# #LDA-INTEGER. manufactured by Intel. ENDIF IF(INCX==1)THEN #Parameters This call to the dgemm routine multiplies the matrices: The arguments provide options for how oneMKL performs the operation. 50CONTINUE END DO # http://software.intel.com/en-us/articles/intel-mkl-link-line-advisor/. #..IntrinsicFunctions.. The most widely used is the dgemm routine, which calculates the product of double precision matrices: The dgemm routine can perform several calculations. END DO Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers), ERROR: CREATE MATERIALIZED VIEW WITH DATA cannot be executed from a function. INTEGERINCX,INCY,LDA,M,N Static Library Support 2.1.10. #.. Visible to Intel only ELSE DO100,J=1,N Y(I)=ZERO # . INFO=3 TEMP=ALPHA*X(JX) Do you work for Intel? There are three directories: cublas nvblas mkl These contain Makefiles and examples of calling DGEMM from an OpenMP offload region with cuBLAS, NVBLAS, and MKL. Onexit,Yisoverwrittenbythe Required fields are marked *. IX=KX 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). KY=1 Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. # ENDIF INFO=8 Processor: Ampere Altra ARMv8 Neoverse-N1 @ 3.30GHz (160 Cores), Motherboard: WIWYNN Mt.Jade (1.1.20201019 BIOS), Chipset: Ampere Computing LLC Device e100, Memor # functionality, or effectiveness of any optimization on microprocessors not KX=1-(LENX-1)*INCX If you require any additional assistance from Intel, please start a new thread. * Form C := alpha*A*B + beta*C. * Form C := alpha*A**T*B + beta*C, * Form C := alpha*A*B**T + beta*C, * Form C := alpha*A**T*B**T + beta*C, Generated on Mon Nov 14 2022 13:13:17 for LAPACK by. PROGRAM MAIN /Samples/en-US/mkl/tutorials.zip (Linux* OS/OS X*). of Tennessee 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 Refer to the reference manual for additional documentation. Table 1 shows the running times, observed on a DEC Alpha 7000 Model 660 Super Scalar machine, of the following routines: the BLAS routine \dgemm" which performs matrix mul- tiplication; the LAPACK routines \dpotrf" and \dpbtrf" [1] which perform the Cholesky decomposition on dense and tridiagonal matrices, respectively; the private routine . #..LocalScalars.. The complete details of capabilities of the GW renormalization of the electron-phonon coupling. 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, Fortran does things differently, storing elements of a matrix in column-major order. # A and Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. 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. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. GEMM Algorithms Numerical Behavior 2.1.11. 30CONTINUE For example, DGEMM computes general matrix-matrix products, while DSYMM computes symmetric times general matrix-matrix product. for non-Intel microprocessors for optimizations that are not unique to Intel Can airtags be tracked from an iMac desktop, with no iPhone? Transfer data from the host to the device. ELSEIF(INCX==0)THEN Parameters: alphainput float ainput rank-2 array ('d') with bounds (lda,ka) binput rank-2 array ('d') with bounds (ldb,kb) Returns: crank-2 array ('d') with bounds (m,n) Other Parameters: betainput float, optional Default: 0.0 C, or the number of elements between successive PRINT *, "Top left corner of matrix C:" dgemm routine multiplies the matrices: The arguments provide options for how Intel MKL performs the operation. DGEMM Purpose: 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**T, 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. DOUBLEPRECISIONTEMP Otherwise your will be linking with something else. The dgemm routine can perform several calculations. How to prove that the supernatural or paranormal doesn't exist? IF(BETA==ZERO)THEN Forgot your Intelusername The Intel sign-in experience has changed to support enhanced security controls. #(1+(m-1)*abs(INCY))whenTRANS='N'or'n' WikiZero zgr Ansiklopedi - Wikipedia Okumann En Kolay Yolu $! PRINT *, "Top left corner of matrix B:" // No product or component can be absolutely secure. ExternalSubroutines.. Learn more about bidirectional Unicode characters, Allocate (a(lda,n), vr(ldvr,n), wi(n), wr(n)). 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 You should follow Intel's website to set the compiler flags for gfortran + MKL. Leading dimension of array B, or the number of elements between successive columns (for column major storage) in memory. ENDIF // See our complete legal Notices and Disclaimers. INFO=1 Elapsed Time = 2.1733 secs Starting CUDA . https://software.intel.com/content/www/us/en/develop/tools/oneapi/components/onemkl/link-line-advisor.html. #Onentry,LDAspecifiesthefirstdimensionofAasdeclared INFO=6 The Fortran source code for this tutorial is shown below. PRINT *, "subroutine" IF(! 