I have a working environment where $OMP_NUM_THREADS=1 is enforced (login node), but the system has many more available threads. It seems that when -O2 and -O3 optimizations are included in my compile command, the optimizations hard code instructions assuming OpenMP thread availability based on the host system, or at least the optimizations prevent the graceful handling of $OMP_NUM_THREADS. On execution, I get a segfault on entering __kmp_enter_single().
Hi all. I'm extensively utilizing the "-check uninit" feature of the compiler, however with thousands of routines and seemingly infninte code paths (including some which are rarely executed), it would be much more helpful if the compiler had a compile-time check for use of uninitialized variables. What I'm looking for is something similar to gcc's "-Wuninitialized" option.
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I have a problem with an old software that used to work with ifort 11 and does not anymore with recent versions.
This software is written in fortan 77 and uses an old trick to manage its memory. This trick leads to the arrays out of their bounds so don’t be shocked!
The idea is, at the beginning of the execution to allocate a big array with a C malloc and to calculate the distance from this array and a reference array (called refarr in the following). To get data with the good type in the allocated array, an equivalence statement is used.
<p><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 14px; line-height: normal; "> I cannot install the old version of ifort and mkl successfully with the serail number you have emailed to me ,it shows invalid serial number,where can i find the liciense to help me to use the ifort and mkl?Thanks!</span></p>
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ProductName: Mac OS X
Intel(R) Fortran Intel(R) 64 Compiler XE for applications running on Intel(R) 64, Version 14.0 Build 20131010
Copyright (C) 1985-2013 Intel Corporation. All rights reserved.
When I compile the Fortran program:
consider the case where a single thread (say, the master) has a private vector x and submits a number of tasks which update different coefficients of x. Here is a simple (fortran) code that does this
I know that there are some strict restrictions on what can appear in the source= clause of the allocate statement, but I was surprised when trying to allocate a component of a derived type via sourced allocation where a sibling component (which is allocated and defined) resulted in the following error with ifort 18.104.22.168 Build 20130314:
I just installed the Intel(R) Fortran Composer XE 2013 SP1 Update 1 in LinuxMint 16 64-bit (derived from Ubuntu 13.10). When installing I was told that this OS was not recognized as valid by the installer, but I decided to continue anyway (Ubuntu 13.04 was officialy supported).
Thanks to the guidelines provided in:
the installation finished without any problem.
First off, I think I mistakenly posted this under "Open source OpenMP":
I am using the Intel Composer Fortran Compiler 14.0.0.
What is the purpose of the separate monitor thread OpenMP creates?