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Optimization question: Using temporary variables instead of direct array access

Hi,lately I've seen a piece of code out of a famous scientific article, which is known for its fastness. In it the author always uses temporary variables to restrict access to array elements to a...

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Compiling with -check bounds

I have looked at this thread - https://software.intel.com/en-us/forums/topic/271337 and I have recompiled my code with -check bounds. However this does not print as output anywhere that array...

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old 32-bit compiler vs 64-bit compiler trouble - array values

Hello, A program is seg faulting due to Common array values not being constant through subroutines.  This did not occur on our old 32-bit machine, but it has appeared in our new 64-bit machine.   Old...

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catastrophic error using automatic arrays in module procedure declarations...

Hi I'm getting a catastrophic error when trying something like this:module foo_mod ... interface ... module subroutine foo(lb,v) integer(IK), intent(in) :: lb real(RK), intent(inout) :: v(lb,:) end...

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second_INT_ETIME.f(53): error #6407: This symbolic name is not an intrinsic...

I am unable to compile lapack 3.5.0 library with intel , an i am getting following error:ifort -O3 -fPIC -c lsame.f -o lsame.o ifort -O3 -fPIC -c lsametst.f -o lsametst.o ifort -o testlsame lsame.o...

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Feature (or change?) request: "j1" and "j11"

It appears as though with some of the newer compilers (I recently jumped from 12.0.4 to 15.0.2), "j1" and "j11" are now reserved symbols.  I'm getting very obscure errors from the linker about dwarf...

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Possible bug in ifort version 14.0.1

Hi,I have encountered some strange behaviour in the ifort version 14.0.1 by deliberately forcing an overflow of a 32 bit integer on my computer. Here is how to reproduce it% ifort -v ifort version...

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Use of unlimited polymorphic object and performance question

I'm still learning how to do OO programing and have several doubts.  Although this could be a question better suited for a FORTRAN forum, I want to ask you about the performance of an executable...

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"dlopen" warning when using "-static"

Hi there,with the makefile FC =ifort -mkl -warn nounused -warn declarations -static -O3 -parallel SRC := OwnFlag = $(LibPath)$(Own)OwnLib_ifort.a LibPath = ~/.local/lib/Fortran/ Own = OwnFunctions/...

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Cycling block-do-construct with inner block-construct

Hi, I'm wondering if there exists a way (other than branching) for exiting or cycling within a inner block in a do block:... do i=1,10 block integer :: k ... if (...) then ... cycle !not possible end...

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Feature request: Compiler Version Notes

ifort currently generates comment sections in compiler-generated assembler files (built with "-s") that contain a lot of useful information, such as the compiler version and flags used when compiling;...

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Free Intel Fortran for students is back!

Intel Fortran is now available under a free, non-commercial license for qualified students on Linux, OS X and WIndows. See https://software.intel.com/en-us/qualify-for-free-software/student for more...

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convert where to if else style code in fortran.

hi below is the code I rewrote(with do loops) and further down(with where statements) is the original code. The code seems to be producing differnt values for WORK arrays over time. How to resolve this...

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Compiler bug - stream formatted nonadvancing read

Hello,I'd like to report a possible bug in Fortran Intel Compiler - it seems it doesn't read correctly data in nonadvancing way on a file opened as a formatted stream.Please consider the attached...

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Where are these references located? Installation error?

All,Thank you for taking a look at this!I have downloaded and installed composer xe 2015.3.187 and didn't see any obvious errors. However, when I try to run an often used code from other machines on my...

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A bug report

Dear developers,I would like to report a bug in ifort version 15.0.3 in SUSE Linux Enterprise Server 11.3(x86_64):--- program t implicit none integer, parameter :: o2d(1)=1 integer ::...

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Building Linux exectuable

Dear all, I hope this is the correct forum to ask this question. I have built my fortran exectuable on Windows 7  using Parallel Studio XE 2011 with VS 2010. Now I will need to build a linux exectuable...

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Having Trouble recompiling model on a new machine

Hi There,I recently migrated a model written in fortran to a new machine, from OSX to CentOS.  With this migration came a new version of ifort and icc and also a switch from using mpich2 to openmpi for...

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Switch from GNU to Ifort both under Linux

Hi there,I actually run simulations with ABAQUS Standard 6.14-1.Thereby I use some subroutines written in a combination of Fortran 77 and free-format (unlimited length of lines). In general Subroutines...

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intel fortran compatibility with xcode 6.4 and osx 10.10

I just upgraded to osx 10.10, and xcode 6.4 was automatically installed. i need to renew my intel fortran license, but before i pay for it i noticed that this combination is not listed here:...

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