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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LEARN ABOUT CENTOS
papi_hw_info_t
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)