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At 1:14:45 of Houdini 18.5 Hive day 2 the instructor goes over how to do collisions with nanoVDB gpu solver. However, even if I follow his instructions I cannot get this to work. I create a sphere, convert it to a VDB with vdbFromPolygons node and then connect it to the pyro solver. In his own video at 1:16 it is unclear visually if its even working for him as well since the explosion is so large, though he claims it does. The only way I can get collisions to work is to uncheck pyroSolver Minimal OpenCL Solve and uncheck openCL. Then I can clearly see that the collision is indeed working. I am a very new user to houdini. How can I get the nanoVDB gpu solver to accept collisions like he claims is possible in the video or do I have to stick with the non-openCL, CPU solver ?
