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Package Details: atlas-lapack 1:3.10.3-9

Package Actions

Git Clone URL:	https://aur.archlinux.org/atlas-lapack.git (read-only, click to copy)
Package Base:	atlas-lapack
Description:	Automatically Tuned Linear Algebra Software
Upstream URL:	http://math-atlas.sourceforge.net
Licenses:	BSD, custom:lapack
Provides:	atlas-lapack-base, blas, cblas, lapack
Submitter:	ilpianista
Maintainer:	henkm
Last Packager:	henkm
Votes:	93
Popularity:	0.000050
First Submitted:	2008-04-24 01:36 (UTC)
Last Updated:	2024-02-01 12:28 (UTC)

Dependencies (2)

gcc-libs (gcc-libs-git^AUR, gccrs-libs-git^AUR, gcc11-libs^AUR, gcc-libs-snapshot^AUR)
gcc-fortran (gcc-fortran-git^AUR, gcc11-fortran^AUR, gcc-fortran-snapshot^AUR) (make)

Required by (550)

abinit (requires blas)
abinit (requires lapack)
algodoo (requires lapack)
ambertools (requires blas)
ambertools (requires lapack)
amino-git (requires cblas)
amino-git (requires lapack)
apbs (requires blas)
apbs (requires lapack)
armadillo (requires blas)
armadillo (requires lapack)
arpack++ (requires blas)
arpack++ (requires lapack)
arpack-git (requires lapack)
arrayfire-git (requires cblas)
atompaw (requires lapack)
atomsk-git (requires blas)
atomsk-git (requires lapack)
avs-device-sdk (requires cblas)
basix (requires lapack)
basix-git (requires blas)
basix-git (requires lapack)
bayestraits (requires cblas)
bayestraits-mpi (requires cblas)
bergamont-marian-git (requires cblas) (make)
bergamont-marian-git (requires lapack) (make)
blaze-git (requires blas) (make)
blaze-git (requires blas) (optional)
blaze-git (requires lapack) (make)
blaze-git (requires lapack) (optional)
blazert (requires blas) (make)
blazert (requires lapack) (make)
blazert-git (requires blas) (make)
blazert-git (requires lapack) (make)
boltztrap (requires lapack)
caffe (requires lapack)
caffe (requires lapack) (make)
caffe-cuda (requires lapack)
caffe-cuda (requires lapack) (make)
caffe-cuda-doc (requires lapack) (make)
caffe-cuda-doc-git (requires lapack) (make)
caffe-cuda-git (requires lapack)
caffe-cuda-git (requires lapack) (make)
caffe-doc (requires lapack) (make)
caffe-doc-git (requires lapack) (make)
caffe-git (requires lapack)
caffe-git (requires lapack) (make)
caffe-ssd (requires lapack)
calculix-ccx (requires blas)
casacore-git (requires lapack)
casadi (requires lapack)
casadi-git (requires lapack)
ccv (requires blas)
cernlib (requires blas)
cernlib (requires lapack)
chronoengine (requires blas)
chronoengine (requires blas) (make)
chronoengine-git (requires blas)
chronoengine-git (requires blas) (make)
cminpack (requires cblas)
cnmatrix (requires cblas)
coin-or-coinmumps (requires lapack)
coin-or-couenne (requires lapack)
coin-or-ipopt (requires lapack)
coin-or-qpoases (requires blas)
coin-or-qpoases (requires lapack)
control-toolbox-core (requires lapack)
cosma (requires cblas)
dakota (requires lapack)
deal-ii (requires lapack) (optional)
deepmatching (requires cblas) (make)
dftd4 (requires lapack)
dftd4-git (requires lapack)
dlib (requires blas)
dlib (requires cblas)
dlib (requires lapack)
dlib-cuda (requires blas)
dlib-cuda (requires cblas)
dlib-cuda (requires lapack)
dlib-git (requires cblas) (optional)
dlib-git (requires lapack) (optional)
dsd-fme (requires blas)
dsd-fme (requires lapack)
dsd-fme-git (requires blas)
dsd-fme-git (requires lapack)
