MKL Error: Parameter 6 was incorrect on entry on DGETRI

[ssylee]

I have been getting the message in the heading from calling the function as below:

Code: Select all

dgetri_( &N, A, &LDA, IPIV, wk, &LWK, &INFO );

Before I copy and paste the information given on the parameters, what would be the most common reason of getting that error? Is it from inversing a matrix that's not invertible? I tried inverting an identity matrix and got the same problem as well.

[Julien Langou]

The error message is pretty clear: you parameter LWK is not correct.
First it needs to be an INTEGER ( int ), then it needs to be either greater than MAX(1,N) (regular call) or it needs to be -1.
Keep in mind that LWK is the size of the array WORK.