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LiteVAR: Compressing Visual Autoregressive Modelling with Efficient Attention and Quantization
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Visual Autoregressive (VAR) has emerged as a promising approach in image generation, offering competitive potential and performance comparable to diffusion-based models. However, current AR-based visual generation models require substantial computational resources, limiting their applicability on resource-constrained devices. To address this issue, we conducted analysis and identified significant redundancy in three dimensions of the VAR model: (1) the attention map, (2) the attention outputs when using classifier free guidance, and (3) the data precision. Correspondingly, we proposed efficient attention mechanism and low-bit quantization method to enhance the efficiency of VAR models while maintaining performance. With negligible performance lost (less than 0.056 FID increase), we could achieve 85.2% reduction in attention computation, 50% reduction in overall memory and 1.5x latency reduction. To ensure deployment feasibility, we developed efficient training-free compression techniques and analyze the deployment feasibility and efficiency gain of each technique.
Forward citations
Cited by 6 Pith papers
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Token Radius Attention for Efficient Video Generation
Video diffusion transformers can run ~1.5-2x faster with competitive quality by converting each query's attention entropy into a spatially decayed retention radius instead of dense attention.
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FPQVAR: Floating Point Quantization for Visual Autoregressive Model with FPGA Hardware Co-design
A post-training floating-point quantization framework with grouped Hadamard rotation and learned smoothing brings 4-bit visual autoregressive image generation to near-FP16 quality, plus a matching FPGA accelerator.
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Adaptive Visual Autoregressive Acceleration via Dual-Linkage Entropy Analysis
A training-free entropy-guided token-pruning framework accelerates VAR image generation up to 2.9× with negligible benchmark loss by activating pruning at an adaptive entropy-growth inflection point and adjusting rati...
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FasterVAR: Plug-and-Play Acceleration for Visual Autoregressive Models
Stage-aware pruning of late generation steps, using random projection and cached-feature restoration, speeds up VAR text-to-image models by up to 3.4x with minimal quality loss.
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Memory-Efficient Visual Autoregressive Modeling with Scale-Aware KV Cache Compression
ScaleKV cuts KV cache memory for Visual Autoregressive text-to-image generation to 10% by classifying layers as drafters or refiners per scale and pruning low-attention tokens while keeping benchmark scores nearly unchanged.
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SkipVAR: Accelerating Visual Autoregressive Modeling via Adaptive Frequency-Aware Skipping
SkipVAR selects, per sample, between step skipping and unconditional branch replacement using handcrafted frequency features and a trained logistic regression, to accelerate visual autoregressive generation.
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