dseams-git (requires blas) (make)
dseams-git (requires lapack) (make)
dune-common (requires lapack)
dynare (requires blas)
elemental (requires lapack)
elemental-gmp-git (requires lapack)
elmerfem (requires blas)
ensmallen (requires lapack) (make)
faiss-cpu (requires blas)
faiss-cpu (requires lapack)
faiss-cuda (requires blas)
faiss-cuda (requires lapack)
faiss-cuda-git (requires blas)
faiss-cuda-git (requires lapack)
faiss-git (requires blas)
faiss-git (requires lapack)
flatter-git (requires lapack)
fleur-develop (requires blas) (make)
fleur-develop (requires lapack) (make)
freefem (requires cblas) (optional)
freefem (requires lapack) (optional)
funkcio (requires lapack)
funkcio-git (requires lapack)
fxt (requires blas)
gamess (requires blas)
gamess (requires lapack)
gbtolib (requires blas)
gbtolib (requires lapack)
getdp (requires lapack) (make)
gimp-plugin-registry (requires lapack)
gmsh (requires lapack)
gmsh (requires lapack) (make)
gmsh-docs (requires lapack) (make)
gmsh-git (requires lapack)
gmsh-git (requires lapack) (make)
gmsh-git-docs (requires lapack) (make)
gnss-sdr-git (requires blas)
gnss-sdr-git (requires lapack)
gnuradio-git (requires blas)
gpvdm-git (requires blas)
graspit (requires lapack)
gretl (requires blas)
gretl (requires lapack)
gromacs (requires lapack)
gromacs-2020-complete (requires lapack)
gromacs-plumed (requires lapack)
groops-git (requires lapack)
gsim (requires cblas)
gsim (requires lapack)
harminv (requires lapack)
harminv-git (requires lapack)
haskell-hmatrix (requires blas)
haskell-hmatrix (requires lapack)
hmat-oss (requires cblas)
home-assistant-git (requires lapack)
hugin-hg (requires lapack)
ifd (requires lapack)
itpp (requires blas)
itpp (requires lapack)
j9-git (requires lapack) (optional)
j901-bin (requires lapack) (optional)
jags (requires lapack)
jags (requires lapack) (make)
jules-git (requires cblas) (optional)
kaldi (requires cblas)
kaldi (requires lapack)
koboldcpp (requires cblas)
koboldcpp-cuda (requires cblas)
koboldcpp-hipblas (requires cblas)
l1_logreg (requires blas)
l1_logreg (requires blas) (make)
l1_logreg (requires lapack)
l1_logreg (requires lapack) (make)
l1_logreg-docs (requires blas) (make)
l1_logreg-docs (requires lapack) (make)
labplot-git (requires cblas)
lapack-git (requires blas)
lapacke-git (requires lapack)
levmar (requires lapack)
lib32-blas (requires blas)
lib32-cblas (requires cblas)
lib32-lapack (requires lapack)
libcint (requires blas)
libcint-cint3 (requires blas)
libcint-git (requires blas)
libcmatrix-lite (requires cblas) (make)
libdogleg-git (requires lapack)
libdspl (requires blas) (make)
libflame-git (requires blas)
libflame-git (requires lapack) (optional)
libsurvive (requires cblas)
libxsmm (requires blas) (check)
libxsmm (requires lapack) (check)
lpp (requires lapack)
lush (requires lapack) (optional)
macaulay2 (requires cblas)
macaulay2 (requires lapack)
madagascar (requires cblas)
madagascar-git (requires cblas)
madx-dev (requires lapack)
madx-git (requires lapack)
mbdyn-git (requires lapack) (optional)
minc-toolkit-v2 (requires blas)
minc-toolkit-v2 (requires cblas)
mlpack (requires lapack)
moab (requires blas)
moab (requires lapack)
moab-git (requires blas)
moab-git (requires lapack)
mopac (requires blas)
mopac (requires lapack)
mpb (requires lapack)
mpb-git (requires lapack)
mrcpp-git (requires blas)
