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mrc-ide / odin

ᚩ A DSL for describing and solving differential equations in R
https://mrc-ide.github.io/odin
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Add troubleshooting doc #242

Open richfitz opened 3 years ago

richfitz commented 3 years ago

E.g., where lsoda requires more steps, as it's not obvious:

richfitz commented 3 years ago

this sort of thing

DLSODA-  At current T (=R1), MXSTEP (=I1) steps   
      taken on this call before reaching TOUT     
In above message, I1 = 5000

In above message, R1 = 23.204

Warning messages:
1: In lsoda(y, times, func, parms, ...) :
  an excessive amount of work (> maxsteps ) was done, but integration was not successful - increase maxsteps
2: In lsoda(y, times, func, parms, ...) :
  Returning early. Results are accurate, as far as they go
richfitz commented 3 years ago

now more fully discussed here: https://github.com/mrc-ide/odin/issues/243