| # Kernel patch: ttnn 0.78.0 PyPI wheel packaging gap | |
| The `ttnn` PyPI wheel (0.78.0) ships `tt_metal/fabric/impl/kernels/edm_fabric/fabric_erisc_router.cpp` | |
| but omits three sibling kernel source files that `FabricConfig::FABRIC_1D` needs to JIT-compile its | |
| mux/relay routing kernels: `fabric_router_mux_extension.cpp`, `fabric_router_relay_extension.cpp`, | |
| `fabric_router_udm_mux_extension.cpp`. Both are present in the real tt-metal v0.78.0 source tree | |
| (github.com/tenstorrent/tt-metal, same tag this bundle's `ttnn` pin matches) -- this looks like an | |
| upstream wheel-packaging omission, not anything about this model or tt-model-manager. | |
| These three files are vendored here byte-for-byte from that source tree and made discoverable via | |
| `TT_METAL_KERNEL_PATH` (an existing tt_metal env var -- see `tt_metal/llrt/rtoptions.cpp` -- that adds | |
| an extra kernel search directory ahead of the installed `ttnn` package's own tree), set in `run.sh`. | |
| Remove this directory and the env var once a `ttnn` release ships these files itself. | |