| 1 |
-----BEGIN PGP SIGNED MESSAGE----- |
| 2 |
Hash: SHA1 |
| 3 |
|
| 4 |
Greetings, |
| 5 |
|
| 6 |
[Sorry for my long absence, but I had to prepare for an important and |
| 7 |
difficult exam that took me more time than I had whished it had.] |
| 8 |
|
| 9 |
I'd like to get some input from you on my work on eselect[1] modules |
| 10 |
replacing {blas,lapack}-config. To give you an impressions on the |
| 11 |
differences between these modules and the current config tools, here |
| 12 |
comes a short synopsis. |
| 13 |
|
| 14 |
*-config rely on short bash scripts which are installed alongside the |
| 15 |
packages. To switch between LAPACK and BLAS implementations, the |
| 16 |
appropriate config tool sources the script and runs setup(). This is |
| 17 |
error prone, as the get_libdir() problem has shown :-/ |
| 18 |
|
| 19 |
The corresponding eselect modules approach the setup differently. Each |
| 20 |
packages that provides either BLAS or LAPACK has a dedicated check_*() |
| 21 |
and setup_*() routine inside the module. For example, ACML has these |
| 22 |
functions inside blas.eselect: |
| 23 |
|
| 24 |
# check_* $libdir |
| 25 |
# implementation specific check functions |
| 26 |
check_ACML() { |
| 27 |
# libacml.so provides C/C++ and FORTRAN 77 support |
| 28 |
[[ -f ${1}/libacml.so ]] && echo "C F77" |
| 29 |
} |
| 30 |
[snip] |
| 31 |
# is_active_* $lib |
| 32 |
# return 0 if $lib points to an active BLAS implementation of profile * |
| 33 |
is_active_ACML() { |
| 34 |
[[ -L ${1} ]] || return 1 |
| 35 |
local lib=$(readlink -sn ${1}) |
| 36 |
[[ $(basename ${lib}) == libacml.so ]] \ |
| 37 |
&& return 0 |
| 38 |
return 1 |
| 39 |
} |
| 40 |
# setup_* $libdir $profile |
| 41 |
# Implementation specific activation/setup functions |
| 42 |
setup_ACML() { |
| 43 |
if [[ ${2} == C ]] ; then |
| 44 |
ln -sf ${1}/libacml.so ${1}/libcblas.so |
| 45 |
ln -sf ${1}/libacml.so ${1}/libcblas.so.0 |
| 46 |
ln -sf ${1}/libacml.a ${1}/libcblas.a |
| 47 |
elif [[ ${2} == F77 ]] ; then |
| 48 |
ln -sf ${1}/libacml.so ${1}/libblas.so |
| 49 |
ln -sf ${1}/libacml.so ${1}/libblas.so.0 |
| 50 |
ln -sf ${1}/libacml.a ${1}/libblas.a |
| 51 |
else |
| 52 |
die "Illegal profile: ${2}" |
| 53 |
fi |
| 54 |
} |
| 55 |
|
| 56 |
The eselect modules currently include all features (beside support for |
| 57 |
threaded-atlas) that blas-config and lapack-config provide. Further, the |
| 58 |
eselect modules are prepard for BLAS/LAPACK implementations in other |
| 59 |
programming languages (think of a FORTRAN 90/95 only implementation). |
| 60 |
|
| 61 |
If nobody objects, I'd like to move all packages in the tree to PDEPEND |
| 62 |
on eselect instead of {R}DEPENDing on {blas,lapack}-config. |
| 63 |
|
| 64 |
Danny |
| 65 |
|
| 66 |
[1] http://www.gentoo.org/proj/en/eselect |
| 67 |
- -- |
| 68 |
Danny van Dyk <kugelfang@g.o> |
| 69 |
Gentoo/AMD64 Project, Gentoo Scientific Project |
| 70 |
-----BEGIN PGP SIGNATURE----- |
| 71 |
Version: GnuPG v1.4.1 (GNU/Linux) |
| 72 |
|
| 73 |
iD8DBQFDFiDIaVNL8NrtU6IRAubtAJ9fHKroXyBuGPno7R/4FBycAirorwCdGi/5 |
| 74 |
S6ZvAlZVRfVQrOkj0ehsNF0= |
| 75 |
=1dNv |
| 76 |
-----END PGP SIGNATURE----- |
| 77 |
-- |
| 78 |
gentoo-science@g.o mailing list |
Archives