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2016 Aug 01
2
R, OpenBLAS and OMP_NUM_THREEADS
What is the correct way to globally configure R to default to single (or
at least, << NUM_CPUS) threaded operation?
Using R 3.3.1 (both in debian unstable or using the CRAN repository for
xenial) with OpenBLAS (0.2.18) defaults to using one thread per
available CPU, which isn't ideal for machines more than a couple of CPUs.
Setting the environment (OMP_NUM_THREADS or
2016 Aug 02
0
R, OpenBLAS and OMP_NUM_THREEADS
Hi,
Create /etc/profile.d/openblas.sh.
Write the following during in this file.
OPENBLAS_NUM_THREADS = 1
export OPENBLAS_NUM_THREADS
OPENBLAS_NUM_THREADS environment variable does not affect the OMP_NUM_THREADS.
2016-08-01 20:06 GMT+09:00 Gordon Ball <gordon at chronitis.net>:
> What is the correct way to globally configure R to default to single (or
> at least, << NUM_CPUS) threaded operation?
>
>
> Using R 3.3.1 (both in debian unstable or using the CRAN repository for
> xenial) with OpenBLAS (0.2.18) defaults to using one thread per
&...
2016 Aug 03
2
R, OpenBLAS and OMP_NUM_THREADS
...y=TRUE)) blas_set_num_threads(1)
})
which does mean people get this library loaded in all their sessions but
that doesn't seem to cause any particular trouble (yet).
Gordon
[1]: docs.rstudio.com/ide/server-pro/r-sessions.html
>
> 2016-08-01 20:06 GMT+09:00 Gordon Ball <gordon at chronitis.net>:
>> What is the correct way to globally configure R to default to single (or
>> at least, << NUM_CPUS) threaded operation?
>>
>>
>> Using R 3.3.1 (both in debian unstable or using the CRAN repository for
>> xenial) with OpenBLAS (0.2.18) defaults t...