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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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libopenblas for travis-ci: mixing blas,lapack,atlas,openblas

I have the travis-ci testing script where one have to install system blas+lapack, atlas and openblas: libblas-dev, liblapack-dev, libatlas-base-dev, libopenblas-base , libopenblas-dev All mentioned packages are not working at once; bringing in the…
Miro Iliaš
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How to build Armadillo C++ lib to statically link to OpenBLAS in non-standard location

I am trying to build Armadillo C++ library (version 6.6) and it does build fine. My problem, however, is that I have separately downloaded the source code for OpenBLAS and built that. I want Armadillo to use the OpenBLAS that I built locally, and…
Dan S
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(C++) How to use OpenBlas libraries with C++?

Sorry if this all seems too simple but I'm a beginner and I'm trying to use the OpenBlas libraries in my C++ IDE "CodeBlocks" on Windows. More specifically, I'm want to use the matrix-vector multiplication and solving of a tri-diagonal matrix system…
Tim
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OpenBLAS, ‘cblas_zdotc’ not declared?

I am working on a code for a c++ assignment. I am new to the OpenBlas library and would like some guidance on how to apply it. I checked the relevant documentation (https://software.intel.com/en-us/node/520736#A2C46A8C-343B-401D-88B6-9A6B88A4FA47)…
MrSwordFish
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Asking for the OpenBLAS installation

I was going to install the OpenBLAS on Mac OS but seems failed at the end. First I downloaded the source and extracted that and then input the 'make' commands on terminal. However, I cannot run 'make install' after it, where it shows make: *** No…
user3217504
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Openblas cblas segmentation fault on non square matrix

I'm having trouble running an openblas cblas test program. My Cblas runs perfectly when multiplying square matrixes, but when I try it with non square matrixes, I get the error "segmentation fault - core dumped" I checked and rechecked dimension…
Dimitri BOUCHE
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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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Ubuntu (percise): libopenblas-dev not available (Chromebook/Crouton)

Laptop: Asus C100P Chromebook OS: CromeOS with Crouton (chroot) Ubuntu Percise Ver 12.04.5 LTS Trying to set up my Python environment with Numpy and Theano. sudo apt-get install libopenblas-dev output Reading Package lists... Done Building…
user2255757
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Linking OpenBLAS and Armadillo with CodeBlocks project

I am using Armadillo along with OpenBLAS for linear algebraic operations. For a sample code I am linking these libraries using following commands: g++ sample.cpp -I "path\armadillo\include" -I "path\OpenBLAS\include" -L "path\OpenBLAS\lib"…
Swati45
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Why OpenBLAS Lapack not Available in Theano Windows?

I'm using Windows 10 64bit, and already installed theano. I've downloaded OpenBLAS from: http://sourceforge.net/projects/openblas/files/v0.2.15/OpenBLAS-v0.2.15-Win64-int32.zip/download and put libopenblas.dll in C:\openblas and other dll file from…
malioboro
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Armadillo + OpenBLAS multi-threading

I have successfully used Armadillo coupled with OpenBLAS in master's thesis on Ubuntu 14.04 64bit (both with Armadillo installed and without installation). The performance was very impressive - my code consisted mainly from basic matrix operations.…
Jan91
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linking ipopt against openblas

Currently, I am trying to build Ipopt linking against openblas. I downloaded the openblas source and did make in the parent directory. The configure script of Ipopt has several options to link against blas: I tried ./configure…
Moritz
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SuperLU with OpenBLAS: undefined reference to `pthread_atfork'

When compiling the SuperLU 4.3 library using OpenBLAS instead of regular BLAS distributions, this error keeps coming up: >gcc cdrive.o sp_cconvert.o cgst01.o cgst02.o cgst04.o cgst07.o sp_ienv.o \ > libtmglib.a /a/location/lib/libsuperlu_4.3.a…
Dan
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OpenBLAS crash on Windows

I'm working with OpenBLAS on Windows and am experiencing crashes. I'm using test code bellow (entire program), taken from Intel MKL from here (I slightly modified it). The same problem is with other function calls. With step by step debugging, the…
Jaka Konda
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Building OpenBlas with msys2

I have a windows 7-64bit computer and I am trying to build OpenBlas library through Msys2. There seems to be some problem with the gcc as after installing minGW and unziped OpenBlas folder, I open msys2 and I navigate to the folder where OpenBlas is…
Danai Tri
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