Ifort activated optimization flags with the -O1 option
Hello,I am facing a strange behavior in terms of cumulated CPU time for a F90 code, which is radically changing when I am compiling it with O0 or O1 options. After reading the doc, I did not have seen...
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Problem with ifort 2017 and 2018
Dear colleague,I am encountering a problem with the IFORT 2018 compiler when I run the attached program (that has been extracted from a much more sophisticated project). The array named Kinetic is...
View Articleinitialize Variable in declaration section of a Subroutine
When I initialize a Variable in a Subroutine within the declaration section, the initialization is just executed in the first run of the Subroutine. In the second run, the old (saved?) value is used....
View ArticleRegression in ifort19: seg fault on allocatable array operations
Unfortunately, there was quite some regression in the beta release of ifort v19 which lets ca. 10 of our unit tests and ca. 20 of our functional tests fail with segmentation faults. We think/hope that...
View ArticleIntel Parallel Studio XE 2019 Beta Update has been released
Visit https://software.intel.com/en-us/articles/intel-parallel-studio-xe-2019-beta for more information and to register for the Intel® Parallel Studio XE 2019 BetaOverview:Switched to libfabric-1.6.1...
View Articlebug with copying a large array
Hi,I found a problem with ifort 18.0.3 on a x86_64 machine. This codePROGRAM bug IMPLICIT NONE INTEGER(SELECTED_INT_KIND(9)) :: i INTEGER(SELECTED_INT_KIND(18)) :: nobs,k8=10000000,i8 INTEGER,...
View ArticleWhy intel denied my request for Parallel Studio XE Cluster Edition for Linux
I use a University email address to request it, why intel denied mine?
View Articleifport module raise EOF error message
Hello,In my fortran code, I am using ifport module (`use ifport`); but I get the following error message when compiling with GCC-6.3.0: Fatal Error: Reading module 'ifport' at line 1 column 2:...
View Articleerror building pnetcdf 1.9.0 by impi-2018
I am trying to build the pnetcdf 1.9.0 with shared enable by impi-2018: source /users/home/opt/intel/parallel_studio_xe_2018.3.051/bin/psxevars.sh intel64 MPIF77=mpiifort MPIF90=mpiifort MPICC=mpiicc...
View ArticleError compiling using openMP threadprivate feature in Fortran
Hello,I encounter an error when compiling my software when activating openMP. This is a small program showing what I want to do :program test_threadsafety use omp_lib implicit none integer :: i, nb nb...
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Crash with allocatable structures in OpenMP loop
Hi,running the attached OpenMP code with ifort 18.0.3 results in a segmentation fault:$ ifort -fopenmp gtemplate.f90 -o gtemplate && ./gtemplate forrtl: severe (174): SIGSEGV, segmentation...
View Articleyet another bug(??) in parameterized derived type
Hi allwhen running this code:Module testmod Private Type, Public, abstract :: myroot(k) Integer, kind :: k End type myroot Type, Public, extends(myroot), abstract :: myvec Integer(kind=8) :: lb1=1,ub1...
View ArticleHow to check if a module is being used?
I would like check if a module is being used, and use conditionals to execute different commands. For exampleif (mod_algorithm_1_is_used) then call algorithm_one() else call algorithm_two() endifIs...
View ArticleMy student license expired
I have been using Intel parallel studio on a student license but it expired recently. I found on a forum that you have to register again for this product to get a new license. I have been trying to...
View Article-m64 flag doesn't seem to work
Greetings, I've compiled a project from source with the command:ifort -c ../Source/*/* -std90 -m64 Next, I try to link all the binaries with ifort * -o runfileThis generates the warning ld: warning:...
View ArticleMPI_Sendrecv setting rank to zero.
I am trying to use mpi_sendrecv, but it sets my process ranks to 0.The c version works fine. Can anyone help?Here's the code.program mpi_bug use mpi implicit none integer :: n,i integer ::...
View ArticleDoes the order of the compiler options matter?
I was debugging my Fortran code with some compiler options and, during runtime, the following error came up:forrtl: severe (194): Run-Time Check Failure. The variable 'readinputfiles_$I3' is being used...
View Articletype to class conversion in call with optional arguments
Out of curiosity, does anybody know whether the following code is standard conform or not. This was due to a minor oversight, but took a while to figure out, as the ifort compiler does not give any...
View Articledebugging and optimization on Linux
I am modifying someone else's code on Linux, and I get some runtime errors. The programs are built with the -O3 option. I wish to debug with gdb and take advantage of as many features as possible, so...
View ArticleBackwards compatibility between intel 18 and intel 17 ifort compilers
Hi,I'm using ifort (intel 18) to compile this module: module test integer:: a contains subroutine f() end subroutine end module testTo be used with this program compiled with ifort (intel 17): program...
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