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= How much faster is TUFLOW HPC comparing to Classic? =
This is largely based on hardware that is used to run HPC models (CPU and GPU) and its performance. On average, HPC using GPU hardware runs about 10 times faster than Classic and about 30 times faster than HPC using CPU with two CPU threads (current default is 4). Even though HPC using CPU hardware is in general slower than Classic, more CPU threads can be used to achieve faster run times. As TUFLOW Classic is not parallelised it can only run on one CPU thread and cannot be further improved even with available CPU resources.<br>
For further information and discussion see: [[Hardware_Benchmarking_Topic_HPC_on_CPU_vs_GPU | Hardware Benchmarking Topic HPC on CPU vs GPU]]
= Why is my model using 2020 HPC slower than 2018 HPC? =
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