NVIDIA / NVIDIA/TensorRT-LLM

[Feature]: Investigate the unstable perf of llama 3.1 8B fp8 in CI test_sanity_perf.py

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feature request General perf
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Description

🚀 The feature, motivation and pitch

Investigate why llama 3.1 8B fp8 provides unstable results across CI runs and cannot be tested in CI. see:
https://nvbugspro.nvidia.com/bug/6244474

This model is host bound (even in c=256) so the fluctuation is most likely related to cpu load.

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