30 FORMAT(6(ES12.4,1x)) JY=JY+INCY Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 90CONTINUE C = hermitian op(A) = AH. ENDIF #X.INCXmustnotbezero. a.out on Linux* OS and OS X*. $! DOUBLEPRECISIONA(LDA,*),X(*),Y(*) # ALPHA = 1.0 #updatedvectory. The one-dimensional arrays in the exercises store the matrices by placing the elements of each column in successive cells of the arrays. #Onentry,NspecifiesthenumberofcolumnsofthematrixA. You can easily search the entire Intel.com site in several ways. LENX=N rows. LENY=N information regarding the specific instruction sets covered by this notice. GUID: microprocessors. Leading dimension of array Asking for help, clarification, or responding to other answers. PRINT *, "This example computes real matrix C=alpha*A*B+beta*C" ENDIF Why is this sentence from The Great Gatsby grammatical? I would like to multiply two arrays in Fortran using DGEMM (BLAS procedure). [package - 130amd64-quarterly][biology/treekin] Failed for treekin-0.5.1_3 in build. What is the purpose of this D-shaped ring at the base of the tongue on my hiking boots? Not the answer you're looking for? 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} . ELSE // Intel is committed to respecting human rights and avoiding complicity in human rights abuses. oneMKL provides several routines for multiplying matrices. vienna-rna 2.5.1%2Bdfsg-1. ENDIF ENDIF PRINT *, "Computations completed." 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. This is a great write-up. Keeping this sequence of operations in mind, let's look at a CUDA Fortran example. Windows* OS: ifort /Qmkl src\dgemm_example.f; Linux* OS, macOS*: ifort -mkl src/dgemm_example.f; Alternatively, you can use the supplied build scripts to build and run the executables. Forgot your Intelusername You can also try the quick links below to see results for most popular searches. By joining you are opting in to receive e-mail. Here is the call graph for this function: * -- Reference BLAS is a software package provided by Univ. Save my name, email, and website in this browser for the next time I comment. For each array argument, the Java version will include an integer offset parameter, so Contact [email protected] any questions. Sorry, you must verify to complete this action. IY=IY+INCY Ask questions and share information with other developers who use Intel Math Kernel Library. $((ALPHA==ZERO)&&(BETA==ONE))) IY=IY+INCY ELSEIF(N<0)THEN Close this window and log in. SGEMM, DGEMM, CGEMM, and ZGEMM (Combined Matrix Multiplication and Addition for General Matrices, Their Transposes, or Conjugate Transposes) Edit online Purpose SGEMM and DGEMM can perform any one of the following combined matrix computations, using scalars and , matrices Aand Bor their transposes, and matrix C: You may re-send via your # Refer to the reference manual for additional documentation. If you sign in, click, Sorry, you must verify to complete this action. Go to: [ bottom of page] [ top of archives] [ this month] From: <pkg-fallout_at_FreeBSD.org> Date: Thu, 28 Oct 2021 01:49:10 UTC Thu, 28 Oct 2021 01:49:10 UTC # Regarding your first comment, gfortran compiles most of the classic Fortran instructions (usually throws a warning that some stuff has been removed in modern versions, but it compiles). Leading dimension of array A, or the number of elements between successive columns (for column major storage) in memory. Initialize host data. END DO 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. Error Status 2.1.2. cuBLAS Context 2.1.3. PRINT *, "Computing matrix product using Intel(R) MKL DGEMM " IF(INFO!=0)THEN For more complete information about compiler optimizations, see our Optimization Notice. Oct 26, 2011 #4 KStolen. It really is a great help! PRINT *, "Example completed." # for2html on Sun, 23 Jun 2002, 15:10. JX=JX+INCX Please let us know here why this post is inappropriate. It is available in Intel MKL 11.3 Beta and later releases. In the case of this exercise the leading dimension is the same as the number of #(1+(n-1)*abs(INCY))otherwise. 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. Go to: [ bottom of page] [ top of archives] [ this month] From: <pkg-fallout_at_FreeBSD.org> Date: Sun, 31 Oct 2021 06:48:50 UTC Sun, 31 Oct 2021 06:48:50 UTC Y(IY)=BETA*Y(IY) test-suite-opencl-001. oneMKL provides many options for creating code for multiple processors and operating systems, compatible with different compilers and third-party libraries, and with different interfaces. dgemm to compute the product of the matrices. 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 . Intel MKL provides several routines for multiplying matrices. mentioned batch DGEMM with an example in C. It mentioned " It has Fortran 77 and Fortran 95 APIs, and also CBLAS bindings. #INCY-INTEGER. #suppliedaszerothenYneednotbesetoninput. #N-INTEGER. Ask questions and share information with other developers who use Intel Math Kernel Library. Sometimes it is confusing knowing what is a low-level BLAS. 