mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
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348 lines
19 KiB
C++
348 lines
19 KiB
C++
/*
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* Copyright (c) 2022-2024, NVIDIA CORPORATION. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "tensorrt_llm/kernels/trtllmGenKernels/blockScaleMoe/runner.h"
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#include "tensorrt_llm/runtime/torchUtils.h"
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#include "tensorrt_llm/thop/thUtils.h"
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#include <ATen/cuda/EmptyTensor.h>
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TRTLLM_NAMESPACE_BEGIN
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namespace torch_ext
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{
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namespace btg = batchedGemm::trtllm::gen;
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using tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::Routing::RoutingMethodType;
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torch::Tensor fp8_per_tensor_scale_moe_runner(torch::optional<torch::Tensor> const& routing_logits,
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torch::optional<torch::Tensor> const& routing_bias, torch::Tensor const& hidden_states,
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torch::Tensor const& gemm1_weights, torch::Tensor const& output1_scales_scalar,
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torch::Tensor const& output1_scales_gate_scalar, torch::Tensor const& gemm2_weights,
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torch::Tensor const& output2_scales_scalar, int64_t const num_experts, int64_t const top_k,
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std::optional<int64_t> const n_group, std::optional<int64_t> const topk_group, int64_t const intermediate_size,
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int64_t const local_expert_offset, int64_t const local_num_experts,
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std::optional<double> const routed_scaling_factor, bool const use_routing_scales_on_input,
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int64_t const tile_tokens_dim, int64_t const routing_method_type,
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torch::optional<torch::Tensor> const& topk_weights, torch::optional<torch::Tensor> const& topk_ids)
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{
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TORCH_CHECK(tensorrt_llm::common::isSM100Family(), "Only SM100f is supported by FP8 block scale MOE");
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TORCH_CHECK(tile_tokens_dim == 8 || tile_tokens_dim == 16 || tile_tokens_dim == 32 || tile_tokens_dim == 64
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|| tile_tokens_dim == 128 || tile_tokens_dim == 192 || tile_tokens_dim == 256,
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"tile_tokens_dim must be 8, 16, 32, 64, 128, 256");
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if (topk_ids.has_value() && topk_weights.has_value())
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{
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TORCH_CHECK(topk_ids.value().scalar_type() == at::ScalarType::Int, "topk_ids must be int");
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TORCH_CHECK(topk_weights.value().scalar_type() == at::ScalarType::BFloat16, "topk_weights must be bfloat16.");
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TORCH_CHECK(topk_ids.value().dim() == 2, "topk_ids must be 2D.");
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TORCH_CHECK(topk_ids.value().sizes()[0] == hidden_states.sizes()[0],
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"topk_ids and hidden_states must have the same number of tokens.");
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TORCH_CHECK(topk_ids.value().sizes()[1] == top_k, "topk_ids dim1 must match top_k.");
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TORCH_CHECK(topk_weights.value().dim() == 2, "topk_weights must be 2D.");
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TORCH_CHECK(topk_weights.value().sizes()[0] == hidden_states.sizes()[0],
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"topk_weights and hidden_states must have the same number of tokens.");
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TORCH_CHECK(topk_weights.value().sizes()[1] == top_k, "topk_weights dim1 must match top_k.");
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}
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else if (routing_logits.has_value())
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{
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if (use_routing_scales_on_input)
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{
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TORCH_CHECK(
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routing_logits.value().scalar_type() == at::ScalarType::BFloat16, "routing_logits must be bfloat16.");
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}
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else
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{
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if (static_cast<RoutingMethodType>(routing_method_type) == RoutingMethodType::DeepSeekV3)
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{
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TORCH_CHECK(
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routing_logits.value().scalar_type() == at::ScalarType::Float, "routing_logits must be float");
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}
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else
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{
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TORCH_CHECK(routing_logits.value().scalar_type() == at::ScalarType::BFloat16,
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"routing_logits must be bfloat16");
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}
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}
