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[Tensor parallel] Clear tensor-parallel meta backend caches before reusing the buffer #23428

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[Tensor parallel] Clear tensor-parallel meta backend caches before reusing the buffer #23428

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7 changes: 7 additions & 0 deletions ggml/src/ggml-backend-meta.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1407,8 +1407,15 @@ static void ggml_backend_meta_buffer_clear(ggml_backend_buffer_t buffer, uint8_t
}

static void ggml_backend_meta_buffer_reset(ggml_backend_buffer_t buffer) {
GGML_ASSERT(ggml_backend_buffer_is_meta(buffer));
ggml_backend_meta_buffer_context * buf_ctx = (ggml_backend_meta_buffer_context *) buffer->context;

buf_ctx->simple_tensors.clear();
buf_ctx->split_state_cache.clear();

const size_t n_buffers = ggml_backend_meta_buffer_n_bufs(buffer);
for (size_t i = 0; i < n_buffers; i++) {
ggml_reset(buf_ctx->buf_configs[i].ctx);
ggml_backend_buffer_reset(ggml_backend_meta_buffer_simple_buffer(buffer, i));
}
}
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