1. A system comprising: a hardware-based compute unit configured to perform operations comprising: generating a first instance of computation and a second instance of computation, wherein the first and second instances of the computation are part of a workgroup comprising a plurality of wavefronts adapted for parallel execution; processing the first instance of computation and the second instance of computation using a plurality of hardware-based processors in the compute unit, wherein the processing generates a first instance of output associated with the first instance of computation using a load and the second instance of output associated with the second instance of computation using the load; and verifying accuracy of the first and second instances of output against each other in memory in the compute unit to ensure accuracy of output of the compute unit.