[Help-gsl] Most efficient and accurate method to solve linear system using GSL?

[Evan Ruzanski]

Hello-

I'm using the GSL C library to solve a linear system, Y = HX, with a 
design matrix, H, of real numbers sized with many more rows than 
columns, i.e., 107910 X 27. I'm looking for advice on the best function 
and method to use in terms of speed, stability, and accuracy. Can you 
please help???

Many thanks,
Evan