HPC FAQ: Difference between revisions

=Why does my TUFLOW HPC simulation take longer than TUFLOW Classic?=

The primary reasons why the HPC may run slow are discussed below:

If running on the same CPU hardware, a well-constructed Classic model on a good timestep is nearly always faster than HPC running on a single CPU thread (i.e. not using GPU hardware). Running a single HPC simulation across multiple CPU threads may produce a faster simulation than Classic. HPC is best run using GPU hardware. HPC run using good GPU hardware should be faster than Classic on CPU. The <u>[[Hardware_Benchmarking | Computer Hardware Benchmark]]</u> page included guidance on the fastest available hardware for TUFLOW modelling.