20CONTINUE Spark LDA Scala API doc XXXXX term XXXXX 1 x 'a' x 1 x 'a' x 1 x 'b' x 2 x 'b' x 2 x 'd' x . . http://matrixprogramming.com/2008/01/matrixmultiply#Fortran. #Onentry,INCXspecifiestheincrementfortheelementsof In the LAPACK library, matrix factorization functions are implemented with blocked factorization algorithm, shifting . Parameters Author Univ. 60CONTINUE #INCX-INTEGER. IF(ALPHA==ZERO) PRINT *, "This example computes real matrix C=alpha*A*B+beta*C" #Unchangedonexit. INTEGERI,INFO,IX,IY,J,JX,JY,KX,KY,LENX,LENY A tag already exists with the provided branch name. #.. Sample 2 This program contains a C++ invocation of the Fortran BLAS function dgemm_ provided by the ATLAS framework. For the executables in this tutorial, the build scripts are named: This assumes that you have installed oneMKL and set environment variables as described in . Leading dimension of array ENDIF Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. This call to the Hence, the question may be related to use mkl with gfortran? The example program solves the following system of linear equations with LAPACK: The LAPACK subroutine sgesv()computes the solution to a real system of linear equations AX = B, where Ais an n-by-nmatrix, and Xand Bare n-by-nrhsmatrices. #X.INCXmustnotbezero. See Intels Global Human Rights Principles. Class Dgemm java.lang.Object org.netlib.blas.Dgemm public class Dgemm extends java.lang.Object Following is the description from the original Fortran source. KY=1 # dgemm routine multiplies the matrices: The arguments provide options for how Intel MKL performs the operation. Sign up here Forgot your Intelusername test-suite-opencl-001. dgemm routine, which calculates the product of double precision matrices: The The arrays are used to store these matrices: The one-dimensional arrays in the exercises store the matrices by placing the elements of each column in successive cells of the arrays. oneMKL provides several routines for multiplying matrices. 70CONTINUE https://software.intel.com/content/www/us/en/develop/tools/oneapi/components/onemkl/link-line-advisor.html. #andatleast PRINT 10, " matrix A(",M," x",K, ") and matrix B(", K," x", N, ")" B should not be transposed or conjugate transposed before multiplication. This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead. # orpassword? 1) Simplest case two square complex matrices: A (N,N) and B (N,N) and I want to store ther result in C (N,N) the call to cgemm will be SUBROUTINE CGEMM ( TRANSA, TRANSB, N, N, N, ALPHA, A, LDA, B, LDA, BETA, C, LDC ) where LDA=LDB=LDC=N and TRANSA (B) can be an operation on the matrix A (B) 'N' = use the A matrix as it is ELSEIF(M<0)THEN #Unchangedonexit. PRINT *, "are matrices and alpha and beta are double precision " 1) Simplest case two square complex matrices: A(N,N) and B(N,N) 90CONTINUE ELSE PRINT 30, ((C(I,J), J = 1,MIN(N,6)), I = 1,MIN(M,6)) We have received your request and will respond promptly. PRINT *, "using Intel(R) MKL function dgemm, where A, B, and C" Close this window and log in. JY=JY+INCY B. IF(INCX==1)THEN #vectorx. Is there any example for Fortran about batch DGEMM? of Tennessee, --, * -- Univ. For example, DGEMM computes general matrix-matrix products, while DSYMM computes symmetric times general matrix-matrix product. Because BLAS is written in Fortran . ExternalFunctions.. PARAMETER(ONE=1.0D+0,ZERO=0.0D+0) 196, 220 and 221 and so will pblasc example will fail if run with Intel MPI 2019. A tag already exists with the provided branch name. Sign in here. #(1+(m-1)*abs(INCX))otherwise. for non-Intel microprocessors for optimizations that are not unique to Intel LDAmustbeatleast BUG FIXES. After extracting the folder you can find the example of dgemm_batch in blas/source folder. ELSE dgemm routine. # DGEMM performs one of the matrix-matrix operations # # C := alpha*op( A )*op( B ) + beta*C, # # where op( X ) is one of # # op( X ) = X or op( X ) = X', # # alpha and beta are scalars, and A, B and C are matrices, with op( A ) # an m by k matrix, op( B ) a k by n matrix and C an m by n matrix. Please click the verification link in your email. # mkl_mmx_f directory, and the C source code can be found in the By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Styling contours by colour and by line thickness in QGIS. subroutine dgemv ( trans, m, n, alpha, a, lda, x, incx, $ beta, y, incy ) # .. scalar arguments .. double precision alpha, beta integer incx, incy, lda, m, n This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Only show results matching title/arguments (delimit multiple options with a comma): Please click the verification link in your email. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. 10CONTINUE ExternalSubroutines.. PRINT *, "Example completed." Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. I have the following Fortran code from https://software.intel.com/content/www/us/en/develop/documentation/mkl-tutorial-fortran/top/multiplying-matrices-using-dgemm.html, I am trying to use gfortran complile it (named as dgemm.f90), By gfortran -lblas -llapack dgemm.f90, I got, I searched that this type of question has been asked time to time, but I haven't found a solution for my case :(, I tried to use python load blas, based on https://software.intel.com/content/www/us/en/develop/articles/using-intel-mkl-in-your-python-programs.html. You signed in with another tab or window. Transfer results from the device to the host. GUID: CALLXERBLA('DGEMV',INFO) #..Parameters.. Although oneMKL supports Fortran 90 and later, the exercises in this tutorial use FORTRAN 77 for compatibility with as many versions of Fortran as possible. STOP #..IntrinsicFunctions.. . specific to Intel microarchitecture are reserved for Intel microprocessors. Onexit,Yisoverwrittenbythe Not the answer you're looking for? INFO=2 Sorry, you must verify to complete this action. ENDIF GEMM Algorithms Numerical Behavior 2.1.11. This is a great write-up. // Your costs and results may vary. DO10,I=1,LENY Sample Fortran code for dgemm JIT API - Intel Communities Intel oneAPI Math Kernel Library Intel Communities Developer Software Forums Toolkits & SDKs Intel oneAPI Math Kernel Library 6678 Discussions Sample Fortran code for dgemm JIT API Subscribe Wasif__Syed Beginner 07-06-2020 05:39 AM 348 Views In the case of this exercise the leading dimension is the same as the number of Intel MKL provides many options for creating code for multiple processors and operating systems, compatible with different compilers and third-party libraries, and with different interfaces. GUID-36BFBCE9-EB0A-43B0-ADAF-2B65275726EA. DO I = 1, M ELSE After compiling and linking, execute the resulting executable file, named dgemm_example.exe on Windows* OS or a.out on Linux* OS and macOS*. mentioned batch DGEMM with an example in C. It mentioned " It has Fortran 77 and Fortran 95 APIs, and also CBLAS bindings. Scalar Parameters 2.1.6. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. If you require any additional assistance from Intel, please start a new thread. $! // Performance varies by use, configuration and other factors. Leading dimension of array # Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Please refer to the applicable product User and Reference Guides for more IY=IY+INCY https://software.intel.com/content/www/us/en/develop/documentation/onemkl-developer-reference-fortra You can find the examples in oneAPI/mkl/latest/examples folder and extract the examples_core_f.zip. *Eng-Tips's functionality depends on members receiving e-mail. Making statements based on opinion; back them up with references or personal experience. PRINT *, "" TEMP=TEMP+A(I,J)*X(I) Using the Intel Math Kernel Library 11.3 for Matrix Multiplication Tutorial. INTRINSICMAX #Onentry,BETAspecifiesthescalarbeta. I am currently struggling a lot trying to compile the Fortran CUBLAS example (Fortran_Cuda_Blas.tgz) under Windows XP with Microsoft Visual Studio 2005 (using Intel Fortran Compiler). LAPACK routines have to be imported individually using the For example, for the class which represents multiplication subroutines, there are attributes to de-termine which specific multiplication subroutine to be called, attributes to pass the multiplication coefficient, attributes to determine how to reorder the indices in the multiplication component