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TORCH_CHECK(routing_logits.value().dim() == 2, "routing_logits must be 2D.");
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TORCH_CHECK(routing_logits.value().sizes()[1] == num_experts, "routing_logits has incorrect shape.");
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}
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else
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{
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TORCH_CHECK(false, "routing_logits or (topk_ids and topk_weights) must be provided.");
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}
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if (topk_ids.has_value() && topk_weights.has_value() && routing_logits.has_value())
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{
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TLLM_LOG_WARNING(
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"When logits and (topk_ids and topk_weights) are both provided, we only use (topk_ids and topk_weights).");
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}
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if (topk_ids.has_value())
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{
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TORCH_CHECK(topk_ids.value().sizes()[0] == hidden_states.sizes()[0],
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"topk_ids and hidden_states must have the same number of tokens.");
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}
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else
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{
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TORCH_CHECK(routing_logits.value().sizes()[0] == hidden_states.sizes()[0],
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"routing_logits and hidden_states must have the same number of tokens.");
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}
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if (routing_bias.has_value())
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{
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TORCH_CHECK(routing_bias.value().scalar_type() == at::ScalarType::BFloat16, "routing_bias must be bfloat16.");
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TORCH_CHECK(routing_bias.value().dim() == 1, "routing_bias must be 1D.");
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TORCH_CHECK(routing_bias.value().sizes()[0] == num_experts, "routing_bias has incorrect shape.");
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}
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if (n_group.has_value() && n_group.value() > 1)
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{
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TORCH_CHECK(static_cast<RoutingMethodType>(routing_method_type) == RoutingMethodType::DeepSeekV3,
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"Routing kernel with groups implies DeepSeekV3 routing method.");
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TORCH_CHECK(topk_group.has_value(), "if n_group is given, topk_group must be given");
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TORCH_CHECK(num_experts % n_group.value() == 0, "num_experts must be divisible by n_group");
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TORCH_CHECK(top_k <= 8 && top_k > 0, "Current routing kernel (with groups) only supports top_k<=8 && top_k>0.");
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TORCH_CHECK(topk_group.value() <= 4 && topk_group.value() > 0,
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"Current routing kernel only (with groups) supports topk_group<=4 && topk_group > 0.");
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TORCH_CHECK(topk_group.value() <= n_group.value(), "n_group must not be smaller than topk_group.");
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// This check ensures we have enough experts in the selected groups to handle the top_k routing
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TORCH_CHECK(top_k < (topk_group.value() * num_experts / n_group.value()),
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"top_k must be less than total number of experts in selected groups");
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}
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else if (static_cast<RoutingMethodType>(routing_method_type) == RoutingMethodType::Llama4)
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{
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TORCH_CHECK(top_k == 1, "Current routing kernel (no groups, Llama4) only supports top_k=1.");
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}
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TORCH_CHECK(num_experts % 4 == 0, "Routing kernel expects that num_experts must be divisible by 4");
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TORCH_CHECK(num_experts > top_k, "num_experts must be greater than top_k");
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// If both routing inputs are provided, they must be on the same device
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if (routing_logits.has_value() && topk_ids.has_value())
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{
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TORCH_CHECK(
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routing_logits->device() == topk_ids->device(), "routing_logits and topk_ids must be on the same device");
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}
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tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::MoE::MoERunnerArgs args;
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tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::MoE::MoEWorkspace workspace;
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// setup args
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args.mDtypeElt = btg::Dtype::E4m3;
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args.routing_logits = routing_logits.has_value() ? routing_logits.value().data_ptr() : nullptr;
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args.routing_bias = routing_bias.has_value() ? routing_bias.value().data_ptr() : nullptr;
