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Hello I need your help can you give me an example in which we solve a stiff problems with a sparce jacobian best wiches

Hello when I running the example2.f90 an error appers like: 88 | CALL DVODE_F90(FEX,NEQ,Y,T,TOUT,ITASK,ISTATE,OPTIONS, G_FCN=GEX) | 1 Error: There is no specific subroutine for the generic ‘dvode_f90’ at (1)...

Help me pleeease when I running my example using the dvode subroutine dvode.f90 and the options OPTIONS = SET_OPTS(BANDED_J=.TRUE.,RELERR=RTOL,ABSERR_vector=ATOL, & LOWER_BANDWIDTH=ML,UPPER_BANDWIDTH=MU) some errors appear like: 213 | LOWER_BANDWIDTH=ML,UPPER_BANDWIDTH=MU)...

Thank you very much for your help. but when I coming to run the stiffoptions.90 using the dvode_f90 subroutine, some errors appear like: 1982 | DVODE_F90(DERIVS,NEQ,Y,T,TOUT,ITASK,ISTATE,OPTIONS,J_FCN=JACD) | 1 Error: There is...

Hello I demand your help . I'm going to study the accretion-ejection disks using the DVODE-f90 code. when I compile my example. the calcul stops at T=3,21. the above message, R1 = 0.3215402479903D+01 At t = 0.3215D+01 y = 0.321568D+01 0.158443D+14 0.193170D+39 Error halt: ISTATE =...

Hello When I try compiling the example1.f90 I get: $f955 dvode_f90_m.f90 example1.f90 -o test CALL DVODE_F90(FEX,NEQ,Y,T,TOUT,ITASK,ISTATE,OPTIONS,J_FCN=JEX) | 1 Error: There is no specific subroutine for the generic...

Hello I would ask you if the dvode fortran code can generate automatically the jacobien matrix or we mut added it best regards

Deear Collegue I'm working on the stationary accretion-ejection disks using the fortran code DVODE. The calcul stops for short length from the disk surface. Can you help me how to integrate the equations to infinity using the devodesubroutine. you find the fortran code in the attached file...