Intel® Math Kernel Library

Different results given by debug mode and standalone calculation

Submitted by mrvcj on

I have been using the Intel Visual Fortran Composer XE 2011 on my project and I found something weird recently. When I run the code in the debugging window, it produces perfect result; however, if the executable is moved to a different location and perform a standalone calculation (meaning not through the IDE) there, the result is totally off. I'm sure this is caused by the MKL because:

VSL questions

Hi, I am using MKL 11.0 update 3 on Windows 7,core i7 machine.
1. Invalid correlation matrix ?
 #define N 2
 #define DIM 2
 void Test()
 {
    VSLSSTaskPtr task;     MKL_INT dim = DIM, n=N;
    MKL_INT x_storage=VSL_SS_MATRIX_STORAGE_COLS;
    MKL_INT cov_storage=VSL_SS_MATRIX_STORAGE_FULL,cor_storage=VSL_SS_MATRIX_STORAGE_FULL;
    double x[N][DIM],mean[DIM], cov[DIM][DIM], cor[DIM][DIM];
    double raw2[DIM], raw3[DIM], raw4[DIM],cen2[DIM], cen3[DIM], cen4[DIM];
    int i, j, errcode;     unsigned MKL_INT64 estimate = 0;

Pardiso unable to solve a symmetric matrix

Submitted by bryce155 on

Hello MKL tech support,

I have a positive definite matrix and using Pardiso to solve the problem. I kept receiving the error -4 for the solver. It is interative refinement problem in phase 33.

My params for pardiso are:

        iparm[7] = 15;
        iparm[10] = 0;
        iparm[12] = 0;
        iparm[0] = 1;
    iparm[1] = 0;
    iparm[3] = 0;
    iparm[4] = 0;
    iparm[5] = 0;
    iparm[6] = 0;
    iparm[9] = 13;
    
    iparm[11] = 0;
    iparm[13] = 0;

Missing rfftw function

Submitted by Miska on

Hi !

I am steadily progressing in my quest to convert from a gcc to an icc (and MKL) based build of my code. The reason for the shift is to be able to run my code on the Xeon Phi.

I have managed to get the thing to compile. However, when I run the code, I get an error:

fftw_die: rfftw() is not implemented because MKL DFTI doesn't support half-complex data layout

parallel / multi-threaded ILUT and FGMRES

Submitted by Marla S. on

Hi,

I'd like to learn if there is multi-threaded and/or parallel (mpi) support for ILUT/FGMRES in intel MKL and/or intel MKL cluster edition. I have read in a few posts that this solver might not be available in parallel for some previous versions, I want to know whether it is available in the latest versions of MKL, and what versions if any support this solver in parallel.

Thank you

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