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 . You may re-send via your specific to Intel microarchitecture are reserved for Intel microprocessors. dgemm to compute the product of the matrices. ELSE It's surprising that your code compiled ran at all. # # Parameters # ===== # Batching Kernels 2.1.8. PRINT *, "are matrices and alpha and beta are double precision " // Performance varies by use, configuration and other factors. CALL DGEMM('N','N',M,N,K,ALPHA,A,M,B,K,BETA,C,M) Sign in here. profile. #mustcontainthevectory. 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 Thanks for your help! The reference Fortran code for BLAS and LAPACK defines de facto a Fortran API, implemented by multiple vendors with code tuned to get the best performance on a given hardware. What is the point of Thrower's Bandolier? For the executables in this tutorial, the build scripts are named: This assumes that you have installed Intel MKL and set environment variables as described in. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Example Code 2. 148 *> case C need not be set on entry. #RichardHanson,SandiaNationalLabs. # 1) Simplest case two square complex matrices: A(N,N) and B(N,N) IF(BETA!=ONE)THEN #Beforeentry,theincrementedarrayXmustcontainthe KY=1-(LENY-1)*INCY Intel MKL provides several routines for multiplying matrices. # 14 0. To run the example, copy the code into the editor and name the file calldgemm.F. CALLXERBLA('DGEMV',INFO) #ALPHA-DOUBLEPRECISION. Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. ENDIF http://matrixprogramming.com/2008/01/matrixmultiply#Fortran. As this issue has been resolved, we will no longer respond to this thread. #Starttheoperations. The arguments provide options for how Intel MKL performs the operation. 147 *> contain the matrix C, except when beta is zero, in which. . nm -S libmwblas.lib | grep dgemm 0000000000000000 I __imp_dgemm 0000000000000000 T dgemm nm -S libdmumps.a | grep dgemm U dgemm_ #JackDongarra,ArgonneNationalLab. Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. https://gcc.gnu.org/ml/gcc-patches/2016-08/msg00976.html Declare and allocate host and device memory. Your email address will not be published. Short story taking place on a toroidal planet or moon involving flying. Click Here to join Eng-Tips and talk with other members! Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. 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. For example, you can perform this operation with the transpose or conjugate transpose of A and B. Intel technologies may require enabled hardware, software or service activation. Intel's compilers may or may not optimize to the same degree See Intels Global Human Rights Principles. ArrayArguments.. #JeremyDuCroz,NagCentralOffice. Y(JY)=Y(JY)+ALPHA*TEMP #.. ENDIF # Source module last modified on Thu, 2 Jul 1998, 23:17; and I want to store ther result in C(N,N), 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 DO80,J=1,N Real value used to scale matrix # PRINT 10, " matrix A(",M," x",K, ") and matrix B(", K," x", N, ")" So I decided to write a simple guide to c/z-gemm in fortran. TEMP=ALPHA*X(JX) #mbynmatrix. Is there any example for Fortran about batch DGEMM? Alternatively, you can use the supplied build scripts to build and run the executables. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Microprocessor-dependent optimizations in this product For other compilers, use the oneMKL Link Line Advisor to generate a command line to compile and link the exercises in this tutorial: http://software.intel.com/en-us/articles/intel-mkl-link-line-advisor/. Processor: AMD Ryzen 7 5700G @ 3.80GHz (8 Cores / 16 Threads), Motherboard: BESSTAR TECH LIMITED B550 (5.17 BIOS), Chipset: AMD Renoir/Cezanne, Memory: 32GB, Disk: 512GB KINGSTON OM8PDP3512B-A01 + 2000GB Seagate ST2000LM015-2E81 + 6001GB Elements 25A3, Graphics: AMD Radeon Vega / Mobile 512MB (2000/400MHz), Audio: AMD Renoir Radeon HD Audio, Monitor: SAMSUNG, Network . #Unchangedonexit. For example, you can perform this operation with the transpose or conjugate transpose of A and B. mkl_mmx_c directory. Learn more at www.Intel.com/PerformanceIndex. Please click the verification link in your email. IY=KY Based on the test case posted here. 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. #upthestartpointsinXandY. Procceeding to close the question. #wherealphaandbetaarescalars,xandyarevectorsandAisan Alternatively, you can use the supplied build scripts to build and run the executables. columns (for column major storage) in memory. You can call LAPACK and BLAS functions from Fortran MEX files. #TRANS='N'or'n'y:=alpha*A*x+beta*y. # See Intels Global Human Rights Principles. #Onentry,MspecifiesthenumberofrowsofthematrixA. Observation: As opposed to sample 1, the compiler must be explicitly instructed that the function dgemm_ has C linkage and thus no mangling should be attempted. #Quickreturnifpossible. 