multinest (requires lapack)
mumps (requires lapack)
mumps-cmake (requires lapack)
mumps-par (requires lapack)
mumps-seq (requires lapack)
mumps-seq-shared (requires blas)
mumps-seq-shared (requires lapack)
mxnet (requires cblas)
mxnet (requires cblas) (make)
mxnet (requires lapack)
mxnet (requires lapack) (make)
mxnet-cuda (requires cblas)
mxnet-cuda (requires cblas) (make)
mxnet-cuda (requires lapack)
mxnet-cuda (requires lapack) (make)
mxnet-mkl (requires cblas) (make)
mxnet-mkl (requires lapack) (make)
mxnet-mkl-cuda (requires cblas) (make)
mxnet-mkl-cuda (requires lapack) (make)
nceplibs-ip (requires lapack)
nco (requires cblas)
nelson-git (requires blas)
nelson-git (requires lapack)
nest (requires cblas)
ngsolve-git (requires blas)
ngsolve-git (requires lapack)
nwchem-bin (requires lapack)
nwchem-git (requires lapack) (make)
octave-ltfat (requires blas) (make)
octave-ltfat (requires lapack) (make)
oof2 (requires lapack)
opencl-amd-dev (requires blas)
opencl-amd-dev (requires lapack)
opencv-git (requires cblas)
opencv-git (requires lapack)
opencv3-opt (requires cblas)
opencv3-opt (requires lapack)
openmodelica (requires lapack)
openmodelica-git (requires lapack)
openmodelica-omc (requires lapack)
openmvs (requires blas)
openmvs-git (requires blas)
openroad-git (requires blas)
opentoonz-git (requires blas)
opentoonz-git (requires cblas)
openvsp (requires cblas)
openvsp-git (requires cblas)
optizelle (requires lapack)
orfeo-toolbox (requires cblas)
orfeo-toolbox (requires lapack)
pastix (requires cblas)
perl-rna (requires blas) (make)
perl-rna (requires lapack) (make)
petsc (requires lapack)
petsc-complex (requires lapack)
petsc-git (requires lapack)
phoronix-test-suite (requires blas) (optional)
phoronix-test-suite (requires lapack) (optional)
phoronix-test-suite-git (requires blas) (optional)
phoronix-test-suite-git (requires lapack) (optional)
photospline (requires blas)
photospline (requires lapack)
photoview (requires blas)
photoview (requires cblas)
photoview (requires lapack)
php-pdlib (requires cblas)
php-pdlib (requires lapack)
php74-pdlib (requires blas)
php74-pdlib (requires cblas)
php74-pdlib (requires lapack)
plask-bin (requires lapack)
plask-git (requires lapack)
plink (requires lapack)
plink1.9-git (requires cblas)
plink1.9-git (requires lapack)
plumed (requires lapack)
plumed-mpi (requires lapack)
pqr (requires blas)
pqr (requires lapack)
psi3-bin (requires lapack)
psi4 (requires blas)
psi4 (requires lapack)
psi4-git (requires blas)
psi4-git (requires lapack)
psi4-git-gccmkl (requires blas)
psi4-git-gccmkl (requires lapack)
pypy3-numpy (requires cblas)
pypy3-numpy (requires lapack)
python-assimulo (requires lapack)
python-casadi-bin (requires lapack)
python-dlib (requires cblas)
python-dlib (requires lapack)
python-dlib-cuda (requires cblas)
python-dlib-cuda (requires lapack)
python-dlib-cuda-git (requires cblas)
python-dlib-cuda-git (requires lapack)
python-dlib-git (requires cblas)
python-dlib-git (requires lapack)
python-kwant (requires blas)
python-kwant (requires lapack)
python-kwant-git (requires blas)
python-kwant-git (requires lapack)
python-minkowskiengine (requires cblas)
python-minkowskiengine-git (requires cblas)
python-numpy-flame (requires cblas)
python-numpy-git (requires cblas)
python-numpy-git (requires lapack)
python-numpy1 (requires cblas)
python-numpy1 (requires lapack)
