LIKWID
likwid-topology

Information

likwid-topology is a command line application to print the thread and cache topology on multicore x86 processors. Used with mono spaced fonts it can draw the processor topology of a machine in ASCII art. Beyond topology likwid-topology determines the nominal clock of a processor and prints detailed informations about the caches hierarchy.

Options

Option Description
-h, –help Print help message
-v, –version Print version information
-V, –verbose <level> Verbose output during execution for debugging. Possible values for <level>:
0 Output only errors
1 Output some information
2 Output detailed information
3 Output developer information
-c, –caches Print detailed information about all cache levels
-C, –clock Measure the nominal clock frequency and print it
-g ASCII art output of the system's topology
-O Print output in CSV format (conform to RFC 4180).
-o, –output <file> Write the output to file <file> instead of stdout. According to the used filename suffix, LIKWID tries to reformat the output to the specified format.
By now, LIKWID ships with one filter script xml written in Perl and a Perl template for developing own output scripts. If the suffix is .csv, the internal CSV printer is used for file output.
If %h is in the filename, it is replaced by the host name.

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