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args.topk_weights = topk_weights.has_value() ? topk_weights.value().data_ptr() : nullptr;
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args.topk_ids = topk_ids.has_value() ? static_cast<int32_t*>(topk_ids.value().data_ptr()) : nullptr;
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args.hidden_states = hidden_states.data_ptr();
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args.gemm1_weights = gemm1_weights.data_ptr();
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args.output1_scales_scalar = output1_scales_scalar.data_ptr<float>();
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args.output1_scales_gate_scalar = output1_scales_gate_scalar.data_ptr<float>();
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args.gemm2_weights = gemm2_weights.data_ptr();
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args.output2_scales_scalar = output2_scales_scalar.data_ptr<float>();
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args.num_tokens = hidden_states.sizes()[0];
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args.num_experts = num_experts;
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args.hidden_size = hidden_states.sizes()[1];
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args.top_k = top_k;
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args.n_group = n_group.value_or(0);
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args.topk_group = topk_group.value_or(0);
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args.local_expert_offset = local_expert_offset;
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args.local_num_experts = local_num_experts;
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args.routed_scaling_factor = routed_scaling_factor.value_or(1.0);
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args.intermediate_size = intermediate_size;
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args.mUseRoutingScalesOnInput = use_routing_scales_on_input;
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// allocate workspace for routing kernel
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if (routing_logits.has_value() && topk_ids.has_value())
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{
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TORCH_CHECK(routing_logits.value().device() == topk_ids.value().device(),
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"routing_logits and topk_ids must be on the same device");
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}
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auto routing_device = routing_logits.has_value() ? routing_logits.value().device() : topk_ids.value().device();
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at::Tensor num_tokens_per_expert
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= at::detail::empty_cuda({num_experts}, at::ScalarType::Int, routing_device, std::nullopt);
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int32_t max_num_padded_tokens
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= tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::Routing::getMaxPermutedPaddedCount(
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args.num_tokens, top_k, num_experts, tile_tokens_dim);
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int32_t max_num_padded_tokens_gemm1
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= tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::Routing::maybeGetMinTokenCount(
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max_num_padded_tokens, args.intermediate_size, btg::dtypeGetNumBits(args.mDtypeElt));
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int32_t max_num_padded_tokens_gemm2
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= tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::Routing::maybeGetMinTokenCount(
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max_num_padded_tokens, args.hidden_size, btg::dtypeGetNumBits(args.mDtypeOut));
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at::Tensor total_num_padded_tokens
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= at::empty({}, at::TensorOptions().device(routing_device).dtype(at::ScalarType::Int));
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at::Tensor expanded_idx_to_permuted_idx
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= at::detail::empty_cuda({args.num_tokens * args.top_k}, at::ScalarType::Int, routing_device, std::nullopt);
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at::Tensor permuted_idx_to_token_idx
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= at::detail::empty_cuda({max_num_padded_tokens}, at::ScalarType::Int, routing_device, std::nullopt);
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at::Tensor expert_weights
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= at::detail::empty_cuda({args.num_tokens, args.top_k}, at::ScalarType::BFloat16, routing_device, std::nullopt);
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at::Tensor expert_indexes
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= at::detail::empty_cuda({args.num_tokens, args.top_k}, at::ScalarType::Int, routing_device, std::nullopt);
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int64_t const size_of_expert_count_histogram = std::max(num_experts * 2, int64_t(256 * 2));
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at::Tensor expert_count_histogram
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= at::detail::empty_cuda({size_of_expert_count_histogram}, at::ScalarType::Int, routing_device, std::nullopt);
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// allocate workspace for activation/gemm/finalize kernels
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at::Tensor gemm1_output = at::detail::empty_cuda({max_num_padded_tokens_gemm1, 2 * intermediate_size},
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at::ScalarType::Float8_e4m3fn, routing_device, std::nullopt);
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at::Tensor gemm1_output_scale = at::detail::empty_cuda({2 * intermediate_size / 128, max_num_padded_tokens_gemm1},
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at::ScalarType::Float, routing_device, std::nullopt);