python-paddlepaddle (requires blas)
python-paddlepaddle-cuda (requires blas)
python-paddlepaddle-cuda-git (requires blas)
python-paddlepaddle-git (requires blas)
python-pydistmesh (requires blas)
python-pyfr (requires cblas) (optional)
python-pyfr-git (requires cblas) (optional)
python-pyscf (requires blas)
python-rna (requires blas) (make)
python-rna (requires lapack) (make)
python-shtools (requires blas)
python-shtools (requires lapack)
python-slycot (requires blas) (make)
python-slycot (requires lapack) (make)
python2-numpy (requires cblas)
python2-numpy (requires lapack)
qtltools (requires cblas)
r-amountain (requires cblas)
r-aws (requires blas)
r-aws (requires lapack)
r-bamlss (requires blas)
r-bamlss (requires lapack)
r-bandle (requires blas)
r-bandle (requires lapack)
r-bayesm (requires blas)
r-bayesm (requires lapack)
r-bdmmacorrect (requires blas)
r-bnlearn (requires blas)
r-bnlearn (requires lapack)
r-brisc (requires blas)
r-brisc (requires lapack)
r-bssm (requires blas)
r-bssm (requires lapack)
r-ccimpute (requires blas)
r-clarabel (requires blas)
r-clarabel (requires lapack)
r-clustercrit (requires lapack)
r-clusterr (requires blas)
r-compositions (requires blas)
r-compositions (requires lapack)
r-conos (requires blas)
r-conos (requires lapack)
r-coop (requires blas)
r-coop (requires lapack)
r-cplm (requires blas)
r-cplm (requires lapack)
r-cytolib (requires lapack)
r-degnorm (requires blas)
r-densestbayes (requires blas)
r-deprecated-215 (requires blas)
r-deprecated-215 (requires lapack)
r-desolve (requires blas)
r-devel-svn (requires blas)
r-devel-svn (requires lapack)
r-diagis (requires blas)
r-differentialregulation (requires blas)
r-differentialregulation (requires lapack)
r-edger (requires blas)
r-edger (requires lapack)
r-epistasisga (requires blas)
r-epistasisga (requires lapack)
r-fastghquad (requires lapack)
r-fastica (requires blas)
r-fastica (requires lapack)
r-float (requires blas)
r-float (requires lapack)
r-fracdiff (requires blas)
r-gee (requires blas)
r-geigen (requires blas)
r-geigen (requires lapack)
r-gensa (requires blas)
r-ggsc (requires blas)
r-gnm (requires blas)
r-gss (requires blas)
r-gss (requires lapack)
r-harmony (requires blas)
r-harmony (requires lapack)
r-iclusterplus (requires blas)
r-iclusterplus (requires lapack)
r-igraph (requires blas)
r-igraph (requires lapack)
r-irlba (requires blas)
r-irlba (requires lapack)
r-kernelknn (requires blas)
r-kernelknn (requires lapack)
r-kernlab (requires blas)
r-kernlab (requires lapack)
r-lea (requires lapack)
r-lemur (requires blas)
r-lfa (requires blas)
r-lfa (requires lapack)
r-libcoin (requires lapack)
r-limsolve (requires blas)
r-logspline (requires blas)
r-maptpx (requires blas)
r-maptpx (requires lapack)
r-mashr (requires blas)
r-mashr (requires lapack)
r-mclust (requires blas)
r-mclust (requires lapack)
r-milor (requires blas)
r-milor (requires lapack)
r-minpack.lm (requires blas)
r-mnp (requires lapack)
r-msgps (requires blas)
r-msm (requires blas)
r-msm (requires lapack)
r-msstats (requires blas)
r-multitaper (requires lapack)
r-mvnfast (requires blas)
r-mvnfast (requires lapack)
r-mvtnorm (requires blas)
r-mvtnorm (requires lapack)
r-networkbma (requires lapack)
r-nleqslv (requires blas)
r-nleqslv (requires lapack)
r-outrider (requires blas)
r-paralleldist (requires blas)
r-paralleldist (requires lapack)
