This is the command darktable-cltest that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
darktable-cltest - check if there is a usable OpenCL environment for darktable to use
darktable is a digital photography workflow application for Linux, Mac OS X and several
other Unices. It's described further in darktable(1).
darktable-cltest checks if there is a usable OpenCL environment on your system that
darktable can use. It emits some debug output that is equivalent to calling darktable -d
opencl and then terminates.
Use darktable-cltest online using onworks.net services