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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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DL4J UnsatisfiedLinkError: libopenblas_nolapack.so.0: cannot open shared object file: No such file or directory

I tried to set up a deeplearning4j and OpenCV project on Linux via maven, but I get an UnsatisfiedLinkError: 2020-01-10 16:01:58.239 ERROR 13191 --- [io-13029-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet…
SPX-4800
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Can't figure out how CBLAS works

I trying to use cblas.h (from openblas library) to compute the product of two matrices. Μore specifically, Ι have a double array A, with dimensions n*d, an array B with dimensions m*d and an array C with dimensions n*m. I want to compute the product…
sted
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Labels inside GAS macro

I need to build OpenBLAS library of iOS. I've chosen to build 0.3.6 version of it. I believe that is the most updated stable version of the library. You can find releases of this library here - https://github.com/xianyi/OpenBLAS/releases I encounter…
Eugene Alexeev
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How to check if Spark is using OpenBlas?

I recently downloaded and built Spark 2.3.1. I used these commands to download and select version 2.3.1 git clone https://github.com/apache/spark.git cd spark git checkout tags/v2.3.1 I am looking to improve the performance of my application and…
Clock Slave
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Problem with installation and using OpenBLAS and Armadillo at Ubuntu 12.04

I need to install OpenBLAS and Armadillo at Ubuntu 12.04. Despite following steps from instructions and readme, I can't do this. In fact it is even hard to describe what I do wrong, or what is the problem exactly. I am aware that I am asking a lot,…
Daniel
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Different results of numpy.linalg.lstsq on different processors

I am pretty confused by the behaviour of the numpy.linalg.leastsq. I generated exactly the same input data, pickled it and moved it on two different machines with different operating system (Ubuntu 16.04 vs Ubuntu 18.04), different processors (AMD…
linello
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How to properly link against openblas

I am declaring LAPACK functions inside a extern "C" block and then using them in my C++ code. According to my limited understanding about how BLAS/LAPACK works, linking against my blas library should be enough. However, -lblas does not suffice and I…
enanone
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OpenMP OpenBLAS nested parallelism

we are trying to run two instances of cblas_dgemm in parallel. If the total number of threads is 16, we would like each instance to run using 8 threads. Currently, we are using a structure like this: #pragma omp parallel num_threads(2) { if…
sanaz
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Simple cblas gemm code but strange result

The following is the c code const int M = 4; const int N = 1; const int K = 2; const int LDA = M; const int LDB = K; const int LDC = M; float input_data[2]{1, 1}; float weight_data[8]{1.1, 2.01, 3.001, 4.0001, 5.1, 6.01, 7.001, 8.0001}; float…
daquexian
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rMATS error "unable to access a shared library"

I am trying to run rMATS on a Linux (CentOS) cluster. On this system I do not have root access. I installed several of the rMATS dependency packages using the anaconda conda install package manager. rMATS is unable to access a shared library…
Paul
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Armadillo code cant compile in msys2 and netbeans

I'm tring to compile a simple armadillo program by netbeans and msys2: #include #include using namespace std; /* * */ int main(int argc, char** argv) { arma::Mat A = arma::randu(4,4); return 0; } I'm…
amirre
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Packages Crashing R after Using OpenBLAS

So I have two R's installed (both v 3.5.0), one running on the default BLAS (for Mac) and one running on OpenBLAS. They are not installed on the same location on my Mac. I'm going to call the one with default BLAS (normal R), the other is Open R.…
Anarchisto_de_Paris
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Building OpenBlas for Android

I am trying to build openBlas for android. Specifically I am trying to run my caffe model on android. For that I am following this GitHub repo. The main error is : no such file or directory When I try to build openBlas, I get the…
Sid24
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Issues setting up deeplab (caffe) - ATLAS Library is missing

I am trying to setup deeplab which is build on caffe. I just have issues with the dependencies - i have downloaded now "atlas3.10.3.tar" and I have added "C:\Users\johndoe\Documents\ICNET Project\atlas3.10.3.tar\ATLAS" as "Atlas_ROOT_DIR" to the…
Momo
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Numpy, Scipy: very big difference for np.dot working with nans on two machines

I have two machines - my own and server. The task is to compute cosine distances between many vectors and one given vector. After normalization, the cosine is equivalent to just dot product: cosine(u,v) = 1.0 - np.dot(u, v) / (norm(u) * norm(v)) So…
Slowpoke
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