[petsc-users] Question on TS

[amlan barua]

Hi,
Greetings to the team! I am currently using PETSc for my research. Here is
a brief description of my problem and my query
a) I have a set a points distributed on a 3 dimensional lattice.
b) Corresponding to each point in this set, 7 odes are defined.
c) Of these 7 odes, 6 are uncoupled but one is coupled to nearest
neighbors.
d) To integrate the odes I am using PETSc's DMDA and TS. But my application
needs implicit as well as locally high order solver. I am looking for an
implicit RK4 type method. Does PETSc have an IRK4 support or equivalent?
e) Suppose I want to build my own implicit time stepper. Should I imitate
ex2.c of SNES solver?
Thanks
Amlan
IISER Pune, India
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