topic I don't see any problem with in Intel® oneAPI Math Kernel Library

mkl_?csrcoo converter function

Bounrajbanditt_K_ — Mon, 04 Dec 2017 23:29:24 GMT

Hi,

I am trying to get this matrix format converter function to work in C. I checked and edited my program many times as well as checked the documentation but I always end up with the error:

INTEL MKL ERROR: Parameter 1 was incorrect on entry to MKL_DCSRCOO

which refers to the job array. I want to transform a sparse matrix in COO format to CSR format for use in PARDISO.

I decided to test it out on the example matrix included under the Storage Format example of the mkl-2017-developer-reference-c.pdf

Here is my code snippet below:

int main () 
{
	MKL_INT job[6];
	MKL_INT n = 5;
	MKL_INT nnz = 13;
	MKL_INT info = 0; 

	double *acsr = calloc(nnz, sizeof(double));
	MKL_INT *ja = calloc(nnz, sizeof(MKL_INT));
	MKL_INT *ia = calloc(n+1, sizeof(MKL_INT));

	double acoo[] = { 1, -1, -3, -2, 5, 4, 6, 4, -4, 2, 7, 8, -5 };
	MKL_INT rowind[] = { 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5 };
	MKL_INT colind[] = { 1, 2, 4, 1, 2, 3, 4, 5, 1, 3, 4, 2, 5 };


	job[0] = 1;
	job[1] = 1;
	job[2] = 1;
	job[5] = 0;

	mkl_dcsrcoo(job, &n, acsr, ja, ia, &nnz, acoo, rowind, colind, &info);

	getchar(); 
	return 0; 
}

I am using the 2017 version of mkl.

I don't see any problem with

mecej4 — Tue, 05 Dec 2017 03:10:36 GMT

I don't see any problem with the code snippet, provided you add the needed #include directives (at least stdio.h and mkl.h). What OS and which version/release of MKL/C compiler?

Version/Release is 17.0.0.109

Bounrajbanditt_K_ — Tue, 05 Dec 2017 19:44:49 GMT

Version/Release is 17.0.0.109 / 20160721. The initial release of Intel Parallel XE 2017.

Here are my includes in case it might help:

#define _CRT_SECURE_NO_DEPRECATE
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <mkl_lapacke.h>

#include "mkl.h"
#include "mkl_pardiso.h"
#include "mkl_types.h"
#include <time.h>

I am using Windows 7 Professional 64-bit (6.1, Build 7601)

With processor: Intel(R) Xeon(R) CPU E5-1620 v3 @ 3.50GHz (8CPUs)

I see the error, along with

mecej4 — Wed, 06 Dec 2017 00:22:00 GMT

I see the error, along with some compiler messages regarding redefinition of some macros in <math.h>, only when I use the Visual C compiler targeting x64, with the optimization option /Ot. ~~No errors with the Intel C compiler. or with /Od with the Visual C compiler. No errors with either compiler when targeting x86~~. (See #6)

I felt like I experimented

Bounrajbanditt_K_ — Wed, 06 Dec 2017 01:29:52 GMT

I felt like I experimented with a variety of the above options to no avail, the error still persists.

I am using Microsoft Visual Studio Community 2015 and I found out that the Intel Parallel Studio XE 2017 installed with it is Update 1 with Version 17.0.71.14.

I'm not sure which compiler I'm using or how to switch but I did target x86 as well as messed with various optimization options with the same result.

Appreciate the assistance thus far though.

If you open a Parallel Studio

mecej4 — Wed, 06 Dec 2017 01:36:00 GMT

If you open a Parallel Studio command prompt from the Start menu, and type "cl" (for the Visual C compiler) or "icl" (for the Intel C compiler), you will see the version of the compiler displayed.

I find that if I set up %INCLUDE% so that the Intel C-compiler's non-MKL-related include files are never used, the problems do not occur with older Visual C compilers. That is, if you use the Visual C compiler, and target x64, do not let it search for include files that came with the Intel C compiler, except for the MKL include files, and use an older version of the Visual compiler than 19.11.25507.1 .

