Intel® Moderncode for Parallel Architectures

Webinar: Taking Advantage of Multi-Core

Topic: Taking Advantage of Multi-Core presented by Intel Software Product Division

Date: Tuesday, September 20, 2005

Time: 2:00 pm, Eastern Daylight Time (GMT -04:00, New York)

Event Number: 714088615

Event Address for Attendees:

Threading on Opteron-like memory systems.

In researching potential replacement systems for my desktop Ive come up with a few questions. But first, some background on what I need for a replacement system.

The application I am using has been written in FORTRAN and includes OpenMP. I am the author of the OpenMP code. The current platform is an Intel 530 with HT. The application has multiple objects each with dozens of arrays and with each array 1000s of elements long. The conversion to OpenMP is relatively straightforward. Something along the line of


DO J=1,N



Parallel Performance on Xeon


I would like to hear the Forum's opinion on a performance issue that I am facing. The application I run is called CPMD. It does ab initio molecular dynamics. It is a freeware code. In the following, I used, CPMD-3.9.2 version, lam-7.1.1 version,
Intel MKL v 8.0 (Beta), and Intel Fortran Compiler version 8.1.028. The operating
system on the Nocona is Fedora Core 4 (x86_64 version) and on the Pentium 4, it is 32-bit Mandrake 10.1. I have tried the 32-bit OS on the Nocona also, with the same performance as mentioned below.

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