Tony Pan

MPI_Comm_split with MPI_UNDEFINED as color would produce a subcommunicator == MPI_COMM_NULL. currently, mxx::comm.split(color) when supplied with MPI_UNDEFINED does not appear to handle this case properly. Subsequent calls (even when logic...

Add UI view for filters on and off

7

I've seen this before for showing an image sharpening on and off. The image is static, but split by a movable bar. On one side of the bar the filter...