quantities, etc. Learn how your comment data is processed. It's surprising that your code compiled ran at all. Already a member? Please click the verification link in your email. ENDIF microprocessors. Registration on or use of this site constitutes acceptance of our Privacy Policy. The Fortran source code for the exercises in this tutorial. END DO rows. columns (for column major storage) in memory. It is available in Intel MKL 11.3 Beta and later releases. #Quickreturnifpossible. nm -S libmwblas.lib | grep dgemm 0000000000000000 I __imp_dgemm 0000000000000000 T dgemm nm -S libdmumps.a | grep dgemm U dgemm_ Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, undefined reference to `dgemm_' in gfortran in windows subsystem ubuntu, https://software.intel.com/content/www/us/en/develop/documentation/mkl-tutorial-fortran/top/multiplying-matrices-using-dgemm.html, https://software.intel.com/content/www/us/en/develop/articles/using-intel-mkl-in-your-python-programs.html, How Intuit democratizes AI development across teams through reusability. OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version. General Description 2.1.1. 20 FORMAT(6(F12.0,1x)) #upthestartpointsinXandY. Y(IY)=Y(IY)+TEMP*A(I,J) // Your costs and results may vary. See Intels Global Human Rights Principles. # Learn more at www.Intel.com/PerformanceIndex. Altra Q80-33 2P. profile. # dgemm to compute the product of the matrices. # IX=KX 147 *> contain the matrix C, except when beta is zero, in which. PRINT *, "" columns (for column major storage) in memory. 50CONTINUE 145 *> C is DOUBLE PRECISION array, dimension ( LDC, N ) 146 *> Before entry, the leading m by n part of the array C must. Thanks for contributing an answer to Stack Overflow! You may re-send via your, Intel Connectivity Research Program (Private), oneAPI Registration, Download, Licensing and Installation, Intel Trusted Execution Technology (Intel TXT), Intel QuickAssist Technology (Intel QAT), Gaming on Intel Processors with Intel Graphics, https://software.intel.com/content/www/us/en/develop/articles/introducing-batch-gemm-operations.html. 100CONTINUE To compile and link the exercises in this tutorial with Intel Parallel Studio XE Composer Edition, type. # For other compilers, use the Intel MKL Link Line Advisor to generate a command line to compile and link the exercises in this tutorial: After compiling and linking, execute the resulting executable file, named. If you sign in, click, Sorry, you must verify to complete this action. To run the example, copy the code into the editor and name the file calldgemm.F. #updatedvectory. What is the purpose of this D-shaped ring at the base of the tongue on my hiking boots? LENY=N #LDA-INTEGER. 149 *> On exit, the array C is overwritten by the m by n matrix. # The arrays are used to store these matrices: The one-dimensional arrays in the exercises store the matrices by placing the elements of each column in successive cells of the arrays. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Connect and share knowledge within a single location that is structured and easy to search. rev2023.3.3.43278. This exercise illustrates how to call the dgemm routine. #Onentry,LDAspecifiesthefirstdimensionofAasdeclared IX=IX+INCX #X-DOUBLEPRECISIONarrayofDIMENSIONatleast The Fortran source code for the exercises in this tutorial ELSE END DO Execute one or more kernels. getParseData() gave incorrect column in this case because all the matrices are squared all the indexes remain the same. tutorials.zip file, the Fortran source code can be found in the BETA = 0.0 InthisversiontheelementsofAare . You can also try the quick links below to see results for most popular searches. links: PTS, VCS area: non-free; in suites: bookworm, sid; size: 73,432 kB; sloc: ansic: 164,656; cpp: 16,273; perl: 6,471; pascal: 5,406 . The most widely used is the dgemm routine, which calculates the product of double precision matrices: The dgemm routine can perform several calculations. #include "fintrf.h" subroutine mexFunction (nlhs, plhs, nrhs, prhs) mwPointer plhs (*), prhs (*) integer . sets and other optimizations. We selected an optimal algorithm from