topic ivf11.1.072/73 + openmp in Intel® Fortran Compiler

ivf11.1.072/73 + openmp

yeg001 — Tue, 19 Oct 2010 16:36:35 GMT

Hi, every one. Iencountered a defect when i used ivf11.1.072/73for linux. And my firend tested it ina someedition ofivf for windows. And he also find it.

I compile the file like this,
ifort 1dshggl.for -openmp
and the outputarrayew1 is differntfrom ew2.

with out "-openmp", or other versions of ivf, such as 11.1.038, it is fine.

ivf11.1.072/73 + openmp

pbkenned1 — Tue, 19 Oct 2010 21:49:41 GMT

It appears to be an -O2 or higher optimisation bug. I see correct results at -O0/-O1. Let me investigate, and I'll get back to you.

Patrick Kennedy
Intel Developer Support

ivf11.1.072/73 + openmp

yeg001 — Wed, 20 Oct 2010 05:10:39 GMT

Thank you for your reply. I had tried to simplify the code, but failed. I hope it can help intel to improve openmp and fix the defect in next update.

ivf11.1.072/73 + openmp

pbkenned1 — Wed, 20 Oct 2010 15:25:52 GMT

This has been reported to compiler engineering as defect #DPD200161914. I'll pass along updates I receive from the developers. The bug exists in Linux compiler 11.1.069 or later, and is present in v12.0 as well. The last known good Linux compiler is 11.1.064.

Patrick

ivf11.1.072/73 + openmp

yeg001 — Thu, 21 Oct 2010 13:07:49 GMT

Thank you for your help, Patrick.

ivf11.1.072/73 + openmp

pbkenned1 — Mon, 17 Jan 2011 19:06:21 GMT

This issueshould be fixed in Intel Fortran Compiler XE Update #2 (the V12.0 compiler),which we plan to release shortly. I'll update this thread with the package identifiers once the packages are posted in the download center.

Patrick Kennedy

ivf11.1.072/73 + openmp

pbkenned1 — Wed, 02 Feb 2011 19:45:48 GMT

This issue is resolved in ifort XE update #2. The packages containing the fixes are:

l_fcompxe_2011.2.137 (Linux*)

m_fcompxe_2011.2.142 (Mac OS X*)

w_fcompxe_2011.2.154 (Windows*)

Patrick Kennedy