On fedora, software update might install/update openCL library? called "beignet", which causes conflict with the one from Nvidia if you have installed a Nvidia graphic card and driver.
When you launch Houdini and find errors below, probably this conflict is happening:
X server found. dri2 connection failed!
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
So just remove it.