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Special Forums UNIX and Linux Applications High Performance Computing IBM Hardware: Test speed of an execution core reliably. Post 302845945 by Devyn on Thursday 22nd of August 2013 04:25:33 PM
Old 08-22-2013
IBM Hardware: Test speed of an execution core reliably.

Hey Folks,

Doing simple floating point or integer arithmetic is limited since if another execution core is not busy, the system will (presumably?) assign CPU resources to where they are needed so I could be getting the performance of 2 or more cores theoretically?

Any good reliable way to benchmark this on IBM Hardware?

For example, some older Power systems come rated with higher MHz rates but I want to see that advantage, if applicable, in a simple test. Anyway to do this through the CLI without having to install anything new or big?

Cheers,
DH
 

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PAPI_hw_info_t(3)						       PAPI							 PAPI_hw_info_t(3)

NAME
PAPI_hw_info_t - Hardware info structure. SYNOPSIS
Data Fields int ncpu int threads int cores int sockets int nnodes int totalcpus int vendor char vendor_string [128] int model char model_string [128] float revision int cpuid_family int cpuid_model int cpuid_stepping int cpu_max_mhz int cpu_min_mhz PAPI_mh_info_t mem_hierarchy int virtualized char virtual_vendor_string [128] char virtual_vendor_version [128] float mhz int clock_mhz int reserved [8] Field Documentation int PAPI_hw_info_t::clock_mhz Deprecated int PAPI_hw_info_t::cores Number of cores per socket int PAPI_hw_info_t::cpu_max_mhz Maximum supported CPU speed int PAPI_hw_info_t::cpu_min_mhz Minimum supported CPU speed int PAPI_hw_info_t::cpuid_family cpuid family int PAPI_hw_info_t::cpuid_model cpuid model int PAPI_hw_info_t::cpuid_stepping cpuid stepping PAPI_mh_info_t PAPI_hw_info_t::mem_hierarchy PAPI memory heirarchy description float PAPI_hw_info_t::mhz Deprecated int PAPI_hw_info_t::model Model number of CPU char PAPI_hw_info_t::model_string[128] Model string of CPU int PAPI_hw_info_t::ncpu Number of CPUs per NUMA Node int PAPI_hw_info_t::nnodes Total Number of NUMA Nodes float PAPI_hw_info_t::revision Revision of CPU int PAPI_hw_info_t::sockets Number of sockets int PAPI_hw_info_t::threads Number of hdw threads per core int PAPI_hw_info_t::totalcpus Total number of CPUs in the entire system int PAPI_hw_info_t::vendor Vendor number of CPU char PAPI_hw_info_t::vendor_string[128] Vendor string of CPU char PAPI_hw_info_t::virtual_vendor_string[128] Vendor for virtual machine char PAPI_hw_info_t::virtual_vendor_version[128] Version of virtual machine int PAPI_hw_info_t::virtualized Running in virtual machine Author Generated automatically by Doxygen for PAPI from the source code. Version 5.2.0.0 Tue Jun 17 2014 PAPI_hw_info_t(3)
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