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at::Tensor activation_output = at::detail::empty_cuda(
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{max_num_padded_tokens_gemm2, intermediate_size}, at::ScalarType::Float8_e4m3fn, routing_device, std::nullopt);
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at::Tensor activation_output_scale = at::detail::empty_cuda(
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{intermediate_size / 128, max_num_padded_tokens_gemm2}, at::ScalarType::Float, routing_device, std::nullopt);
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at::Tensor gemm2_output = at::detail::empty_cuda(
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{max_num_padded_tokens_gemm2, args.hidden_size}, at::ScalarType::BFloat16, routing_device, std::nullopt);
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int32_t max_num_ctas = tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::Routing::getMaxNumCtasInBatchDim(
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args.num_tokens, args.top_k, args.num_experts, tile_tokens_dim);
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at::Tensor cta_idx_xy_to_batch_idx
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= at::detail::empty_cuda({max_num_ctas}, at::ScalarType::Int, routing_device, std::nullopt);
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at::Tensor cta_idx_xy_to_mn_limit
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= at::detail::empty_cuda({max_num_ctas}, at::ScalarType::Int, routing_device, std::nullopt);
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at::Tensor num_non_exiting_ctas
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= at::empty({}, at::TensorOptions().device(routing_device).dtype(at::ScalarType::Int));
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// Set the optional pointer to the expert weights and expert ids
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void* expert_weights_ptr = args.topk_weights ? args.topk_weights : expert_weights.data_ptr();
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tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::Routing::Runner routing_runner(tile_tokens_dim);
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auto const& stream = at::cuda::getCurrentCUDAStream(
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routing_logits.has_value() ? routing_logits.value().get_device() : topk_ids.value().get_device());
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routing_runner.run(args.routing_logits, args.routing_bias, args.num_tokens, args.num_experts, args.top_k,
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args.n_group, args.topk_group, args.local_expert_offset, args.local_num_experts, args.routed_scaling_factor,
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expert_indexes.data_ptr<int>(), expert_count_histogram.data_ptr<int>(), total_num_padded_tokens.data_ptr<int>(),
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expanded_idx_to_permuted_idx.data_ptr<int>(), nullptr /*permuted_idx_to_expanded_idx.data_ptr<int>()*/,
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permuted_idx_to_token_idx.data_ptr<int>(), expert_weights_ptr, args.topk_ids,
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num_tokens_per_expert.data_ptr<int>(), cta_idx_xy_to_batch_idx.data_ptr<int>(),
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cta_idx_xy_to_mn_limit.data_ptr<int>(), num_non_exiting_ctas.data_ptr<int>(), args.mDtypeElt,
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use_routing_scales_on_input, false /* use_deep_seek_fp8 */, static_cast<RoutingMethodType>(routing_method_type),
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stream);
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// MoE kernel except routing
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TORCH_CHECK(hidden_states.scalar_type() == at::ScalarType::Float8_e4m3fn, "hidden_states must be fp8.");
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TORCH_CHECK(gemm1_weights.scalar_type() == at::ScalarType::Float8_e4m3fn, "gemm1_weights must be fp8.");
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TORCH_CHECK(gemm1_weights.dim() == 3, "gemm1_weights must be 3D.");
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TORCH_CHECK(gemm1_weights.sizes()[1] % 2 == 0, "the second dimension of weights must be even.");
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TORCH_CHECK(intermediate_size == gemm1_weights.sizes()[1] / 2, "intermediate_size has incorrect shape.");
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TORCH_CHECK(gemm1_weights.sizes()[2] == hidden_states.sizes()[1],
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"the third dimension of weights must be equal to hidden_size.");
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TORCH_CHECK(intermediate_size % 128 == 0, "the second dimension of weights must be a multiple of 128.");
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TORCH_CHECK(output1_scales_scalar.scalar_type() == at::ScalarType::Float, "output1_scales_scalar must be float.");
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TORCH_CHECK(output1_scales_scalar.dim() == 1, "output1_scales_scalar must be 1D.");
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TORCH_CHECK(output1_scales_scalar.sizes()[0] == local_num_experts, "output1_scales_scalar has incorrect dim 0.");
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TORCH_CHECK(
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output1_scales_gate_scalar.scalar_type() == at::ScalarType::Float, "output1_scales_gate_scalar must be float.");
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TORCH_CHECK(output1_scales_gate_scalar.dim() == 1, "output1_scales_gate_scalar must be 1D.");
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TORCH_CHECK(
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output1_scales_gate_scalar.sizes()[0] == local_num_experts, "output1_scales_gate_scalar has incorrect dim 0.");
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TORCH_CHECK(gemm2_weights.scalar_type() == at::ScalarType::Float8_e4m3fn, "gemm2_weights must be fp8.");
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TORCH_CHECK(gemm2_weights.dim() == 3, "gemm2_weights must be 3D.");
