The aim of this thesis is to propose different implementations to increase fault mitigation for the reference FlexGrip model, which represents a simplified version of the NVIDIA GPU architecture. These solutions are not extensively included in GPGPUs, due to the limited reliability requirements of the applications they were originally intended for. Three solutions have been developed and are presented in the thesis document: -??A Dynamically configurable self-repairing (BISR) mechanism aimed at reducing the impact of permanent faults in the Scalar Processor (SP) cores in GPGPUs. This first solution mechanism is based on spare SP modules that can be used to replace a possible faulty SPs when a fault affecting it is detected.