Merge OpenAI Triton till Nov 29th

[whitneywhtsang]

It is essential to keep up to date with OpenAI Triton, to get the latest features, and reduce the difficulty to upstream our changes to OpenAI Triton.

From previous upstream merges:
Commits to reland: #2811
UTs to fix: #2633, #2878

This ticket is continuation of:

• Merge OpenAI Triton till Nov 8th #2577
• Merge OpenAI Triton till Oct 25th #2483
• Merge OpenAI Triton till Oct 11st #2383

[whitneywhtsang]

Moved up from Nov 6 to Nov 29 Triton version from OpenAI. [#2725, #2727, #2728, #2730, #2761, #2779, #2781, #2783, #2793, #2807, #2810, #2819, #2838, #2848, #2858, #2876 ]