Baseline performance of non-vectorized code: '-no-vec' or ' -no-vec -no-simd' ?
Hi,I am trying to have a baseline performance of the non-vectorized version of the following code:1532 do k = ks, ke 1533 do ii = iis, iie 1534 value = vals(ii) 1535 do j = js, je 1536 offset_1 = (...
View Article-C options Internal compiler error
Hi all, The compiler is crashing with the following piece of code, with the options ifort -O2 -c -C . removing -C seems to resolve the issue Thanks subroutine pinv(A,X) implicit none double...
View Articleproblem for ifort which does not use system lib mission like idate getarg and...
Hello experts, I installed the new version intel parallel composer XE 2013 sp2 updates2 noncommercial, but I find when I use ifort to compile the fortran codes, the error reported like the...
View Articlehow to solve problem 'usr/lib/crt1.o: could not read symbols: File in wrong...
Hello experts:I just installed intel fortran compiler 8.0 on my x86-64 computer with Centos6.5 system.in the installation process, I choose IA-32 to install it.after default choice and installation, I...
View ArticleCan this be made better?
Hello,I wonder is anyone has the time and inclination to have look at the code below forany possible improvements.The extract included here is the the heaviest user of cpu in a large-ish simulation...
View ArticleNEWUNIT= and CLOSE
Hi,When compiling and running the following code with the Intel Fortran Compiler, I get an error after entering the same (negative) integer value provided by NEWUNIT=, but gfortran runs the code...
View Articlemkl95_LAPACK produces segmentation fault (dgesv)
When I call "dgesv" routine from mkl library with fortran 95 interface I get segmentation fault.call dgesv( adns, rhs , ipiv , info ) ! forrtl: severe (174): SIGSEGV, segmentation fault occurredcall...
View ArticleSTOP statement write to terminal window
The FORTRAN code I'm working on writes its main output to unit 6. It also uses a number of STOP statements when trapping for errors. When I previously used the Lahey compiler the strings associated...
View ArticleIntel Software Tools Technical Webinar Series
These free technical webinars cover tips and techniques that will help sharpen your development skills to create faster, more reliable applications. Technical experts will cover topics ranging from...
View ArticleIFort not vectorizing loop in specific cases
I have a big set of code with OMP4.0 directives (target, simd...) In one module the compiler throws lot's of warnings about "loops not vectorized with simd" although it should.I cut the code down to...
View ArticleCall-graph data in profile output
I'm trying to perform some statistical analysis of my Fortran program using gprof. When I compile my files with "-p", the expected gmon.out file is created, however the profile file lacks call-graph...
View ArticleICE when using structure constructor in user-defined constructor
ifort seems to have trouble with the following code:module test_constructor_name implicit none type :: foo integer :: a(1) end type foo interface foo module procedure new_foo end interface contains...
View ArticleICE when using structure constructors for function pointer components
Here is some example code:program test_function_constructor implicit none abstract interface integer function get_int() end function get_int end interface type :: foo procedure(get_int), nopass,...
View ArticleOne more structure constructor error
If you try to use a structure constructor to construct a type that extends from some other type, and you have an array section argument, you get an error like the...
View ArticleWhat is the maximum character length allowed?
Hello,I wrote this simple code (see below) that converts an array of real into a very long string of characters.I have been running this little code on 2 different machines and I compiled it with the...
View Articleallocatable array efficiency issue
Is it normal to observe such a big difference in execution time when the allocatable arrays are used vs fixed.an example code produces ifort pexcample.f90 -O3 ; time ./a.out(a, fixed size) Time =...
View ArticleRun-time error in Fortran 2003 code: glibc detected free(): invalid next size...
I've had some issues trying to make some Fortran tests work (they use pFUnit, which requires most of Fortran 2003 to be implemented). It's rather difficult to reduce the test cases, partly because I...
View Articleundefined reference to `MAIN__'
Hi! My system: Debian 7.4 x86_64 / Intel Fortran Composer XE for Linux 2013 SP1 Update 2 / ifort version 14.0.2After installation Intel Fortran Composer I used: source /opt/intel/bin/compilervars.sh...
View ArticlePURE + ASSOCIATE + DO + ALLOCATE/DEALLOCATE
Hi,There seems to be a compiler bug caused by the ASSOCIATE statement when used in a PURE procedure, as shown in the following code.module mod1 implicit none type :: mytype real, allocatable ::...
View Article[CRITICAL] IFort wrongly treating variable name as directive part
If you compile the following code with ifort -openmp the compiler will detect the variable wrongly as a "map(to" directive and complain about an unknown variable.Similar in the omp update statement it...
View Article