Data Error at pos 1
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Data Error at pos 1
I've been getting the following error after calling culaSgesv():
Data error at pos 2 (see the CULA Reference Manual for more information)
Q: Any idea what the data error is referencing?
Note: I looked through the CULA reference Manual, and the data error section sends you to Lapack's documentations.. which inevitably leads you nowhere.
Thank you for any insight you might have.
Data error at pos 2 (see the CULA Reference Manual for more information)
Q: Any idea what the data error is referencing?
Note: I looked through the CULA reference Manual, and the data error section sends you to Lapack's documentations.. which inevitably leads you nowhere.
Thank you for any insight you might have.
- scodyer
- Posts: 2
- Joined: Thu Oct 28, 2010 10:49 am
Re: Data Error at pos 1
A data error in this routine indicates a singular matrix with a zero on the diagonal.
- kyle
- Administrator
- Posts: 301
- Joined: Fri Jun 12, 2009 7:47 pm
Re: Data Error at pos 1
Okay, that is what I was guessing. Thank you.
- scodyer
- Posts: 2
- Joined: Thu Oct 28, 2010 10:49 am
Re: Data Error at pos 1
It's probably more than a zero on the diagonal, as pivoting can avoid some of them. You have either two linearly dependent rows and/or a row or column of all zeros.
- john
- Administrator
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- Joined: Thu Jul 23, 2009 2:31 pm
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