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Old 2006-03-09, 11:56   #1
R.D. Silverman
R.D. Silverman's Avatar
"Bob Silverman"
Nov 2003
North of Boston

22·1,871 Posts
Default CWI Matrix Solver


Has anyone else ever encountered an error from the CWI solver
that says "too many orthogonal vectors" near the very end of the

I just got this message while doing the LA for 2,815-.

It is possible that I have some kind of memory/hardware problem.
This is the second time I have seen this. The last time I re-filtered
the data, re-ran the solver and things were fine.

Last night I tried backing up the computation to the last saved
checkfiles, but still had the same problem at the end.

I did some memory diagnostics with the BIOS, but turned up nothing.

Tonight, I will modify the software to ignore the condition and continue
the computation anywhere, but I do not expect success. I will burn
a CD, transfer the data to another machine and try re-running with the
same matrix, rather than re-filtering. This will tell me if it is likely a
software bug or a hardware problem.

But I will have to wait another 8 days for the result.

Ideas, anyone?
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