[LLM] First commit the llm deployment code

custom_ops/gpu_ops/common/quantization.h

@@ -0,0 +1,331 @@
+/*
+ * Copyright (c) 2023, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <optional>
+#include <string>
+
+namespace common
+{
+
+class QuantMode
+{
+    // [WARNING] KEEP BELOW DEFINITION IN SYNC WITH tensorrt_llm/quantization/mode.py
+public:
+    using BaseType = std::uint32_t;
+
+    explicit constexpr QuantMode(BaseType value) noexcept
+        : mValue{value}
+    {
+    }
+
+    QuantMode() noexcept = default;
+
+    constexpr QuantMode(QuantMode const&) noexcept = default;
+
+    constexpr QuantMode& operator=(QuantMode const& other) noexcept = default;
+
+    static constexpr QuantMode none() noexcept
+    {
+        return QuantMode(BaseType(0));
+    }
+
+    static constexpr QuantMode int4Weights() noexcept
+    {
+        return QuantMode(BaseType(1u) << 0);
+    }
+
+    static constexpr QuantMode int8Weights() noexcept
+    {
+        return QuantMode(BaseType(1u) << 1);
+    }
+
+    static constexpr QuantMode activations() noexcept
+    {
+        return QuantMode(BaseType(1u) << 2);
+    }
+
+    static constexpr QuantMode perChannelScaling() noexcept
+    {
+        return QuantMode(BaseType(1u) << 3);
+    }
+
+    static constexpr QuantMode perTokenScaling() noexcept
+    {
+        return QuantMode(BaseType(1u) << 4);
+    }
+
+    static constexpr QuantMode perGroupScaling() noexcept
+    {
+        return QuantMode(BaseType(1u) << 5);
+    }
+
+    static constexpr QuantMode int8KvCache() noexcept
+    {
+        return QuantMode(BaseType(1u) << 6);
+    }
+
+    static constexpr QuantMode fp8KvCache() noexcept
+    {
+        return QuantMode(BaseType(1u) << 7);
+    }
+
+    static constexpr QuantMode fp8Qdq() noexcept
+    {
+        return QuantMode(BaseType(1u) << 8);
+    }
+
+    static constexpr QuantMode fp8RowWise() noexcept
+    {
+        return QuantMode(BaseType(1u) << 3 | BaseType(1u) << 4 | BaseType(1u) << 9);
+    }
+
+    constexpr BaseType value() const noexcept
+    {
+        return mValue;
+    }
+
+    constexpr bool isSet(QuantMode const& mode) const noexcept
+    {
+        return (mValue & mode.value()) == mode.value();
+    }
+
+    constexpr bool hasInt4Weights() const noexcept
+    {
+        return isSet(int4Weights());
+    }
+
+    constexpr bool hasInt8Weights() const noexcept
+    {
+        return isSet(int8Weights());
+    }
+
+    constexpr bool hasActivations() const noexcept
+    {
+        return isSet(activations());
+    }
+
+    constexpr bool hasPerChannelScaling() const noexcept
+    {
+        return isSet(perChannelScaling());
+    }
+
+    constexpr bool hasPerTokenScaling() const noexcept
+    {
+        return isSet(perTokenScaling());
+    }
+
+    constexpr bool hasPerGroupScaling() const noexcept
+    {
+        return isSet(perGroupScaling());
+    }
+
+    constexpr bool hasStaticActivationScaling() const noexcept
+    {
+        return !hasPerTokenScaling();
+    }
+
+    constexpr bool hasInt8KvCache() const noexcept
+    {
+        return isSet(int8KvCache());
+    }
+
+    constexpr bool hasFp8KvCache() const noexcept
+    {
+        return isSet(fp8KvCache());
+    }
+
+    constexpr bool hasFp8Qdq() const noexcept
+    {
+        return isSet(fp8Qdq());
+    }
+
+    constexpr bool hasFp8RowWise() const noexcept
+    {
+        return isSet(fp8RowWise());
+    }
+
+    constexpr bool hasKvCacheQuant() const noexcept
+    {
+        return hasInt8KvCache() || hasFp8KvCache();
+    }
+
+    static constexpr QuantMode fromDescription(bool quantizeWeights = false, bool quantizeActivations = false,
+        bool perToken = false, bool perChannel = false, bool perGroup = false, bool useInt4Weights = false,
+        bool useInt8KvCache = false, bool useFp8KvCache = false, bool useFp8Qdq = false, bool useFp8RowWise = false)
+    {
+        QuantMode quantMode{};
+        if (quantizeWeights)
+        {
+            if (useInt4Weights)
+                quantMode += int4Weights();
+            else
+                quantMode += int8Weights();
+        }
