NAME

       likwid-topology - print thread, cache, NUMA and Nvidia GPU topology

SYNOPSIS

       likwid-topology [-hvgcCG] [-V level] [-o output_file]

DESCRIPTION

       likwid-topology  is  a  command line application to print the thread and cache topology on multicore x86,
       ARM and POWER processors and Nvidia GPUs.  Used with mono spaced fonts it can draw the processor topology
       of a machine in ASCII art. Beyond topology likwid-topology determines the clock of a processor and prints
       detailed information about the caches hierarchy.  When compiled with NVIDIA_INTERFACE=true  in  config.mk
       and the CUDA/CUPTI library reachable at runtime, likwid-topology prints information about the Nvidia GPUs
       in the system.

OPTIONS

       -h, --help
              prints a help message to standard output, then exits.

       -v, --version
              prints version information to standard output, then exits.

       -V, --verbose <level>
              sets the verbosity level of LIKWID's topology backend. Possible levels range from 0 to 3.

       -g     prints  topology  information  in ASCII art. Best viewed with monospaced font. The GPU topology is
              not printed.

       -c, --caches
              prints detailed information about cache hierarchy

       -C, --clock
              measures and output the processor clock. This involves a longer run time of likwid-topology.

       -G, --gpus
              prints detailed information about the Nvidia GPUs in the system (if compiled with Nvidia support)

       -o, --output <file>
              write the output to file instead of stdout.  Likwid applies filter scripts according  to  filename
              suffix.   Currently  available  scripts  are  csv,  xml and json.  You can place additional filter
              scripts in /usr/share/likwid/filter.

AUTHOR

       Written by Thomas Gruber <thomas.roehl@googlemail.com>.

BUGS

       Report Bugs on <https://github.com/RRZE-HPC/likwid/issues>.

SEE ALSO

       likwid-perfctr(1), likwid-features(1), likwid-pin(1),

likwid-5                                           26.07.2022                                 LIKWID-TOPOLOGY(1)