the instruction set perspective as well software tools optimized for Intel Advance Vector Extensions (AVX). #Y-DOUBLEPRECISIONarrayofDIMENSIONatleast http://software.intel.com/en-us/articles/intel-mkl-link-line-advisor/. #JackDongarra,ArgonneNationalLab. INTEGER M, K, N, I, J To review, open the file in an editor that reveals hidden Unicode characters. vienna-rna 2.5.1%2Bdfsg-1. for a basic account. END, This exercise illustrates how to call the, CALL DGEMM('N','N',M,N,K,ALPHA,A,M,B,K,BETA,C,M). I have linked my code with the library "cublas.lib" but I still obtain this : ". #TRANS='N'or'n'y:=alpha*A*x+beta*y. IY=KY Intels products and software are intended only to be used in applications that do not cause or contribute to a violation of an internationally recognized human right. Intel's compilers may or may not optimize to the same degree IF(INCY>0)THEN #Starttheoperations. #mbynmatrix. R News CHANGES IN R 3.4.1 INSTALLATION on a UNIX-ALIKE. KY=1-(LENY-1)*INCY It really is a great help! #containthematrixofcoefficients. The above code works. END DO 2) Now a more complex case A(N,M), B(M,N) and C(N,N) with M=5 and N=3 as in the figure, we can also multiply B for A and get a 55 matrix as result. As this issue has been resolved, we will no longer respond to this thread. > > * the performance increase to be had is marginal, given that we are mostly > > talking about code written in C or C++ without even compiler vectorization > > (-ftree-vectorize) turned on, > > I forget the details, but libxsmm is something that depends on an > instruction introduced with SSE3, and is a good example of portable > performance . #Unchangedonexit. Already a Member? # #Level2Blasroutine. IF(BETA==ZERO)THEN #BeforeentrywithBETAnon-zero,theincrementedarrayY 30CONTINUE I would like to multiply two arrays in Fortran using DGEMM (BLAS procedure). IF(INFO!=0)THEN # For example, you can perform this operation with the transpose or conjugate transpose of A and B. #Unchangedonexit. B(I,J) = -((I-1) * N + J) ELSEIF(INCX==0)THEN 30 FORMAT(6(ES12.4,1x)) It is available in Intel MKL 11.3 Beta and later releases. So I decided to write a simple guide to c/z-gemm in fortran. Sign up here IY=IY+INCY CALL DGEMM('N','N',M,N,K,ALPHA,A,M,B,K,BETA,C,M) IY=IY+INCY communities including Stack Overflow, the largest, most trusted online community for developers learn, share their knowledge, and build their careers. DO60,J=1,N #Beforeentry,theleadingmbynpartofthearrayAmust #EndofDGEMV. #.. Microprocessor-dependent optimizations in this product ELSE #inthecalling(sub)program. # ENDIF The most widely used is the Procceeding to close the question. IF(INCY==1)THEN RETURN The complete details of capabilities of the dgemm routine and all of its arguments can be found in the ?gemm topic in the Intel Math Kernel Library Reference Manual. I saw https://software.intel.com/content/www/us/en/develop/articles/introducing-batch-gemm-operations.html, mentioned batch DGEMM with an example in C. It mentioned, " It has Fortran 77 and Fortran 95 APIs, and also CBLAS bindings. The Intel sign-in experience has changed to support enhanced security controls. In this paper, we investigate different implementations of TeaLeaf, a mini-application from the Mantevo suite that solves the linear heat conduction equation. EXTERNALLSAME This exercise demonstrates declaring variables, storing matrix values in the arrays, and calling dgemm to compute the product of the matrices. ENDIF What is the point of Thrower's Bandolier? Ask questions and share information with other developers who use Intel Math Kernel Library. JX=JX+INCX # IF((M==0)||(N==0)|| #ALPHA-DOUBLEPRECISION. DOUBLEPRECISIONALPHA,BETA # To compile and link the exercises in this tutorial with Intel Parallel Studio XE Composer Edition, type. . Please read the documents on OpenBLAS wiki.. Binary Packages. for2html on Sun, 23 Jun 2002, 15:10. #(1+(n-1)*abs(INCY))otherwise. # # Parameters # ===== # Click Here to join Eng-Tips and talk with other members! Is it possible to create a concave light? #Formy:=alpha*A'*x+y. ELSE dgemm to compute the product of the matrices. Refer to the reference manual for additional documentation. #Onentry,MspecifiesthenumberofrowsofthematrixA. // See our complete legal Notices and Disclaimers. a sample Makefile, with some useful compiler options, basic_dgemm.c a very simple square_dgemm implementation, blocked_dgemm.c a slightly more complex square_dgemm implementation basic_fdgemm.f a very simple Fortran square_dgemm implementation, f2c_dgemm.c a wrapper that lets the C driver program call the Fortran implementation, #N-INTEGER. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers), ERROR: CREATE MATERIALIZED VIEW WITH DATA cannot be executed from a function. Oct 26, 2011 #4 KStolen. Following on the dgemm example, we now have this new C API/ABI: void cblas_dgemm(const enum CBLAS_ORDER Order, const enum CBLAS_TRANSPOSE TransA, const enum CBLAS . Fortran does things differently, storing elements of a matrix in column-major order. Real value used to scale matrix 120CONTINUE Leading dimension of array C, or the number of elements between successive columns (for column major storage) in memory. Thanks for accepting as a Solution. manufactured by Intel. functionality, or effectiveness of any optimization on microprocessors not Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. dgemm routine can perform several calculations. DO I = 1, K SUBROUTINEDGEMV(TRANS,M,N,ALPHA,A,LDA,X,INCX, The browser version you are using is not recommended for this site.Please consider upgrading to the latest version of your browser by clicking one of the following links. WikiZero zgr Ansiklopedi - Wikipedia Okumann En Kolay Yolu PRINT *, "Computing matrix product using Intel(R) MKL DGEMM " # IF(! Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site RETURN #JeremyDuCroz,NagCentralOffice. #========== ELSE DO90,I=1,M For more complete information about compiler optimizations, see our Optimization Notice. #(1+(m-1)*abs(INCY))whenTRANS='N'or'n' To compile and link the exercises in this tutorial with Intel Parallel Studio XE Composer Edition, type. #Mmustbeatleastzero. 10 FORMAT(a,I5,a,I5,a,I5,a,I5,a) # To subscribe to this RSS feed, copy and paste this URL into your RSS reader. https://gcc.gnu.org/ml/gcc-patches/2016-08/msg00976.html IMPLICIT NONE ENDIF Thread Safety 2.1.4. JY=JY+INCY Are there tables of wastage rates for different fruit and veg? #Onentry,NspecifiesthenumberofcolumnsofthematrixA. Although Intel MKL supports Fortran 90 and later, the exercises in this tutorial use FORTRAN 77 for compatibility with as many versions of Fortran as possible. ELSEIF(N<0)THEN Here are my example matrices: [itex]A = \begin{bmatrix}1 &1 &1 &1 \\ 1 &1 &1 &1 \\ 1 &1 &1 &1 \\ 1 &1 &1 &1 \end{bmatrix} . cblas_dgemm is a BLAS function that gives C. . document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. A and IY=KY #..LocalScalars.. JY=KY #Purpose DO30,I=1,LENY Dont have an Intel account? PRINT *, "" #RichardHanson,SandiaNationalLabs. ENDIF B, or the number of elements between successive Cannot retrieve contributors at this time. C = hermitian op(A) = AH. A First CUDA Fortran Program // No product or component can be absolutely secure. Dont have an Intel account? Transfer data from the host to the device. Note: The NVBLAS Makefile is hard-coded for Summit. Example Code 2. # After you unzip the ENDIF Hi! These optimizations include SSE2, SSE3, and SSSE3 instruction # PRINT *, "" PROGRAM MAIN Performance varies by use, configuration and other factors. ELSE Batching Kernels 2.1.8. 2.1Examples 2.2Delegation 2.3Hierarchy 2.4Namespace versus scope 3In programming languages 3.1Computer-science considerations 3.1.1Use in common languages 3.1.1.1C 3.1.1.2C++ 3.1.1.3Java 3.1.1.4C# 3.1.1.5Python 3.1.1.6XML namespace 3.1.1.7PHP 3.2Emulating namespaces 4See also 5References Toggle the table of contents Namespace 32 languages IF(LSAME(TRANS,'N'))THEN Required fields are marked *. // Intel is committed to respecting human rights and avoiding complicity in human rights abuses. Intels products and software are intended only to be used in applications that do not cause or contribute to a violation of an internationally recognized human right. PARAMETER (M=2000, K=200, N=1000) PRINT 20, ((A(I,J), J = 1,MIN(K,6)), I = 