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TORCH_CHECK(gemm2_weights.sizes()[2] == intermediate_size,
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"the third dimension of weights must be equal to intermediate_size.");
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TORCH_CHECK(output2_scales_scalar.scalar_type() == at::ScalarType::Float, "output2_scales_scalar must be float.");
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TORCH_CHECK(output2_scales_scalar.dim() == 1, "output2_scales_scalar must be 1D.");
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TORCH_CHECK(output2_scales_scalar.sizes()[0] == local_num_experts, "output2_scales_scalar has incorrect dim 0.");
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// allocate output
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at::Tensor output = at::detail::empty_cuda(
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{args.num_tokens, args.hidden_size}, at::ScalarType::BFloat16, hidden_states.device(), std::nullopt);
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// setup workspace
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workspace.total_num_padded_tokens = total_num_padded_tokens.data_ptr<int>();
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workspace.total_max_padded_tokens = max_num_padded_tokens;
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workspace.ProjUpTileN = tile_tokens_dim;
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workspace.routing_expert_indexes = expert_indexes.data_ptr<int>();
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workspace.permuted_idx_size = total_num_padded_tokens.data_ptr<int>();
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workspace.expanded_idx_to_permuted_idx
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= expanded_idx_to_permuted_idx.data_ptr<int>(); // Needed by activation/finalize kernels
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workspace.permuted_idx_to_token_idx = permuted_idx_to_token_idx.data_ptr<int>(); // Needed by permuteGemm1 kernel
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workspace.expert_weights = expert_weights_ptr; // Consumed by finalize kernel
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workspace.cta_idx_xy_to_batch_idx = cta_idx_xy_to_batch_idx.data_ptr<int>();
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workspace.cta_idx_xy_to_mn_limit = cta_idx_xy_to_mn_limit.data_ptr<int>();
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workspace.num_non_exiting_ctas = num_non_exiting_ctas.data_ptr<int>();
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// gemm1 intermediate ws
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workspace.gemm1_output = gemm1_output.data_ptr();
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workspace.gemm1_output_scale = gemm1_output_scale.data_ptr<float>();
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// activation intermediate ws
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workspace.activation_output = activation_output.data_ptr();
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workspace.activation_output_scale = activation_output_scale.data_ptr<float>();
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// gemm2 intermediate ws
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workspace.gemm2_output = gemm2_output.data_ptr();
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workspace.gemm2_output_scale = nullptr;
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args.output = output.data_ptr();
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args.output_scale = nullptr;
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tensorrt_llm::kernels::trtllmGenFp8BlockScaleMoe::MoE::Runner moe_runner(
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args.mDtypeElt, args.mUseDeepSeekFp8, tile_tokens_dim);
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auto const moeConfigIndex = moe_runner.getDefaultValidConfigIndex(
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args.top_k, args.hidden_size, args.intermediate_size, args.local_num_experts, args.num_tokens);
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auto workspace_sizes = moe_runner.getWorkspaceSizeInBytes(args, moeConfigIndex);
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at::Tensor workspace_fc1 = at::detail::empty_cuda(
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{std::get<0>(workspace_sizes)}, at::ScalarType::Char, hidden_states.device(), std::nullopt);
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at::Tensor workspace_fc2 = at::detail::empty_cuda(
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{std::get<1>(workspace_sizes)}, at::ScalarType::Char, hidden_states.device(), std::nullopt);
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workspace.bmm1_workspace = workspace_fc1.data_ptr();
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workspace.bmm2_workspace = workspace_fc2.data_ptr();
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auto const& moe_stream = at::cuda::getCurrentCUDAStream(hidden_states.get_device());
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moe_runner.run(args, workspace, hidden_states.get_device(), moe_stream, moeConfigIndex);
|
|
return output;
|
|
}
|
|
} // namespace torch_ext
|
|
|
|
TRTLLM_NAMESPACE_END
|
|
|
|
TORCH_LIBRARY_FRAGMENT(trtllm, m)
|
|
{
|
|
m.def(
|
|
"fp8_per_tensor_scale_moe_runner("
|
|
"Tensor? routing_logits,"
|
|
"Tensor? routing_bias,"
|
|
"Tensor hidden_states,"
|
|
"Tensor gemm1_weights,"
|
|
"Tensor output1_scales_scalar,"
|
|
"Tensor output1_scales_gate_scalar,"
|
|
"Tensor gemm2_weights,"
|
|
"Tensor output2_scales_scalar,"
|
|
"int num_experts,"
|
|
"int top_k,"
|
|
"int? n_group,"
|
|
"int? topk_group,"
|
|
"int intermediate_size,"
|
|
"int local_expert_offset,"
|
|
"int local_num_experts,"
|
|
"float? routed_scaling_factor,"
|
|
"bool use_routing_scales_on_input,"
|
|
"int tile_tokens_dim,"
|
|
"int routing_method_type,"
|
|
"Tensor? topk_weights,"
|
|
"Tensor? topk_ids) -> Tensor");
|
|
}
|
|
|
|
TORCH_LIBRARY_IMPL(trtllm, CUDA, m)
|
|
{
|
|
m.impl("fp8_per_tensor_scale_moe_runner", &tensorrt_llm::torch_ext::fp8_per_tensor_scale_moe_runner);
|
|
}
|