Solver slow when using BigFloat

[Shakir]

I found out that in scenarios where I need more machine precision in order to meet tolerance values, and I use the BigFloat datatype, the solver becomes much much slower (takes longer for each iteration) especially as the number of unknowns increases.

[Antoine Levitt]

BigFloats are slow, yes. Not much nlsolve can do there.

[Patrick Kofod Mogensen]

Try ArbFloat, double-double approaches or similar. I can write a tutorial. I don’t know for a fact that all extended precision types work, but if they don’t, I’ll consider it a bug.

[Shakir]

OK, I will look into using either. Thanks