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Questions tagged [openblas]

Questions regarding OpenBLAS, an open source library that implements BLAS API and has hand-crafted optimizations for specific processor types.

OpenBLAS is an open source implementation of BLAS, the Basic Linear Algebra Subprograms library, optimized for high performance on multi-core x86-64 processors. It was forked from the GotoBLAS2-1.13 BSD version and was tuned to have performance similar to Intel MKL.

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Error : Numpy OpenBLAS flavour is needed for this scipy build. (Although I have directly saved its files in lib->site packages folder)

I have installed sklearn, numpy and matplotlib but, I am unable to properly install openBLAS although I have directly save dopenBLAS files in lib folder(site packages) but still its showing an error...kindly help me to make execute this small part…
Ayush Sharma
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Anaconda R seemingly cannot use OpenBLAS. Only MKL? Why?

Main Question (#1): Is there a secret trick to get anaconda R in particular (not other R please, there is no problem with other R) to use the resident BLAS subsystem on Ubuntu? Other numerical apps (Octave) on same host are demonstrating BLAS…
Geoffrey Anderson
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How can i install OpenBLAS and numpy on windows10 and anaconda?

There are so many guide of install openBLAS for linux, So I want to know how can i install openBLAS on windows10 with anaconda3.
JaeWoo So
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I can't install libopenblas via yum on Centos 7

Hello Stackoverflow user, I want to compile NWChem program on CentOS 7 and it requires an OpenBlas library. I have tried to install the OpenBlas via yum installer using command: yum -y install libopenblas or yum -y install…
High Performance Rangsiman
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How can I use all of my Amazon EC2 cores to carry out a parallel simulation in R?

I would like to run 1000 iterations of a simulation in R. Each iteration takes 20 seconds which would take ~6 hours in serial. And I have several dozen simulations to run, each with 1000 iterations. So I want to use parallel computing to accomplish…
Mark B.
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C++ - Why is conv2 so slow in Armadillo?

I am using conv2 function in armadillo with image size of 224x224 and mask size of 10x10. For a 3 channel image, I am doing something like: arma::mat temp(215, 215, fill::zeros); for (int i = 0; i < 3; i++) temp +=…
Shubham Gupta
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Try to compile numpy against openblas in Yosemite but otool shows that my build is linked with apple's Accelerate Framework

OS: yosemite 10.10.5 using virtualenv, .bashrc/.bash_profile/.profile all empty i have install openblas simply using "make && make PREFIX=/usr/local/opt/openblas install", that means it was installed in /usr/local/opt/openblas CUDA and CuDNN…
Dreamie Dreamer
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Install numpy on server

I have a shared server on namecheap. Baiscally I am need to run a script on it. (I need to call that using android,that's second part.) What I did was to install miniconda on my server. If i execute conda list , I get the…
driftking9987
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How to make openBLAS work with openMP?

I got tons of warning from openBLAS like OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option. OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild…
Eric
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What is Armadillo+Atlas , Armadillo+OpenBLAS, Armadillo+uBLAS, Armadillo+MKL?

In many website they talk about Armadillo+something else. What do they mean? I use Armadillo library in form of #include in Linux environment. In this website http://nghiaho.com/?p=1726 Armadillo+OpenBLAS is mentioned. What do they…
ar2015
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No _dotblas.so after installing OpenBLAS and Numpy

I'm trying to speed up matrix operations using NumPy in Ubuntu 14.04 LTS (64-bit). Instead of using ATLAS (actually when I use ATLAS, there is only 1 thread which is fully running, with 7 other opened threads doing nothing, even if I specify…
mintaka
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Can't install scipy (/numpy) with OpenBLAS on Ubuntu 14.04

I'm trying to install Numpy and Scipy with OpenBLAS on Ubuntu 14.04 to run Theano faster. I followed the instructions I found here: git clone https://github.com/xianyi/OpenBLAS cd OpenBLAS make FC=gfortran sudo make PREFIX=/opt/openblas…
user3431929
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What do I need to install to have numpy do matix multiplication on multiple threads?

Here are things that might be relevant though I'm not sure how exactly. Not sure how to interpret the ldd outputs but people keep referencing them in answers so here they are: ldd /usr/lib/libopenblas.so linux-vdso.so.1 => (0x00007fffe23fe000) …
evan54
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swig with openmp and python, does swig -threads need extra GIL handling?

I have my C library interfaced with swig. I can compile it with my setup.py. Here the extension section: surf_int_lib = Extension("_surf_int_lib", ["surf_int_lib.i", "surf_int_lib.c"], …
Bort
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Multi-threaded linear system solution in OpenBLAS

I have a code using Fortran 95 and the gfortran compiler. I am also using OpenMP and I have to handle very big arrays. In my code I also have to solve a system of linear equations using the solver DGTSV from OpenBLAS. I want to parallelize this…
user1548953
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