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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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Why is Julia asking for AVX instructions on Ubuntu 14.04?

On my Ubuntu 14.04 box, Julia is complaining that my machine doesn't support AVX instructions. What may be the reason for this?
Naren Yellavula
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GLPK OpenBLAS runtime dll link error

I have a program written using Armadillo C++ linked to OpenBLAS and also GLPK. It compiles and links properly in both Debug and Release under VS2010 using identical libraries. It runs perfectly in Debug, just slowly. The Release binary emits the…
lsdavies
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Can't disable Armadillo Wrapper During Compilation/Linking

I am trying to compile the Armadillo C++ Library under Windows 32 using MinGW32 and OpenBLAS. I've tried every tutorial and stackoverflow.com question on the topic, but still can't seem to disable the compilation of the wrapper.obj which produces…
lsdavies
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Anaconda numpy: how to enable multiprocessing?

I am trying to enable multithreading/multiprocessing in an Anaconda installation of Numpy. My test program is the following: import os import numpy as np from timeit import timeit size = 1024 A = np.random.random((size, size)), B =…
Botond
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"LNK2005 DLLMain already defined ..." conflict in Linker using MSVC

I have a C++ project which up to now had no problems compiling and linking but due to a recent computer crash I had to re-install everything including Visual Studio and all my VCPKG packages. (I am using VS 2022 Preview, and was before.) My project…
David A
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Weird segmentation faults with gemm (LAPACK)

I use LAPACK and BLAS to make matrix computations. I cannot perform a gemm with certain matrices and get segmentation faults that i can't fix. For example, i can multiply two 4500x4500 matrices together but I get a segmentation fault when i try to…
thomidani
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