Messing with POINTERS and ALLOCATABLE dimensions
I'm working with this code which basically allocates and deals with arrays of multiple kinds and dimensions, e.g. SUBROUTINE calc_real_2(u) REAL, ALLOCATABLE, INTENT(INOUT) DIMENSION(nx,ny) :: u . . ....
View Articleerror #5462: Global name too long with ifort 15.0.2
Hello,I'm attempting to compile some Fortran code with ifort 15.0.2. The compilation fails with:algorithm/psy_dynamo_algorithm_rk_timestep_mod.f90(1): error #5462: Global name too long, shortened from:...
View ArticlePerformance of derived type function call
Hi,In the following simple code, where the operator .lt. is used a lot of times, i found that ifort is slower than gfortran by a factor of 2. First i thought it was the handling of the class(*) but in...
View Articleperformance degradation with ifort 15.0.2
Hi,Previously I built my program with ifort 14.0.1 + impi 4.1. Recently, after switching to ifort 15.0.2 + impi 5.0, my program runs ~30% slower on one SandyBridge core. I keep the compiler options the...
View ArticleArray Vs pointer and loop parameter optimization
Hi,I have an optimization question regarding the following code, that does a 'findloc', It appears that for ifort the do loop parameter change the optimization, and passing an pointer instead of the...
View Articlecompilation with mpiifort - error not found MPI_CHAR type
Hello,I try to install a code on a HPC under Linux.My command line is :mpiifort -I./INC/ -I$HOME/MARSLIB/usr/mpi/include/ -module $HOME/MARS/COMPILE_MARS/WTEST-BIDON/OBJETS/ -O2 -i4 -r8 -ftz -fpe0...
View Articleifort creates empty ~/intel/ism/rm
Whenever I run ifort it creates an empty directory tree "~/intel/ism/rm". I found https://software.intel.com/en-us/forums/topic/509368 forum thread from a year ago where Steve Lionel claims this should...
View ArticleGetter functions for arrays
Hi,I wonder if there exists an easy way to implement a getter function for an array valued attribute?For instance, one has a derived item, for example the extensions of a process grid (pgrid). As this...
View Articlecompatibility
The Compatibility of Intel Compiler for OS X and Xcode indicates Intel Composer XE 2013 SP1 is not compatible with OS X version 10.10. Really? This software is 2 years old and cannot be used anymore?...
View ArticleCompiler runs into problem compiling F77 code
I'm trying to compile Fortran 77 code (T-matrix code) on a Linux system using Intel Parallel Studio XE 2015 for Fortan and I have the recurring problem of too many errors.I'm using: ifort...
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Intel 14 and 15 compiler bug
I've attached a very small example that exposes a bug in 14.0.3 and 15.0.2. In the example, a module declares a derived type and a F2003 structure constructor for it. In a later procedure the module...
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Bad results from assignment to allocatable array (with realloc_lhs)
I've attached a small example that clearly demonstrates that bad results are obtained from assignment to an (unallocated) allocatable array. I am using the required realloc_lhs switch. The problem...
View ArticleComplex logarithm
Hello all,according to the "Intel Fortran Libraries Reference", the natural logarithm of a complex number should give complex values x+i*y with -pi < y <= pi. But:write(*,*)...
View ArticleCoarray implementation of QR decomposition?
I am wondering if there exists a coarray implementation of the QR decomposition somewhere, in library or source form. We are probably years away from a true coarray implementation of LAPACK, for...
View Articlecannot find 'ifort' after installing parallel_studio_xe_2015_update3 on ubuntu
I am an university student. I have just downloaded and installed the parallel_studio_xe_2015_update3. But in the directory '/opt/intel/composer_xe_2015/bin', I only find 'icc', but not 'ifort'. Have I...
View ArticleFORTRAN: Opening and reading data from a network location
I am trying to run a simulation using FORTRAN. I have large input data at server A and I want to read input files from server A and run my simulation on server B. I am using a FORTRAN subroutine to...
View ArticleFortran Wavelet Transforms
Hey guys, I am trying to find some online library or code that computes Daubechies wavelet coefficients, for image processing purposes (horizontal, vertical and diagonal detail coefficients). Is there...
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Problems with pack intrinsic function: catastrophic error and bad results
I noticed that the subroutine sprsin in numerical recipes produces catastrophic error if compiled with ifort 15. The problem seems due to the linesa%jcol=pack(spread(arth(1,1,n),1,n),mask)It is...
View ArticleData passing w/ mixed programming f2008+python.
I would like to have your suggestions for the following task.I'm developing a F2008 code that has to call a python script (specifically a special function in the mpmath lib) which will generate an...
View ArticleWRF 3.7 / catastrophic error: **Internal compiler error: segmentation...
Hi,The following error has been reported by the compiler while compiling the file module_bl_temf.F (WRFV3/phys/module_bl_temf.F) from WRF V3.7 (http://www2.mmm.ucar.edu/wrf/src/WRFV3.7.TAR.gz) model...
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