We experience slow calculation speed on virtual machines with use of Exe compiled by Intel Fortran XE2011.
The application was for pure numerical calculation which has many do-loops and subroutines. There was no graphics or C or C++ involved.
Our facilities and compiled Exe:
Local desktop PC
Intel i5-2400 CPU @3.10 GHz, 4 GB RAM, 32 bit operation, Window 7 service pack 1
host machine of virtual machines
Intel i7-920 @2.7 GHz, 1 processor, 1GB Ram, 64 bit operation, window XP 2003 service pack 2
by CVF ver 6.6
by Intel XE 2011 on the local PC with options of 'Maximize Speed', 'stack reserve size=10M', 'stack commit size=10M', /Qimf-arch-consistency:true /Qprec
CPU comparison (sec)
630-2498 (not stable and slow sometimes)
547-1868 (not stable and slow sometimes)
May we know what was the reason and how to solve the problem?