Dear all
I use the function as follows:
call mkl_dcsradd(trans,request,sort,m,n,a,ja,ia,beta,b,jb,ib,c,jc,ic,nzmax,info)
the length of arrays a and b are 3569442 and 1156736,respectively.
m=n=250080
when I choose nzmax=9452356, I find that my sample code cannot run due to this error: program Exception - access violation.
at case of nzmax=1500000 ,the program could run ,but the result is not correct
I want to know whether it appears Memory overflow due to the value of the nzmax .
1 Does the pdposv routine, which solves a symmetric positive definite system of linear equations, allocate any other large memory except the matrix A and B?
2 To solves a symmetric positive definite system of linear equations, which routine needed addtional memory is the least ? and how many about?
Hi,
I am trying Intel® Optimized LINPACK Benchmark for Linux* OS on Multi-Intel Phi cards configuration.
My test environment :
Our application MOSEK links with the static version of MKL and we have some issues in that regard.
Note that our apllication is .so or DLL that is linked with other applications by our users and those users may also use MKL. For instance our application is linked to MATLAB (www.mathworks.com) that also uses MKL..
1. The first issue is that you say mkl_free_buffers can always be called i.e.
Experimenting with the symetric general eigen value solver dfeast_scsrgv.
Running it with a test matrix, I find that it overwrites the values for e and x on the stack?
dfeast_scsrgv (&uplo, &n, a, rows, columns,
b, rows, columns,
fpm, &epsout, &loop, &emin, &emax, &m0, eigs, eigv, &m, &res, &info);
exits with info=0, m=1, suggesting one eigenvalue was found but eigs and eigv have been changed and no longer point to the original arrays.
inputs are declared as
Hi Everyone,
I'm using the data fitting routines in MKL (w_mkl_11.0.3.171) for spline interpolation. The fortran routine where these are called is used in a C++ OpenMP multi-threaded application, inside a parallel for loop for completely independent datasets.
The first attempt produced random crashes and wrong results, which suggested a possible data race. When I added a OMP CRITICAL section around the task creation (dfdNewTask1D) and destruction (dfDeleteTask) the code started working perfectly, producing the same results as the single core invocation.
Hi,
we are using Intel MKL 11.02. since a few weeks and a first C++ example calling the includes works fine. But we have some trouble to import the mkl_rt.dll in C#. When calling the dll the program crashes without any notice. We have tried it for some functions (MKL_Set_Num_Threads, VDDIV, VDADD, DASUM, MKL_Get_Max_Threads) and always get the same result. Additionally we tested 32bit and 64bit versions of mkl_rt.dll and also the Intel C#-example "vddiv" - and result every time in a uncommented program stop.
namespace MKL_Test
public unsafe class MKL_Wrapper
Hello!
Any help will be highly appriciated)
Strange thing occures when i try to build a custom dll.
the make command i use looks like this: nmake ia32 buf_lib= export=func_list name=mkl_1
while func list contains only one function
DGEMM
And everything works perfect.
Then i add one more function to func_list so it looks like this:
DGEMM
DGEMV
, make another dll:
nmake ia32 buf_lib= export=func_list name=mkl_2
Matrix-Matrix product still works
but the dgemv function seems not working
