You may also add Phoenix log file extension (. Since cache files are often hundreds of Megabytes or more, this could cause the simulation to slow down several times.Ĭonsider adding an exception in your Anti-Virus software for these file formats. vdb as a potential risk and consume significant processing power to scan them. On some machines, the Anti-Virus software may treat Phoenix's files. GPUs are currently only used for the GPU preview of fire/smoke simulations. Turning off the preview for all grid and particle channels during large simulations could also help speed up the simulation. Simulating on one NUMA node is often faster than waiting for multiple nodes to synchronize.īoth large and small simulations take significant time just to write the cache files from the simulation and to read them back for the preview, so good storage speed can help decrease simulation times up to 30%. Also, NUMA and multiprocessor architectures do not perform well with Phoenix. Processor speed is more important than core count. The entire simulation grid gets processed tens to hundred times per simulation step, so the bus speed is the bottleneck in most simulations. Phoenix transfers huge amounts of data between memory and the CPU.
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