val.begin(), val.end());
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*min = *min > 0 ? 0 : *min;
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*max = *max < 0 ? 0 : *max;
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float fscale4 = (*max - *min) / 15; // INT4 range is [0-15]
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int zp4 = float_equal(fscale4, 0) ? 0 : std::round(-*min / fscale4);
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auto scale = m.add_literal(literal({s.type()}, {fscale4}));
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scale =
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m.insert_instruction(ins, make_op("multibroadcast", {{"out_lens", lens}}), scale);
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auto zp = m.add_literal(literal{{shape::uint8_type}, {zp4}});
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zp = m.insert_instruction(ins, make_op("multibroadcast", {{"out_lens", lens}}), zp);
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auto q_in = m.insert_instruction(ins, make_op("quantizelinear"), inp, scale, zp);
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auto pk = m.insert_instruction(ins, make_op("pack_int4", {{"axis", -1}}), q_in);
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auto unpk = m.insert_instruction(ins, make_op("unpack_int4", {{"axis", -1}}), pk);
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auto dq_scale = m.add_literal(literal({s.type()}, {fscale4}));
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dq_scale = m.insert_instruction(
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ins, make_op("multibroadcast", {{"out_lens", lens}}), dq_scale);
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auto dq_zp = m.add_literal(literal{{shape::uint8_type}, {zp4}});
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dq_zp =
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m.insert_instruction(ins, make_op("multibroadcast", {{"out_lens", lens}}), dq_zp);
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return m.insert_instruction(ins, make_op("dequantizelinear"), unpk, dq_scale, dq_zp);
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});
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auto converted_ins = m.insert_instruction(ins, ins->get_operator(), inputs, mod_inputs);
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m.replace_instruction(ins, converted_ins);
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}
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}
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void quantize_int4_pass::apply(module& m) const { int4_quantize_module(m); }
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} // namespace MIGRAPHX_INLINE_NS
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} // namespace migraphx
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