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36 lines
2.6 KiB
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36 lines
2.6 KiB
Markdown
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
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# Inferenza Efficiente su CPU
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Questa guida si concentra sull'inferenza di modelli di grandi dimensioni in modo efficiente sulla CPU.
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## PyTorch JIT-mode (TorchScript)
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TorchScript è un modo di creare modelli serializzabili e ottimizzabili da codice PyTorch. Ogni programma TorchScript può esere salvato da un processo Python e caricato in un processo dove non ci sono dipendenze Python.
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Comparandolo con l'eager mode di default, jit mode in PyTorch normalmente fornisce prestazioni migliori per l'inferenza del modello da parte di metodologie di ottimizzazione come la operator fusion.
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Per una prima introduzione a TorchScript, vedi la Introduction to [PyTorch TorchScript tutorial](https://pytorch.org/tutorials/beginner/Intro_to_TorchScript_tutorial.html#tracing-modules).
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### IPEX Graph Optimization con JIT-mode
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Intel® Extension per PyTorch fornnisce ulteriori ottimizzazioni in jit mode per i modelli della serie Transformers. Consigliamo vivamente agli utenti di usufruire dei vantaggi di Intel® Extension per PyTorch con jit mode. Alcuni operator patterns usati fequentemente dai modelli Transformers models sono già supportati in Intel® Extension per PyTorch con jit mode fusions. Questi fusion patterns come Multi-head-attention fusion, Concat Linear, Linear+Add, Linear+Gelu, Add+LayerNorm fusion and etc. sono abilitati e hanno buone performance. I benefici della fusion è fornito agli utenti in modo trasparente. In base alle analisi, il ~70% dei problemi più popolari in NLP question-answering, text-classification, and token-classification possono avere benefici sulle performance grazie ai fusion patterns sia per Float32 precision che per BFloat16 Mixed precision.
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Vedi maggiori informazioni per [IPEX Graph Optimization](https://intel.github.io/intel-extension-for-pytorch/cpu/latest/tutorials/features/graph_optimization.html).
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#### Installazione di IPEX
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I rilasci di IPEX seguono PyTorch, verifica i vari approcci per [IPEX installation](https://intel.github.io/intel-extension-for-pytorch/).
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