Benchmarking: Intel Linpack - Revision history

Matthew at 12:10, 3 September 2014

2014-09-03T12:10:34Z

Matthew at 12:10, 3 September 2014

2014-09-03T12:10:00Z

Matthew at 11:49, 3 September 2014

2014-09-03T11:49:53Z

Matthew at 11:46, 3 September 2014

2014-09-03T11:46:44Z

Matthew at 11:46, 3 September 2014

2014-09-03T11:46:01Z

Matthew: Created page with "Make sure Hyperthreading is set to on in BIOS and this is run on Linux (normally a separate SSD with Centos on) Head to Intel`s site to get the latest linpack libraries: htt..."

2014-09-03T10:24:29Z

Created page with "Make sure Hyperthreading is set to on in BIOS and this is run on Linux (normally a separate SSD with Centos on) Head to Intel`s site to get the latest linpack libraries: htt..."

New page

Make sure Hyperthreading is set to on in BIOS and this is run on Linux (normally a separate SSD with Centos on)

Head to Intel`s site to get the latest linpack libraries:

https://software.intel.com/en-us/articles/intel-math-kernel-library-linpack-download

Download the latest tgz for linux. This can potentially be done using wget (below is just a example, a newer version maybe available):

<syntaxhighlight>
wget http://registrationcenter.intel.com/irc_nas/4547/l_lpk_p_11.2.0.003.tgz
</syntaxhighlight>

Then untar:

<syntaxhighlight>
tar -xvf l_lpk_p_11.2.0.003.tgz
</syntaxhighlight>

The above should create a new folder of the untarred files, navigate into this and find main linpack x64 program:

<syntaxhighlight>
cd l_lpk_p_11.2.0.003/linpack/benchmarks/linpack

./xlinpack_xeon64
</syntaxhighlight>

← Older revision		Revision as of 12:10, 3 September 2014
Line 1:		Line 1:
−	Make sure Hyperthreading is ~~set to on~~ in BIOS and this is run on Linux ~~(normally a separate SSD with Centos on)~~	+	== Prerequisites ==
		+
		+	Make sure Hyperthreading is '''enabled''' in BIOS and this is run on Centos. Normally I have one SSD for windows and one for the Linux session saves time.

	Head to Intel`s site to get the latest linpack libraries:		Head to Intel`s site to get the latest linpack libraries:

@@ Line 37: / Line 37: @@
 Linpack should then run after this.
-To check option another session in centos using keyboard shortcut "alt+f2" you should be presentated with another login and password screen.
+To check that linpack is stressing the CPU`s and memory correctly. Open another session in Centos using keyboard shortcut "alt+f2" you should be presented with another login and password screen.
-Login and type "top" this will show the process manager and if Linpack is loading as expected you should see the CPU plus Memory usage rise up to match the problem size. Depending on system Spec I would aim this to be as high as possible normally this is something between 80-100% CPU and memory usage.
+Login and type "top" this will show the process manager. If Linpack is stressing the system as expected then you will see CPU plus Memory usage rise up to match the problem size.
-Why not 100%? If going for between 90-100% usage I found the system can become unstable or the OS will just kill the process. This is down to the OS requiring CPU time and ram of its own. If Linpack uses it all up, the OS cannot run.
+Depending on system Specification will vary the problem size required to make this as high as possible. Normally this is something between 80-100% CPU and memory usage.

@@ Line 27: / Line 27: @@
 Then you should see:
-"Input data or print help? Type [data]/help :"
+Number of equations to solve (problem size):(here you put in your calculated problem size)
 Leading dimension of array:(here you put in your calculated problem size)
-"Number of equations to solve (problem size):(here you put in your calculated problem size)"
+Number of trails to run: (input the number of runs you want 3 for example)
-"Leading dimension of array:(here you put in your calculated problem size)"
+Data allignment value (in Kbytes): 128
-"Number of trails to run: (input the number of runs you want 3 for example)"
+</syntaxhighlight>
 Linpack should then run after this.

@@ Line 12: / Line 12: @@
 wget http://registrationcenter.intel.com/irc_nas/4547/l_lpk_p_11.2.0.003.tgz
 </syntaxhighlight>
 Then untar:

@@ Line 20: / Line 20: @@
 <syntaxhighlight>
-cd l_lpk_p_11.2.0.003/linpack/benchmarks/linpack
+cd linpack_11.2.3/benchmarks/linpack/
 ./xlinpack_xeon64
 </syntaxhighlight>