Re: GotoBLAS2 gives many FAILS on test of eigs.cc

[John W. Eaton]

On 20-Jan-2011, Fredrik Lingvall wrote:

| On 01/20/11 09:58, John W. Eaton wrote:
| > On 20-Jan-2011, Fredrik Lingvall wrote:
| >
| > | I also have the issue that I need to change n from 200 to 100 in
| > | doc/interpreter/sparseimages.m to make Octave build (see also
| > | 
http://octave.1599824.n4.nabble.com/Octave-3-3-54-snapshot-available-for-ftp-td3051025.html)
| > | 
| > | It's configured with:
| > | 
| > | ./configure  CFLAGS="-O2 -pipe -march=native -pthread" \
| > |          CXXFLAGS="-O2 -pipe -march=native -pthread" \
| > |          LDFLAGS="-lgfortran" F77=gfortran \
| > |          FFLAGS="-O2 -pipe -march=native -pthread" \
| > |          F77_INTEGER_8_FLAG="-fdefault-integer-8" \
| > |          --enable-64 --prefix=/usr/local/ \
| > |          --with-blas=/usr/local/lib/libBLAS.so
| > | --with-lapack=/usr/local/lib/libLAPACK.so --enable-shared
| >
| > And you built your copies of libBLAS.so and libLAPACK.so so that they
| > also use 8-byte integers?
| >
| > jwe
| Yes.
| 
| LAPACK is build with:
| 
| OPTS     = -O2 -march=native -fdefault-integer-8 -fPIC
| 
| and Goto BLAS with:
| 
| BINARY=64
| 
| and
| 
| INTERFACE64 = 1

To debug the problem, you can start by going to the test directory of
your build tree and running

  ../run-octave -g --norc --silent --no-history $srcdir/fntests.m $srcdir

where $srcdir should be replaced by the name of the directory where
the sources for the test directory are.  Then type

  b main
  r
  b error
  b xstopx
  c

at the (gdb) prompt.  Then when you get to the error about the bad
parameter passed to DGEMV, you should end up back at the debug prompt,
inside the xstopx_ or error function.  Then get a backtrace by typing

  where

at the gdb prompt and let us know where the call to DGEMV is (file and
line number).  That might give a clue.

jwe