ompp.dll is a Dynamic Link Library file that is used by ZBrush, a digital sculpting and painting software. It is likely related to the software's multi-threading capabilities, as the name "ompp" may refer to Open Multi-Processing. This DLL file may be responsible for managing the allocation of system resources, such as CPU usage and memory management, to improve the performance of the software.
If you encounter an error related to ompp.dll, it may be caused by a corrupted or outdated version of the file. You can try re-installing ZBrush or replacing the ompp.dll file with a new copy from a trusted source. It is important to make sure you have the correct version of the file for your specific version of ZBrush to avoid any compatibility issues.