Nvidia accused of cheating on benchmark test for big data computing. The Transaction Processing Performance Council (TPC) has accused chip giant Nvidia of cheating on a key benchmark test that the Council uses to assess high-performance computing clusters, The Register reported. Nvidia had claimed at its GPU Technology Conference last year that its Nvidia DGX A100 system, marketed for many A.I. use cases, scored 19.5 times better than its nearest competitor on the key TPCx-BB benchmark. But now TPC says Nvidia has tweaked computing workloads to bypass constraints in the test. "In effect, they weren’t running the same benchmark, so all corresponding claims are invalid," Michael Majdalany, administrator of the TPC, told The Register.