The Amsterdam Density Functional (ADF) package is a highly requested application in our work with IBM benchmarks. However, there was no official Linux on POWER version of the ADF package in 2006. So, we ported and tuned the ADF package to our IBM p575+ Linux platform.

This IBM Redpaper describes our porting experience and compares the performance of the ADF package on both Linux and AIX to demonstrate the impact of different interconnects, file systems, and kernels. Our results show that the ADF package has great performance and scalability on both platforms. In addition, we include tips for troubleshooting and achieving better performance. There is now an official Linux on POWER version available from SCM.