ea82b00e54
Sources (Apache 2.0, cloned 2026-08-09): - Deep-Spark/xllm: Iluvatar's official C++ inference engine - Deep-Spark/vllm: Iluvatar's vllm fork Key files for our EX Engine development: MoE topk_softmax (fixes 2304 calls/token PyTorch fallback): - xllm/kernels/cuda/moe/moe_topk_softmax_kernels.cuh CUB-based fused softmax+topk, power-of-2 expert count optimized For 64 experts: topk_gating_softmax<T,VPT=2,64,WARPS=4,BYTES=4> - xllm/kernels/ilu/ixformer.h Official ixformer C++ API: topk_softmax(), paged_attention(), etc. - xllm/kernels/ilu/fused_moe.cpp How xllm calls ixformer::infer::topk_softmax() - ds_vllm/csrc/moe/topk_softmax_kernels.cu vllm-native topk_softmax (TensorRT-LLM derived, 874 lines) GatedDeltaNet (fixes NaN in 4 GDN layers): - xllm/layers/npu_torch/qwen3_gated_delta_net_base.cpp fp32 state accumulation, proper recurrent update Complete FusedMoE pipeline reference: - xllm/layers/ilu/fused_moe.cpp gate -> topk -> expand -> gemm1 -> act -> gemm2 -> combine
51 lines
1.9 KiB
C++
51 lines
1.9 KiB
C++
/* Copyright 2025 The xLLM Authors. All Rights Reserved.
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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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https://github.com/jd-opensource/xllm/blob/main/LICENSE
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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 "ilu_ops_api.h"
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#include "utils.h"
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using namespace ixformer;
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namespace xllm::kernel::ilu {
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void residual_layer_norm(torch::Tensor& input,
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torch::Tensor& output,
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std::optional<torch::Tensor>& residual,
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torch::Tensor& weight,
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std::optional<torch::Tensor>& bias,
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std::optional<torch::Tensor>& residual_out,
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double eps) {
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auto residual_ = residual.value_or(torch::zeros_like(input));
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torch::Tensor residual_out_ = residual_out.value_or(torch::zeros_like(input));
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infer::residual_rms_norm(input,
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residual_,
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weight,
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output,
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residual_out_,
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bias,
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/*alpha=*/1.0,
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eps,
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false);
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}
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void rms_norm(torch::Tensor& output,
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torch::Tensor& input,
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torch::Tensor& weight,
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double eps) {
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std::optional<torch::Tensor> fused_bias = std::nullopt;
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infer::rms_norm(input, weight, output, fused_bias, eps);
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}
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} // namespace xllm::kernel::ilu
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