r-pcal1 (requires blas)
r-pcal1 (requires lapack)
r-pcalg (requires blas)
r-pcalg (requires lapack)
r-pcapp (requires blas)
r-pcapp (requires lapack)
r-polspline (requires blas)
r-preprocesscore (requires lapack)
r-primme (requires blas)
r-primme (requires lapack)
r-proxyc (requires blas)
r-qtl (requires blas)
r-qtl (requires lapack)
r-quadprog (requires blas)
r-quantreg (requires blas)
r-quantreg (requires lapack)
r-ramcmc (requires blas)
r-rcsdp (requires blas)
r-rcsdp (requires lapack)
r-rdist (requires blas)
r-regsem (requires blas)
r-regsem (requires lapack)
r-revdbayes (requires lapack)
r-rfast (requires blas)
r-rfast (requires lapack)
r-robustbase (requires blas)
r-robustbase (requires lapack)
r-rspectral (requires blas)
r-rspectral (requires lapack)
r-rstpm2 (requires blas)
r-rstpm2 (requires lapack)
r-rust (requires blas)
r-rust (requires lapack)
r-saigegds (requires blas)
r-saigegds (requires lapack)
r-scgps (requires blas)
r-scgps (requires lapack)
r-scoringrules (requires blas)
r-scoringrules (requires lapack)
r-scs (requires blas)
r-scs (requires lapack)
r-slam (requires blas)
r-spam (requires blas)
r-spam (requires lapack)
r-svd (requires blas)
r-svd (requires lapack)
r-tmb (requires blas)
r-tmb (requires lapack)
r-truncatednormal (requires blas)
r-truncatednormal (requires lapack)
r-ucminf (requires blas)
r-vegan (requires lapack)
r352 (requires blas)
r352 (requires lapack)
radiosonde_auto_rx (requires lapack)
rlftlbx (requires blas)
rlftlbx (requires lapack)
ros2-humble-slam-toolbox (requires lapack)
sagecal (requires lapack) (make)
sagecal-git (requires lapack) (make)
sagecal-gpu (requires lapack) (make)
sagemath-git (requires cblas)
scalapack (requires blas)
scalapack (requires lapack)
shark-ml-atlas-git
shengbte (requires lapack)
shtools (requires blas)
shtools (requires lapack)
simbody (requires blas)
simbody (requires lapack)
slatec (requires lapack)
sparselizard (requires cblas)
sphinxdft (requires cblas)
spla (requires cblas)
spral (requires lapack)
starpu (requires blas)
subtitlecomposer (requires blas) (make)
subtitlecomposer-git (requires blas) (make)
superlu_dist (requires lapack)
superlu_mt (requires blas)
tahoma2d (requires cblas)
tahoma2d-git (requires cblas)
tarquin (requires lapack)
tasmanian (requires lapack)
tfi (requires blas)
tfi (requires cblas)
tfi (requires lapack)
torch7-git (requires blas)
torch7-git (requires lapack)
treekin (requires blas)
treekin (requires lapack)
trilinos (requires blas) (make)
trilinos (requires lapack)
trilinos-git (requires blas) (make)
trilinos-git (requires lapack)
trlan (requires lapack)
trlib-git (requires lapack)
txm-bin (requires blas)
txm-bin (requires lapack)
ukrmol-in (requires blas)
ukrmol-in (requires lapack)
ukrmol-out (requires blas)
ukrmol-out (requires lapack)
viennarna (requires blas)
viennarna (requires blas) (make)
viennarna (requires lapack)
viennarna (requires lapack) (make)
visp (requires lapack) (optional)
visual-sfm (requires blas)
visual-sfm (requires lapack)
vokey-git (requires blas)
vokey-git (requires lapack)
wannier90 (requires blas)
wannier90 (requires lapack)
xkblas (requires blas)
xtb-git (requires lapack)
xtensor-blas (requires blas)
xtensor-blas (requires lapack)
yaehmop (requires blas)
yaehmop (requires lapack)
zeno (requires lapack)
zw3d-bin (requires blas)
zw3d-bin (requires lapack)

