dont compute block preconditioner for Chebyshev filter
dont compute block preconditioner for Chebyshev filter

dithillobothrium/SIRIUS,toxa81/sirius,electronic-structure/sirius,dithillobothrium/SIRIUS,toxa81/sirius,toxa81/sirius,toxa81/sirius,electronic-structure/sirius,toxa81/sirius,electronic-structure/sirius,dithillobothrium/SIRIUS,electronic-structure/sirius,electronic-structure/sirius,dithillobothrium/SIRIUS,toxa81/sirius,electronic-structure/sirius,electronic-structure/sirius