paxcommunication.blogg.se - How to run linpack benchmark on linux

This installs the ssh client and scp among others things as well as man, which is always handy to have:

Disable and stop the firewall (I'm assuming no internet access for your cluster, of course): chkconfig iptables off service iptables stop.

Enable NIC by editing NIC config file (/etc/sysconfig/network-scripts/ifcfg-eth0) (I used the text install and it seems to leave the NIC disabled, but it's quicker to navigate from the ILO interface):.

Install CentOS using a minimum install to ensure that the smallest amount of packages get installed.

The servers I've used only have a single 74 GB hard drive, a single NIC, 8 GB of RAM and 2 quad core CPUs, so that the cluster has 16 cores and 16 GB of RAM.

Make sure to keep an eye on the temperatures as Linpack generates excessive amount of stress like never seen before.I have set up a two node cluster, but these instructions could be used for any number of nodes. The bootable version is considered to be the most superior as the Linux SMP kernel is a lot more sensitive to hardware instabilities than Microsoft Windows. Linpack Xtreme is available for Windows, Linux, and as a bootable media. Modern hardware requires modern stress testing methodology with support for the latest instructions sets. LinX, IntelBurnTest, OCCT use outdated Linpack binaries from 2012. Linpack Xtreme was created because Prime95 is no longer effective like it used to be. Linpack uses partial pivoting to assure the accuracy of the results.

The generalization is in the number of equations (N) it can solve, which is not limited to 1000. Linpack solves a dense (real*8) system of linear equations (Ax=b), measures the amount of time it takes to factor and solve the system, converts that time into a performance rate, and tests the results for accuracy.

Linpack tends to crash unstable PCs in a shorter period of time compared to other stress testing applications. Best used to test stability of overclocked PCs. Linpack is a benchmark and the most aggressive stress testing software available today. Linpack Xtreme is a console front-end with the latest build of Linpack (Intel Math Kernel Library Benchmarks 2018.3.011).