chore: import upstream snapshot with attribution

third_party/xla/docs/pjrt/index.md

@@ -0,0 +1,31 @@
+Project: /_project.yaml
+Book: /_book.yaml
+
+<link rel="stylesheet" href="/site-assets/css/style.css">
+
+# PJRT - Uniform Device API
+
+PJRT C API is the uniform Device API that we want to add to the ML ecosystem.
+The long term vision is that: (1) frameworks (TF, JAX, etc.) will call PJRT,
+which has device-specific implementations that are opaque to the frameworks; (2)
+each device focuses on implementing PJRT APIs as PJRT plugins, which can be
+opaque to the frameworks.
+
+## Communication channels
+
+* Issues and feature requests can be filed in the [OpenXLA/xla repo](https://github.com/openxla/xla).
+* Questions regarding PJRT can be asked on the [OpenXLA Discord][discord].
+
+## Resources
+
+*   [PJRT C API header](https://github.com/openxla/xla/blob/main/xla/pjrt/c/pjrt_c_api.h)
+*   [PJRT C API changelog](https://github.com/openxla/xla/blob/main/xla/pjrt/c/CHANGELOG.md)
+*   [PJRT integration guide](https://github.com/openxla/xla/blob/main/xla/pjrt/c/docs/pjrt_integration_guide.md)
+*   [PJRT design docs](https://drive.google.com/drive/folders/18M944-QQPk1E34qRyIjkqDRDnpMa3miN)
+*   [PJRT API ABI versioning and compatibility](https://docs.google.com/document/d/1TKB5NyGtdzrpgw5mpyFjVAhJjpSNdF31T6pjPl_UT2o/edit)
+*   [PJRT Plugin Mechanism design doc](https://docs.google.com/document/d/1Qdptisz1tUPGn1qFAVgCV2omnfjN01zoQPwKLdlizas/edit)
+*   [OpenXLA 2024 Fall DevLab PJRT plugin tutorial slides](https://drive.google.com/file/d/1epUJkMONG2t06WOeMHz4Oi3F_-8cTuz-/view)
+    ([recording](https://www.youtube.com/watch?v=2GlMqaNxP_w&list=PLlFotmaRrOzv2OIEpijqiHGmY7rpscFcj))
+*   [IREE PJRT plugin implementation](https://github.com/iree-org/iree/tree/main/integrations/pjrt)
+
+[discord]: https://discord.gg/ZKXq7b3V8A "Join on Discord"