+
+        if (quantizeActivations)
+        {
+            quantMode += activations();
+        }
+
+        if (perChannel)
+        {
+            quantMode += QuantMode::perChannelScaling();
+        }
+        if (perToken)
+        {
+            quantMode += QuantMode::perTokenScaling();
+        }
+        if (perGroup)
+        {
+            quantMode += QuantMode::perGroupScaling();
+        }
+
+        if (useInt8KvCache)
+        {
+            quantMode += int8KvCache();
+        }
+
+        if (useFp8KvCache)
+        {
+            quantMode += fp8KvCache();
+        }
+
+        if (useFp8Qdq)
+        {
+            quantMode += fp8Qdq();
+        }
+
+        if (useFp8RowWise)
+        {
+            quantMode += fp8RowWise();
+        }
+
+        return quantMode;
+    }
+
+    static constexpr QuantMode useSmoothQuant(bool perToken = false, bool perChannel = false)
+    {
+        return fromDescription(true, true, perToken, perChannel);
+    }
+
+    static constexpr QuantMode useWeightOnly(bool useInt4Weights = false, bool perGroup = false)
+    {
+        return fromDescription(true, false, false, false, perGroup, useInt4Weights);
+    }
+
+    static const QuantMode fromQuantAlgo(
+        std::optional<std::string> quantAlgo = std::nullopt, std::optional<std::string> kvCacheQuantAlgo = std::nullopt)
+    {
+        QuantMode quantMode{};
+        if (quantAlgo == "W8A16")
+        {
+            quantMode = useWeightOnly(false, false);
+        }
+        else if (quantAlgo == "W4A16")
+        {
+            quantMode = useWeightOnly(true, false);
+        }
+        else if (quantAlgo == "W4A16_AWQ")
+        {
+            quantMode = useWeightOnly(true, true);
+        }
+        else if (quantAlgo == "W4A8_AWQ")
+        {
+            quantMode = useWeightOnly(true, true);
+        }
+        else if (quantAlgo == "W4A16_GPTQ")
+        {
+            quantMode = useWeightOnly(true, true);
+        }
+        else if (quantAlgo == "W8A8_SQ_PER_CHANNEL")
+        {
+            quantMode = useSmoothQuant(false, true);
+        }
+        else if (quantAlgo == "W8A8_SQ_PER_TENSOR_PLUGIN")
+        {
+            quantMode = useSmoothQuant(false, false);
+        }
+        else if (quantAlgo == "W8A8_SQ_PER_CHANNEL_PER_TOKEN_PLUGIN")
+        {
+            quantMode = useSmoothQuant(true, true);
+        }
+        else if (quantAlgo == "W8A8_SQ_PER_CHANNEL_PER_TENSOR_PLUGIN")
+        {
+            quantMode = useSmoothQuant(false, true);
+        }
+        else if (quantAlgo == "W8A8_SQ_PER_TENSOR_PER_TOKEN_PLUGIN")
+        {
+            quantMode = useSmoothQuant(true, false);
+        }
+        else if (quantAlgo == "FP8")
+        {
+            quantMode = fromDescription(false, false, false, false, false, false, false, false, true);
+        }
+        else if (quantAlgo == "FP8_ROWWISE")
+        {
+            quantMode = fromDescription(false, false, true, true, false, false, false, false, false, true);
+        }
+
+        if (kvCacheQuantAlgo == "INT8")
+        {
+            quantMode += int8KvCache();
+        }
+        else if (kvCacheQuantAlgo == "FP8")
+        {
+            quantMode += fp8KvCache();
+        }
+
+        return quantMode;
+    }
+
+    constexpr QuantMode operator+(QuantMode const& other) const noexcept
+    {
+        return QuantMode(mValue | other.mValue);
+    }
+
+    constexpr QuantMode& operator+=(QuantMode const& other) noexcept
+    {
+        return *this = *this + other;
+    }
+
+    constexpr QuantMode operator-(QuantMode const& other) const noexcept
+    {
+        return QuantMode(mValue & ~other.mValue);
+    }
+
+    constexpr QuantMode& operator-=(QuantMode const& other) noexcept
+    {
+        return *this = *this - other;
+    }
+
+    constexpr bool operator==(QuantMode const& other) const noexcept
+    {
+        return mValue == other.mValue;
+    }
+
+    constexpr bool operator!=(QuantMode const& other) const noexcept
+    {
+        return !(*this == other);
+    }
+
+private:
+    BaseType mValue{0};
+};
+
+} // namespace common