libblas error

[davmaz]

After following your directions, I get the following error:
=== compiling la/oblas =============================================================
/tmp/go-build948894470/b001/oblas.test: symbol lookup error: /usr/lib/libblas.so.3: undefined symbol: gotoblas
exit status 127
FAIL github.com/cpmech/gosl/la/oblas 0.002s

Any suggestions?
Best,
Dave

[davmaz]

I've tried to install this per directions on a 'fresh' ubuntu 16.04 load and it too ends in testing with a similar openblas error:
=== compiling la/oblas =============================================================

github.com/cpmech/gosl/la/oblas

./oblas.go:22:28: fatal error: openblas_cblas.h: No such file or directory
compilation terminated.

[cpmech]

Hi, thanks for trying Gosl!!!

I've just installed Ubuntu 16.04.4-desktop on a virtual machine (VirtualBox) and proceeded with the installation instructions from here: https://github.com/cpmech/gosl/blob/master/doc/InstallationOnUbuntu.md

I didn't get any error though! (see figure)

Can you please provide more information about your system?

Cheers.
Dorival

[cpmech]

Hello, I've just tried it again in my fresh Ubuntu installation and all seems fine. I'm happy to help regardless. Cheers. Dorival

[davmaz]

Thanks for checking. Previously I think there was a conflict with OpenBLAS being install previously.
SO, I reformatted my disks and installed a fresh copy of Ubuntu 16.04 and did all the updates.
Then I installed go1.10.1. So far so good.
Then I followed your steps, but this is what I got when trying .all.bash:
--- FAIL: TestMatInv02 (0.00s)
t_matrix_ops_test.go:30: matrix "b⋅bi" is not diagonal. diff=1.3587010698815905e-10

[cpmech]

Excellent!

This error is not an issue. I usually set the tolerances to a very small number and sometimes different CPUs produce slightly different results.

I've just increased the tolerance to 1e-9.

You may like to git pull and try again.

Cheers.
Dorival

[davmaz]

Perfect:
=== compiling tsr =============================================================
. . . testing . . . Tensor2set01
. . . testing . . . Tensor4set01
PASS
ok github.com/cpmech/gosl/tsr 0.008s

=== SUCCESS! ============================================================

Best regards,
Dave

[cpmech]

Thanks!