1. A method of data processing using a processor comprising a reconfigurable field of data processing cells, the method comprising: configuring, by the processor, a first subset of the data processing cells, such that the first subset of the data processing cells has a first configuration while one or more other subsets of the data processing cells has, respectively, one or more other configurations; processing data, by the first subset of the data processing cells, while the first subset of the data processing cells is configured with the first configuration; monitoring, by the processor, whether a maximum allowed execution runtime of the first configuration is exceeded; and responsive to determining, in the monitoring step, that the maximum allowed execution runtime of the first configuration is exceeded, removing, by the processor, the first configuration and the one or more other configurations.