similar to: parallel BLAS for Ubuntu 11.10

Of course, even a simpler trick is to launch R as follows: LD_PRELOAD=/lib64/atlas/libsatlas.so.3 R and then the symbols in libsatlas take precedence over libopenblas. Or a mix between both alternatives, i.e., setting LD_PRELOAD=/path/to/some/link R and then change that link to point to openblas, atlas... Whatever suits you best. I?aki On Wed, 27 May 2020 at 11:00, I?aki Ucar <iucar at

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

On 02/08/16 03:10, Ei-ji Nakama wrote: > 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. > Thanks for the response. This works fine for R run from the command line (as does setting the same

Hi, I was be half asleep in the heat ... 2016-08-04 0:04 GMT+09:00 Dirk Eddelbuettel <edd at debian.org>: > > On 3 August 2016 at 16:45, Gordon Ball wrote: > | On 02/08/16 03:10, Ei-ji Nakama wrote: > | > Hi, > | > > | > Create /etc/profile.d/openblas.sh. > | > Write the following during in this file. > | > OPENBLAS_NUM_THREADS = 1 > | > export

Hi, Since upgrading to version 2.11.0~20100402-1, starting R fails with: /usr/lib64/R/bin/exec/R: error while loading shared libraries: libblas.so.3gf: cannot open shared object file: No such file or directory Is this occurring to others on sid? -- Seb

On 15 March 2012 14:09, Simon Urbanek <simon.urbanek@r-project.org> wrote: > I thought I'll post this here since I could not find an answer anywhere I > searched: how to setup R with threaded BLAS on Debian/Ubuntu. > > First, neither Debian nor Ubuntu come with optimized ATLAS binaries, > simply because by definition they need to be optimized for a particular >

I feel like Marlon Brando in "On the Waterfront" where he's told "It's not your night, kid", except for me it has been the last two months trying to debug memory problems. Now I can't even install an old version of this package on a netbook running the Ubuntu 10.10 netbook remix because it can't find the libraries libf77blas and libatlas. I have even gone to

Hi I just read the thread on gotoBLAS, as well as the excellent vignette of gcbd. I still have some confusion and would like to ask very basic questions, hope I am not taking too much of your time. The point that retained my attention was the question of using implicit (multi-threaded blas) versus explicit (parallel code) optimisation. As I understood, the ideal would be to use a

Hi, I'd like to install the optimized libraries on my Thinkpad with an Intel Core Solo chip, which apparently supports the following instruction sets: MMX, SSE, SSE2, SSE3 instruction sets, XD-Bit. In a recent r-help message, the following was said (by Dirk I think): <quote> Yes, on Ubuntu, use 'apt-get install atlas3-base' for basic tuned Atlas, or 'apt-get install

Dear list, What is the recommended incantation on Fedora 32 to swap out the openblas BLAS that the packaged (rpm) version of R-core installs for ATLAS? I'm running into some problems with some big models I want to fit using the mgcv package, and openblas is apparently not thread safe and is causing problems. I have the following installed: $ dnf list installed | grep ^R R-core.x86_64

Emmanuel, On 30 August 2008 at 00:04, Emmanuel Charpentier wrote: | Dear list, | | Setup : Ubuntu Hardy + updates + backports + security + R repository on | a 3.2 GHz PIV dual-core processor. | | Bitten (again...) by the "I'll optimize my setup" bug, I tried to test | atlas. Following Dirk's advice on a not-so-recent post to R-help, I | tried "apt-get install -s

Thanks I?aki, that is exactly what i was looking for, esp the last option which I have now configured as an alias for easy remembering. I can answer the question re USE_LOCKING=1. I think that using both those options is required to get thread-safety even if openblas was compiled for single thread use. I don't know to what extent Simon has engaged with upstream on this etc. All I know is

Hi Gavin, On Wed, 27 May 2020 at 01:15, Gavin Simpson <ucfagls at gmail.com> wrote: > > Dear list, > > What is the recommended incantation on Fedora 32 to swap out the > openblas BLAS that the packaged (rpm) version of R-core installs for > ATLAS? I'm afraid there is no official mechanism in place to do that yet. There was a proposal [1], but it was never pushed

I think the thing that is missing is a simple way for end users on windows to replace blas/lapack libraries with MKL-a package that you install that puts the libraries in the right place. Microsoft provides something for their distro, but we don't have the equivalent if you get R from cran. On 29 October 2017 at 22:01, Kenny Bell wrote: | User here: incorporating Intel's MKL, as MRO

Hello R-sig-debian and (hopefully) Dirk: On Debian wheezy, I have the R packaging that CRAN (you) provide. I run into a little trouble while trying to fiddle with alternative BLAS. I know you and I went around on this last year and I think perhaps I've found something wrong in the framework, or I've just done something wrong. I installed the packages openblas-base and openblas-dev, and

Den 2017-12-01 kl. 20:24, skrev Dirk Eddelbuettel: > > On 1 December 2017 at 19:55, G?ran Brostr?m wrote: > | Hello, > | > | the following is a part of a question asked on R-help. I realized that > | it is better suited for asking here. Apologies for the cross-posting! > | > | I'm on Ubuntu artful, and upgraded with 'apt'. Then > | > |

I'm setting up an Ubuntu?virtual machine?that will use 4-Intel Xeon CPU x5650.? I'd like to compile R with a BLAS but the question is whcih one.? Seems like the only free ones are GotoBLAS which I'm not sure is being maintained for newer CPUs and OpenBLAS for Loongson CPUs.? I saw a favorable report on OpenBLAS

Thanks Keith. We checked, and indeed libopenblas is not linked against libomp nor libgomp. We suspect this is because we used conda to install R and OpenBLAS. So I guess we should be barking up the conda tree instead? By the way, I also noticed on my home machine (Ubuntu), /usr/lib/libopenblas.so.0 is also not linked against those, for what that's worth. Regards, Ben On 01/10/2018 12:04

Hello, This simple SVD calculation (commands are copied immediately below) crashes on my Ubuntu machine (R 2.13.0). However it worked fine with R.12 and Ubuntu 10.04, and it also works fine on my Windows 7 machine with R 2.13, so I suspect there's a problem with (my?) Ubuntu and / or R. I'm using the R distribution that is accessible with Ubuntu's repositories manager, I am not

Dear All, As suggested in the reply from Dirk Eddelbuettel to my post to R-dev I am reposting here as the problem still persists. Please see my post to R-dev under same heading for additional description if needed. In summary I am starting from a new installation of Ubuntu 10.10 as the single operating system on a reformatted disk with just the OS, ESS and emacs installed before installing R