Free and Open Source Compilers. GFortran - The Fortran compiler from the GNU project. Supports parts of Fortran 2008 and is available on many platforms. LFortran - Modern interactive LLVM-based Fortran compiler; Flang - Flang is a Fortran compiler targeting LLVM. Supports Fortran 2003 and parts of Fortran 2008 available for Linux x8664 and OpenPower. Download g77-intel-bin.tar.gz (Intel Mac only) or g77-bin.tar.gz (PowerPC only). Gfortran is the new gnu fortran compiler, which attempts to follow the fortran95 standard. As such, it should be backward compatible with fortran77 and fortran90. It also promises to attempt following future fortran standards, such as fortran2003.

I've freshly installed the Intel® Parallel Studio XE Composer Edition for Fortran OS X. (student version). It comes with the Math Kernel Library, which is why I bought it. I'm having a hard time getting started with MKL. Here's what I've done step-by-step.1) Installed Intel® Parallel Studio XE Composer Edition for Fortran OS X.

(no problem). I can run a 'hello world' script using ifort and throw the -mkl link command on at the end with no problem (not calling any mkl commands just yet).2) Following I set my environment variables using a script provided by intel (located in opt/intel/bin to be precise). I have the intel 64-bit architecture (according to ifort -V) so I use bash mklvars.sh intel64 mod ilp64. It runs without error (or any output).3) I write the following code to use MKL's command for fortran95. Just multiplying 2 matrices. Program testimplicit nonereal, dimension(2,2):: testA, testB, testCtestA = 1testB = 1testC = 0!

I don't think I need this line, but it shouldn't mattercall gemm(testA, testB, testC)write(.,.) testCend program test4) I compile with ifort testmkl.f90 -o test -mkl. I get the following error: Undefined symbols for architecture x8664:'gemm', referenced from:MAIN in ifortSTVOrB.old: symbol(s) not found for architecture x86645) I try ifort testmkl.f90 -o test -L/opt/intel/mkl/lib -mkl and get the same result.I notice a lot of people using MKL begin their code with USE mkl95blas, ONLY: gemm, so I put that in above implicit none in both of the above examples and get: testmkl.f90(4): error #7002: Error in opening the compiled module file. Check INCLUDE paths. MKL95BLASUSE mkl95blas, ONLY: gemm-^testmkl.f90(12): error #6406: Conflicting attributes or multiple declaration of name. GEMMcall gemm(testA, testB, testC )-^testmkl.f90(4): error #6580: Name in only-list does not exist.

GEMMUSE mkl95blas, ONLY: gemm-^compilation aborted for testmkl.f90 (code 1)Any ideas as to what the problem is or how to fix this? I have successfully using MKL, so it's definitely something I'm doing and not my installation.

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