1. thread matrix assembly part for  Advection_Diffusion_DG.F90 2. More work need to be done to figure out the sparsity of MASSLUMPED_RT0 diffusion scheme, I simply set threads back to 1 if MASSLUMPED_RT0 diffusion scheme is being used for now.
1. thread matrix assembly part for  Advection_Diffusion_DG.F90
2. More work need to be done to figure out the sparsity of MASSLUMPED_RT0 diffusion scheme, I simply set threads back to 1 if MASSLUMPED_RT0 diffusion scheme is being used for now.

jjo31/ATHAM-Fluidity,iakovos-panourgias/fluidity,jrper/fluidity,jrper/fluidity,rjferrier/fluidity,jrper/fluidity,rjferrier/fluidity,jrper/fluidity,rjferrier/fluidity,jrper/fluidity,jjo31/ATHAM-Fluidity,jjo31/ATHAM-Fluidity,iakovos-panourgias/fluidity,iakovos-panourgias/fluidity,rjferrier/fluidity,iakovos-panourgias/fluidity,jjo31/ATHAM-Fluidity,jjo31/ATHAM-Fluidity,rjferrier/fluidity,iakovos-panourgias/fluidity