Sources (4)

Pinned Comments

phcerdan commented on 2017-06-08 06:48 (UTC) (edited on 2017-06-08 06:49 (UTC) by phcerdan)

Hey I just installed, and make these notes, that might be useful for somebody else: Good explanation in atlas site: http://math-atlas.sourceforge.net/atlas_install/node5.html Follow this, the governor set by cpupower knows shit about CPU without this: http://unix.stackexchange.com/questions/121410/setting-cpu-governor-to-on-demand-or-conservative Summary: http://vincent.jousse.org/tech/archlinux-compile-lapack-atlas-kaldi/ ===========Steps=========== Permanent disable intel_pstate: Edit: /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=disable" and update grub: grub-mkconfig -o /boot/grub/grub.cfg And then enable acpi-cpufreq module: su root echo "acpi-cpufreq" > /etc/modules-load.d/acpi-cpufreq.conf restart. Now cpupower can set frequencies properly. To disable throtling sudo pacman -S cpupower sudo cpupower frequency-set -g performance It should apply to all cores, but if it only apply to the first one: copy files to the other (4 in laptop) sudo cp /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor To restore: sudo cpupower frequency-set -g ondemand If not all cores are set: sudo cp /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor This stuff is only required at build time.

Latest Comments

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epitron commented on 2015-09-10 03:15 (UTC)

Strange issue: when the `afl` package is installed, ATLAS tries to use `afl-gcc` instead of `gcc`. I skimmed the configure script and the Makefile, and there doesn't seem to be anywhere it's searching for an alternative gcc executable. Passing congfigure the `--cc=gcc` option, or setting the CC environment variable to `CC=gcc` both have no effect. The simplest solution is to remove the `afl` package when you're building ATLAS. Does anyone have a better solution?

Chais commented on 2015-05-04 18:23 (UTC)

This seems to be missing most of the headers. All the libs are there, but only cblas.h and clapack.h are in /usr/include.

giniu commented on 2015-04-29 12:58 (UTC)

Then maybe you have small amount of /tmp size on tmpfs? Most AUR helpers build in /tmp, so sometimes they get stuck when you run out of /tmp space.

mutor commented on 2015-04-29 12:54 (UTC)

Hey giniu, this week I tried to install it using simple pkgbuild method, it has worked. earlier I was using AURA, that had failed couple of times.

giniu commented on 2015-04-24 09:14 (UTC)

it takes well too long. Can you somehow pass me the file that is mentioned in this log? I.e. error_<ARCH>.tgz - there are all informations about how configure went and what decisions were taken during build, so it would help a lot.

mutor commented on 2015-04-24 08:55 (UTC)

Build is failing for gcc 4.9.2, and is it supposed to take 7 hours? my CPU is AMD 8350 8-core. Log is following: gcc version 4.9.2 20150304 (prerelease) (GCC) /usr/bin/x86_64-unknown-linux-gnu-gcc-4.9.2 -V 2>&1 >> bin/INSTALL_LOG/ERROR.LOG x86_64-unknown-linux-gnu-gcc-4.9.2: error: unrecognized command line option ‘-V’ x86_64-unknown-linux-gnu-gcc-4.9.2: fatal error: no input files compilation terminated. Make.top:4: recipe for target 'error_report' failed make[4]: [error_report] Error 1 (ignored) /usr/bin/x86_64-unknown-linux-gnu-gcc-4.9.2 --version 2>&1 >> bin/INSTALL_LOG/ERROR.LOG tar cf error_AMDDRIVER64AVXMAC.tar Make.inc bin/INSTALL_LOG/* bzip2 error_AMDDRIVER64AVXMAC.tar make[4]: Leaving directory '/var/cache/pacman/pkg/atlas-lapack2194/atlas-lapack/src/ATLAS/build' make[3]: Leaving directory '/var/cache/pacman/pkg/atlas-lapack2194/atlas-lapack/src/ATLAS/build' make[2]: Leaving directory '/var/cache/pacman/pkg/atlas-lapack2194/atlas-lapack/src/ATLAS/build/bin' Error report error_<ARCH>.tgz has been created in your top-level ATLAS directory. Be sure to include this file in any help request. cat: ../../CONFIG/error.txt: No such file or directory cat: ../../CONFIG/error.txt: No such file or directory Make.top:15: recipe for target 'build' failed make[1]: *** [build] Error 255 make[1]: Leaving directory '/var/cache/pacman/pkg/atlas-lapack2194/atlas-lapack/src/ATLAS/build' Makefile:488: recipe for target 'build' failed make: *** [build] Error 2

arojas commented on 2013-11-11 07:57 (UTC)

The build failure should be fixed with glibc 2.18-10

kyak commented on 2013-10-04 20:18 (UTC)

@Marbur thanks, adding "-D c -DWALL" only in PKGBUILD made it work for me!

MarBur commented on 2013-10-04 19:57 (UTC)

On further checking downgrading gcc isn't necessary. Try first with only -D c -DWALL without pstate change or anything it might work. I used pstate because I needed atlas badly and didn't have time to figure out all combinations of working and non-working. And changing kernel cmdline is 2 minute work and one restart. Maybe if you can turn off power sawing this isn't necessary but my frequency kept changing no matter what I did.