open("/dev/shm/test.txt", "w") do io
    write(io, repr(Wengert(Meta.parse(string(
    ";CAM=",CAM_energy,
    ";dCAMdR=",diff(CAM_energy, rho),
    ";dCAMdS=",diff(CAM_energy, sigma),
    ";dCAMdL=",diff(CAM_energy, lapl),
    ";dCAMdT=",diff(CAM_energy, tau)
                                    )), variable=:dp)))
end;

open("/dev/shm/test.txt", "w") do io
    write(io, repr(Wengert(Meta.parse(string(
    ";d2CAMdRdR=",diff(CAM_energy,rho,rho),
    ";d2CAMdRdS=",diff(CAM_energy,rho,sigma),
    ";d2CAMdRdL=",diff(CAM_energy,rho,lapl),
    ";d2CAMdRdT=",diff(CAM_energy,rho,tau),
    ";d2CAMdSdS=",diff(CAM_energy,sigma,sigma),
    ";d2CAMdSdL=",diff(CAM_energy,sigma,lapl),
    ";d2CAMdSdT=",diff(CAM_energy,sigma,tau),
    ";d2CAMdLdL=",diff(CAM_energy,lapl,lapl),
    ";d2CAMdLdT=",diff(CAM_energy,lapl,tau),
    ";d2CAMdTdT=",diff(CAM_energy,tau,tau)
                                    )), variable=:dp)))
end;