Re: Octave 5.2.0 release

[Dmitri A. Sergatskov]

On Fri, Jan 17, 2020 at 11:08 AM John W. Eaton <address@hidden> wrote:

On 1/16/20 9:26 PM, Nicholas Jankowski wrote:

> side question: now that w32 is fading into antiquity, what are the
> drawbacks to having w64-64 just become the default build for w64?

As stated previously, the default is to build with 64-bit indexing on
64-bit systems.  It is only the BLAS and other Fortran libraries that
are an issue.  We provide Windows binaries with 32-bit and 64-bit BLAS
because we are building all the dependencies for those binary
distributions.  But for Linux, the default system BLAS libraries are
still using 32-bit integers.  If those change, then the Linux
distributions could start to distribute fully 64-bit aware versions of
Octave as well.

Fedora ships openblas with 64-bit integers, e.g.:

<<<<

rpm -qi openblas-threads64-0.3.7-1.fc31.x86_64
Name        : openblas-threads64
Version     : 0.3.7
Release     : 1.fc31
Architecture: x86_64

<...deleted...>

Summary     : An optimized BLAS library based on GotoBLAS2, pthreads version
Description :

OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD
version. The project is supported by the Lab of Parallel Software and
Computational Science, ISCAS. http://www.rdcps.ac.cn

This package contains the library compiled with threading support and
64-bit integer interface.

>>>>

I could not figure out how to use it though. Running configure --with-blas=/usr/lib64/libopenblasp64.so.0

results in:

<<<<

checking BLAS library integer size... 8
checking for sgemm_ in /usr/lib64/libopenblasp64.so.0... yes
checking whether LSAME is called correctly from Fortran... yes
checking whether ISAMAX is called correctly from Fortran... no
checking whether SDOT is called correctly from Fortran... no
checking whether DDOT is called correctly from Fortran... yes
checking whether CDOTU is called correctly from Fortran... no
checking whether ZDOTU is called correctly from Fortran... no
checking BLAS library integer size... 8
configure: error: BLAS and LAPACK libraries are required

>>>>

 

jwe

Dmitri.

--