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. Please click the verification link in your email. Please refer to the applicable product User and Reference Guides for more mkl [here] ifort -mkl dgemm_example.f ./ a.outlibmkl_intel_lp64.so in this case because all the matrices are squared all the indexes remain the same. # T = transpose op(A) = AT #.. IF(LSAME(TRANS,'N'))THEN document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. These optimizations include SSE2, SSE3, and SSSE3 instruction #TRANS-CHARACTER*1. DOUBLEPRECISIONONE,ZERO dgemm routine can perform several calculations. #Nmustbeatleastzero. PRINT *, "" # 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. gfortran has host_data support now, so I wanted to test DGEMM from cuBLAS. DOUBLE PRECISION ALPHA, BETA http://software.intel.com/en-us/articles/intel-mkl-link-line-advisor/. #Onentry,INCYspecifiestheincrementfortheelementsof InthisversiontheelementsofAare Sign up here DO I = 1, K You can also try the quick links below to see results for most popular searches. # dgemm routine. An actual application would make use of the result of the matrix multiplication. # Are you sure you want to create this branch? Y(IY)=ZERO A, or the number of elements between successive TEMP=TEMP+A(I,J)*X(I) 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. The most widely used is the IF(X(JX)!=ZERO)THEN 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 #EndofDGEMV. 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. ELSE are intended for use with Intel microprocessors. Login. PRINT *, "" C. Leading dimension of array Intel Math Kernel Library Reference Manual. ELSE # 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. EXTERNALLSAME Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. For other compilers, use the Intel MKL Link Line Advisor to generate a command line to compile and link the exercises in this tutorial: # 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. To review, open the file in an editor that reveals hidden Unicode characters. # Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. #Onentry,BETAspecifiesthescalarbeta. You signed in with another tab or window. IMPLICIT NONE 70CONTINUE 100CONTINUE Integers indicating the size of the matrices: Real value used to scale the product of matrices A and B. 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 . LSAME(TRANS,'T')&& 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. General Description 2.1.1. #Unchangedonexit. #Unchangedonexit. sets and other optimizations. # To compile and link the exercises in this tutorial with Intel Parallel Studio XE Composer Edition, type. IF(INCX>0)THEN > > * 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 . DO J = 1, N Sign up here Because IM is a derived type, it isn't obvious what =, <, write do.n=0 may or . orpassword? #Unchangedonexit. # GUID-36BFBCE9-EB0A-43B0-ADAF-2B65275726EA. # Perhaps I don't need "CblasRowMajor". // Your costs and results may vary. #inthecalling(sub)program. # #y:=alpha*A*x+beta*y,ory:=alpha*A'*x+beta*y, [package - 130arm64-quarterly][biology/treekin] Failed for treekin-0.5.1_3 in build. #Unchangedonexit. mkl_mmx_f directory, and the C source code can be found in the Visit Stack Exchange Tour Start here for quick overview the site Help Center Detailed answers. DO60,J=1,N Thread Safety 2.1.4. INTEGERI,INFO,IX,IY,J,JX,JY,KX,KY,LENX,LENY Can anyone post a sample FORTRAN code for dgemm JIT API like this one posted for C: https://software.intel.com/content/www/us/en/develop/articles/intel-math-kernel-library-improved-sma you may find out such examples ( e.x -mkl_jit_create_cgemmx.f90 ) into mklroot/example folder. C(I,J) = 0.0 Learn how your comment data is processed. #A-DOUBLEPRECISIONarrayofDIMENSION(LDA,n). ENDIF IF(X(JX)!=ZERO)THEN Y(JY)=Y(JY)+ALPHA*TEMP We have received your request and will respond promptly. #Y.INCYmustnotbezero. STOP Sample 2 This program contains a C++ invocation of the Fortran BLAS function dgemm_ provided by the ATLAS framework. Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2, Undefined Reference, Error Linking Plplot with GFortran, DGEMM and Numerical Constants as Arguments, gfortran 4.8.1 on Windows 7 (undefined reference to 'WinMain@16'), gfortran LAPACK "undefined reference" error, Gfortran and Undefined reference to '__[module_name]_MOD_[function_name]', Compiling with gfortran: undefined reference to iargc_, gfortran links with MKL leads to 'Intel MKL ERROR: Parameter 10 was incorrect on entry to DGEMM', Theoretically Correct vs Practical Notation. 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. PRINT *, "" ELSEIF(LDA
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