[Feature]: Move default compile backend to use torch-cudagraph

[tcherckez-nvidia]

🚀 The feature, motivation and pitch

torch-compile is be a perf feature, cudagraph is the main flow

Alternatives

No response

Additional context

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🔗 Similar Issues

Possible Duplicates

• [Feature]: Optimize usage of torch.compile #7540

Related Issues

• [AutoDeploy]: Faster model compilation for DS-R1 #8239
• [AutoDeploy] Investigate use torch.compile + cudagraph for transformers mode #7312

👤 Suggested Assignees

• nzmora-nvidia
• lucaslie

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