Method get_or_upload

cake-core/src/backends/rocm/mod.rs:249–261

(&self, tensor: &Tensor)

    #[inline]
    fn get_or_upload(&self, tensor: &Tensor) -> Result<*const f32> {
        let id = tensor.id();
        // Fast path: read lock for cache hit (no write contention)
        if let Some(buf) = self.cache.read().unwrap().get(&id) {
            return Ok(buf.as_ptr());
        }
        // Slow path: write lock for cache miss
        let data = Self::to_f32_vec(tensor)?;
        let buf = self.gpu_upload(&data)?;
        let ptr = buf.as_ptr();
        self.cache.write().unwrap().insert(id, buf);
        Ok(ptr)
    }

    #[inline]
    fn rocblas_gemm(&self, a: *const f32, b: *const f32, m: usize, k: usize, n: usize) -> Result<GpuBuf> {