Re: Tester for openblas needed

[Marco Atzeri <marco dot atzeri at gmail dot com>]

On 10/20/2014 6:16 PM, Tony Kelman wrote:
> > look in the source package
> > http://matzeri.altervista.org/x86_64/openblas/
>
> Thanks. I'm a little surprised the cygblas-0.dll (x86_64, 0.2.12-1) does
> not appear to be linked to libgfortran. Were you seeing your test
> executables using multiple cores? I think you may have to build with
> USE_THREAD=1 to enable threading (or USE_OPENMP=1 for openmp)?

openblas is written in C

USE_THREAD=1 and  USE_OPENMP=1, can be used dynamically ;
if I am not wrong.

> I may be doing this wrong, but I'm getting errors from your openblas
> build, but not the reference blas package, when I run the following:
>
> $ curl -O
> https://raw.githubusercontent.com/xianyi/OpenBLAS/develop/test/sblat2.f
> $ gfortran -o sblat2 sblat2.f -lblas
> $ rm -f SBLAT2.SUMM
> $ curl
> https://raw.githubusercontent.com/xianyi/OpenBLAS/develop/test/sblat2.dat |
> ./sblat2
>
> This outputs messages like:
> ** On entry to SGEMV  parameter number  1 had an illegal value
> and so on for the other single-precision level 2 functions in that test.
>
> This does seem to work okay on Linux or an existing i686-w64-mingw32 build.

It fails also on the netlib blas reference so it is not a specific 
openblas issue.
It must be something more general like
http://icl.cs.utk.edu/lapack-forum/archives/lapack/msg01441.html

During the OpenBlas build the test is passed

$ cat SBLAT2.SUMM
------------------------------------------
 TESTS OF THE REAL             LEVEL 2 BLAS

 THE FOLLOWING PARAMETER VALUES WILL BE USED:
   FOR N                   0     1     2     3     7    31    63
   FOR K                   0     1     2     4
   FOR INCX AND INCY       1     2    -1    -2
   FOR ALPHA             0.0   1.0   0.7
   FOR BETA              0.0   1.0   0.9

 ROUTINES PASS COMPUTATIONAL TESTS IF TEST RATIO IS LESS THAN   16.00

 RELATIVE MACHINE PRECISION IS TAKEN TO BE  1.2E-07

 SGEMV  PASSED THE TESTS OF ERROR-EXITS

 SGEMV  PASSED THE COMPUTATIONAL TESTS (  4324 CALLS)
[cut]
 SSYR2  PASSED THE TESTS OF ERROR-EXITS

 SSYR2  PASSED THE COMPUTATIONAL TESTS (   577 CALLS)

 SSPR2  PASSED THE TESTS OF ERROR-EXITS

 SSPR2  PASSED THE COMPUTATIONAL TESTS (   577 CALLS)

 END OF TESTS
-----------------------------------------------------

but the test program is built static, not linked to the dll.


> -Tony

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