Hi Pieter,
On 28/05/16 15:04, Pieter Neerincx wrote:
Hi all,
I'm trying to build a new R with a recent foss toolchain. I've tried 2015b and
2016a, but so far no luck. The build fails on compiling libRlapack.so. After
some digging I found out that I have for example as part of foss/2015b:
ScaLAPACK/2.0.2-gompi-2015b-OpenBLAS-0.2.14-LAPACK-3.5.0
with a dependency on
OpenBLAS/0.2.14-GNU-4.9.3-2.25-LAPACK-3.5.0
The name suggests that LAPACK/3.5.0 is a dependency and will be loaded too, but LAPACK is
absent according to "module list", which makes sense as none of the deployed
module files specify LAPACK.
I also cannot find LAPACK back as OS dependency in the corresponding *.eb
easyconfigs... What am I missing here?
The LAPACK sources are provided to OpenBLAS, which picks it up during
the build and embeds the LAPACK symbols in the OpenBLAS library:
$ nm $EBROOTOPENBLAS/lib/libopenblas.a | grep dgeev
dgeev.o:
0000000000000000 T dgeev_
dgeevx.o:
0000000000000000 T dgeevx_
lapacke_dgeev.o:
0000000000000000 T LAPACKE_dgeev
U LAPACKE_dgeev_work
lapacke_dgeev_work.o:
0000000000000000 T LAPACKE_dgeev_work
U dgeev_
lapacke_dgeevx.o:
0000000000000000 T LAPACKE_dgeevx
U LAPACKE_dgeevx_work
lapacke_dgeevx_work.o:
0000000000000000 T LAPACKE_dgeevx_work
U dgeevx_
I was confused by this too initially, see
https://github.com/xianyi/OpenBLAS/issues/203
regards,
Kenneth
