Basic question regarding matrix inversion vs solver
Dear all,Given a matrix A, I need to calculate element (1,1) of its inverse... i.e. if B = inv(A), i need B(1,1), and not the entire matrix B.Hence, doing a complete inversion of matrix A seems a bit...
View ArticleProblem with upgrade from MKL 10 to 2013
What I used Visual Studio 2010 with MKL 2013 installed to upgrade a complex C#/Fortran solution from Visual Studio 2008/Intel fortran 10. When I build the project, I get an error linking the Fortran...
View Articleicc: error #10052: could not checkout FLEXlm license
Hi,I have been trying to install the Intel Parallel Studio for linux and have finally reached the end of my abilities. I have all packages installed, but I get the following when I try to run icc...
View Articlebug in ZGETRF thread spawning?
A week ago I noticed that my code is running at about 50% of the expected speed, and upon closer inspection I found that ZGETRF spawns significantly more threads than intended when called inside a...
View Articlemodifying the pardiso solver's sparse factorization
I am attempting to implement this algorithm for efficiently computing the solution to a sparse linear system of equations when small changes are made to the input matrix A by updating only the matrix L...
View ArticleMemory requirement of SVD drivers
I tried dgedd routines from https://software.intel.com/en-us/node/521149My matrix is 100K by 30K, about 24 GB in size. I am using MKL 11.3 on a windows server with about 300 GB memory. The routines...
View ArticleIBM Benchmark gets too slow from 16 MPI processes
Hi, folksI am performing Intel MPI's IMB Benchmark to test the connectivity & bandwidth of my cluster server (CentOS 6.4, Mellanox Infiniband)CMD: $ mpiexec.hydra -genv I_MPI_DEBUG 5 -genv...
View ArticleError in documentation
Here https://software.intel.com/en-us/node/520871 in packed storage description.This k(i, j) = i - 1 + (j - 1)/2 seems to be incorrect.
View Articlequestion about some parameter of scalapack routine
I have some questions about the use of scalapack. For example, I want to use the eigensolver pdsyev to obtain all the eigenvalues and eigenvectors.By now, I can hardly understand the dimensions of...
View ArticleMersenne Twister
Hi,I have two questions:a) In the Mersenne sample code in Matsumoto's page (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/VERSIONS/C-LANG/mt19937-...), there are 3 variants for creating a double (64...
View ArticleLAPACK memory problem
Hi all, We have a small workstation equipped with four 16 core AMD Opteron 6376 processors running at 2.3 GHz, for a total of 64 cores, and 256 GB memory. While doing tests with INTEL MKL package, we...
View ArticleAndroid ICC MKL support
We have recently purchased Intel® System Studio Composer Edition, and need to use FFT algorithm.Qusestions: 1. Does MKL supported for Android target operating system? 2.If so, can you refer usto an...
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segfault: adapted code from mkl 11.3.0 example, LLS routine: lapacke_sgels_row.c
the attached code is just simply modified matrix size from original example: size of matrix and how they are initialized. --the size: M, N and NRHS: 15000 150 1when build with options from:...
View ArticleWhat is gemm doing what I can't do
Hi thereI am using gemm for multiplication of a matrix A with it's transpose. I wouldn't bother thinking about what it is doing if A hadn't four specific properties: a) as it contains only 0,1 or 2 it...
View ArticleExtended eigensolver problem
Hi all,I am using MKL extended eigensolver (version 2015) for my eigenvalue problems. I tested it for a simple diagonal matrix {1, 2, 3}. However, I could not get the eigenvalues/eigenvectors using...
View ArticlePardiso 24 cores poor scaling
I am using Pardiso on a machine with two twelve-core processors. HT is disabled in BIOS. Upto 12threads the CPU time scales reasonably, but 24threads is only 10% faster than with 12threads on one...
View ArticleSpline interpolation using Intel MKL
Hi all,I'm very new to using Intel MKL libraries and I would like to use the Spline Interpolation function for one of my Fortran projects.Could someone please help me with a simple example on how to...
View ArticlePlz... help me.. i don't build fortran code..
ithank you for read my message. I don't build my fortran code.This code name is "full matrix" and check the spending time 'LU decomposition, G-S, Jacobi'Of course it included MKL and I installed my...
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FEAST solver missing eigenvalues
I am solving a sparse eigenvalue problem between emin and emax. When I use a subset of this range, I find extra eigenvalues. Attached is the test program and matrices. The test program output...
View ArticleTransfer license
Hi,I have an Intel MKL product, but the person who had registered this software is no longer with the company. Can you please help me transfer the license?Regards,Jang
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