Mark,
You need to send the full configure.log (it if doesn't fit for petsc-dev,
better to send it to petsc-maint that doesn't mind big attachments.
Barry
> On Jul 1, 2018, at 1:49 PM, Mark Adams <[email protected]> wrote:
>
>
>
> On Sun, Jul 1, 2018 at 1:43 PM Victor Eijkhout <[email protected]>
> wrote:
>
>
>> On Jul 1, 2018, at 12:30 PM, Jeff Hammond <[email protected]> wrote:
>>
>> If you really want to do this, then replace COMMON with CORE to specialize
>> for SKX. There’s not point to using COMMON if you’ve got the MIC path
>> already.
>>
>
> We advocate CORE on our userguides, but the Intel compiler crashes reliably
> with that in certain cases. I think in particular Intel has never figured out
> how complex numbers work. If the compiler crashes it’s always on the petsc
> complex mode. I think I have submitted tickets about that, so maybe it’s
> fixed in update 3.
>
> I have also seen cases where CORE gives numerical problems and replacing by
> COMMON fixed them. Sorry, that was a user ticket and having solved it I
> didn’t bother to submit an Intel support ticket.
>
> I have unconfirmed reports of numerical problems. I will try your flags if I
> can reproduce them. Any other tricks that you used to get MKL/PETSc to work?
>
> Also, PETSc is having problems finding libs. I get this error that it can not
> find -blas and I see that there is a libmkl_blas95_ilp64.a and
> libmkl_blas95_lp64.a, but no libblas.a.
>
> I'm stuck, any help would be appreciated,
>
> Thanks,
> Mark
>
> Executing: cc -o /tmp/petsc-WPf2VB/config.libraries/conftest -g -O0
> -hcpu=mic-knl -qopenmp-simd -fopenmp
> /tmp/petsc-WPf2VB/config.libraries/conftest.o
> -Wl,-rpath,/opt/intel/compilers_and_libraries_2018.1.163/linux/mkl/lib/intel64
> -L/opt/intel/compilers_and_libraries_2018.1.163/linux/mkl/lib/intel64 -lblas
> -lstdc++ -ldl
> Possible ERROR while running linker: exit code 256
> stderr:
> /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld:
> cannot find -lblas
> Popping language C
> Unknown name mangling in BLAS/LAPACK
> **** Configure header /tmp/petsc-WPf2VB/confdefs.h ****
> #if !defined(INCLUDED_UNKNOWN)
>
>
> The support website is a nightmare anyway, so I’m not overly motivated to
> submit support tickets in the first place.
>
> Victor.