1,MIN(M,6)) mkl_mmx_c directory. . # . Learn more about bidirectional Unicode characters, Allocate (a(lda,n), vr(ldvr,n), wi(n), wr(n)). Thanks for your help! Basic Linear Algebra Subprograms (BLAS) is a specification that prescribes a set of low-level routines for performing common linear algebra operations such as vector addition, scalar multiplication, dot products, linear combinations, and matrix multiplication.They are the de facto standard low-level routines for linear algebra libraries; the routines have bindings for both C ("CBLAS interface . # Can you please let us know if your issue has been resolved. Parallelism with Streams 2.1.7. Find centralized, trusted content and collaborate around the technologies you use most. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Performance varies by use, configuration and other factors. PRINT *, "" LOGICALLSAME Results Reproducibility 2.1.5. The one-dimensional arrays in the exercises store the matrices by placing the elements of each column in successive cells of the arrays. 3) Another possibility is to use operations different from N, for example the transpose T of the hermitian C, for example this two codes are equivalent but the second is faster and use less memory: notice that the LDA and LDB specify the entry dimension of the matrix A and B, therefore in the second case the entry dimension is the first dimension of the original matrices A and B, while in the first example it corresponds to the one of transpose(A) and transpose(B). Matrix factorization functions are used in many areas and often play an important role in the overall performance of the applications. The most widely used is the, Intel Math Kernel Library Developer Reference, This exercise demonstrates declaring variables, storing matrix values in the arrays, and calling. WhenBETAis Y(IY)=BETA*Y(IY) Asking for help, clarification, or responding to other answers. ". Y(I)=BETA*Y(I) # DO120,J=1,N Integers indicating the size of the matrices: Real value used to scale the product of matrices A and B. Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. Use dgemm to Multiply Matrices LSAME(TRANS,'T')&& of Colorado Denver and NAG Ltd..--, * =====================================================================, * Set NOTA and NOTB as true if A and B respectively are not, * transposed and set NROWA and NROWB as the number of rows of A. // Performance varies by use, configuration and other factors. Y(IY)=ZERO Fortran source code is found in dgemm_example.f PROGRAM MAIN IMPLICIT NONE DOUBLE PRECISION ALPHA, BETA INTEGER M, K, N, I, J PARAMETER (M=2000, K=200, N=1000) DOUBLE PRECISION A (M,K), B (K,N), C (M,N) PRINT *, "This example computes real matrix C=alpha*A*B+beta*C" PRINT *, "using Intel (R) MKL function dgemm, where A, B, and C" PRINT *, "are rows. #--Writtenon22-October-1986. IF(X(JX)!=ZERO)THEN Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. [package - 130arm64-quarterly][biology/treekin] Failed for treekin-0.5.1_3 in build. The Intel sign-in experience has changed to support enhanced security controls. CHARACTER*1TRANS Your email address will not be published. GEMM with oneMKLFortran OpenMP Offload Use target data mapto send matrices to the device Use target variant dispatchto request GPU execution for dgemm List mapped device pointers in the use_device_ptrclause Optional nowaitclause for asynchronous execution Use !$omptaskwaitfor synchronization Module for Fortran OpenMP offload 11 The following example takes two matrices and multiplies them by calling the BLAS routine dgemm. GUID-36BFBCE9-EB0A-43B0-ADAF-2B65275726EA, Tutorial: Using the Intel oneAPI Math Kernel Library (oneMKL) for Matrix Multiplication, Introduction to the Intel oneAPI Math Kernel Library, Measuring Performance with oneMKL Support Functions, http://software.intel.com/en-us/articles/intel-mkl-link-line-advisor/, Intel oneAPI Math Kernel Library Knowledge Base, Click here for more Getting Started Tutorials. * * The underscore at the end of the routine name is there so that the routine* * may be called as an integer valued FORTRAN function name RESUSE(), under * * both the SunOS and Ultrix f77 compilers.