UPDATE: I think that the real cause of the problems is that job[3] and/or job[4] are undefined. Some versions of the MKL documentation make no mention of what should go into job[3] (it is intended to specify whether the upper or lower triangle or the whole of the dense matrix is to be filled in), and says that job[4] should be set equal to nzmax in the case when job[0]=0. If this conjecture is correct, the bug should be easy to fix for the MKL team.

In the meantime, please set job[3] and job[4] to zero and see if that makes the problem go away.

Here are some details

mecej4 — Wed, 06 Dec 2017 03:01:32 GMT

Here are some details regarding the MKL bug. Stepping into the MKL routines in the VS debugger, I found the following lines of assembler:

00007FFDF93FDB70  cmp         dword ptr [rcx+8],1    #  job[2] > 1 ?
00007FFDF93FDB74  ja          00007FFDF93FDB4A  
00007FFDF93FDB76  cmp         dword ptr [rcx+10h],0  #  job[4] < 0 ?
00007FFDF93FDB7A  jl          00007FFDF93FDB4A  
00007FFDF93FDB7C  cmp         dword ptr [rcx+14h],3  #  job[5] > 3 ?
00007FFDF93FDB80  ja          00007FFDF93FDB4A

Note that RCX contains the first argument to mkl_dcsrcoo, which is the pointer to the JOB array. In the example code, JOB = [1, 1, 1, ?, ?, 0]. The second compare instruction queries the value of JOB[4], which is not defined. If the junk value happens to be negative, things go wrong. I think that the manual should make it clear that JOB[4] should be set to zero, or the MKL code should be fixed.

Hello,

Ying_H_Intel — Wed, 06 Dec 2017 04:03:31 GMT

Hello,

Please refer to MKL example dconverters.c, which be default in MKL install directory . and it provided the sample code about the function.

for example

MKL_INT job[8];

job[0]=1;
job[5]=2;
mkl_scsrcoo (job,&n, Acsr, AJ,AI,&nnz,Acoo, ir,jc,&info);

If it is still issue, please submit your question to our official support channel: Online Service Center - Intel Support

Best Regards

Ying

Yes you are right mecej4, it

Bounrajbanditt_K_ — Wed, 06 Dec 2017 06:59:59 GMT

Yes you are right mecej4, it seems I need to initialize job[3] and job[4] to 0. I was a bit confused as job[3] wasn't mentioned in the documentation and job[4] is used for when job[0] = 0 so I thought I can ignore it. I cannot express my gratitude enough.

Thank you both for the help.

Glad to hear that the

mecej4 — Wed, 06 Dec 2017 08:53:00 GMT

Glad to hear that the suggestion worked.

Re: If you open a Parallel Studio

Gagan — Mon, 22 Apr 2024 20:01:22 GMT

doing more checking brb

Re: Hello,

Gagan — Mon, 22 Apr 2024 23:18:50 GMT

see below.

MAKE SURE YOU COMPILE WITH -lmkl_intel_lp64 !

i recommend you don't add -DMKL_ILP64 -lmkl_intel_ilp64 to the command line, as i had issues with my test program when using them. but that's up to you and may be "against recommended usage".

what i can say is i had no problem converting a matrix with millions of elements when using -lmkl_intel_lp6

and as ying recommended, set the job array to 8, even though tis' probably not required

setting jobs[3] = 0 does nothing and should not do anything, either. its not the solution.

Re: Hello,

Gagan — Mon, 22 Apr 2024 20:22:27 GMT

TO ANYONE EXPERIENCING THIS ISSUE;

make SURE you are compiling with -lmkl_intel_lp64

i experienced this issue when converting CSR to COO and i was puzzled. this flag is important.

i do find it strange the compiler does not throw an error in the absence of this library, as compiling with

-lmkl_intel_thread -lmkl_core -lmkl_intel_ilp64

compile without issues, but exhibits the exact issue that stumped many people on this forum (and will continue to do so).

-lmkl_core -lmkl_intel_thread -lmkl_intel_lp64

and it seems to work.