Search results
Results From The WOW.Com Content Network
CPU-Z is a freeware system profiling and monitoring application for Microsoft Windows and Android that detects the central processing unit, RAM, motherboard chipset, and other hardware features of a modern personal computer or Android device.
When the CPUID instruction is executed under Intel VT-x or AMD-v virtualization, it will be intercepted by the hypervisor, enabling the hypervisor to return CPUID feature flags that differ from those of the underlying hardware. CPUID leaves 40000000h to 4FFFFFFFh are not implemented in hardware, and are reserved for use by hypervisors to ...
Sampling profiler with support of hardware events on several architectures. GPL Performance Application Programming Interface (PAPI) Various Library for hardware performance counters on modern microprocessors. Pin by Intel: Linux, Windows, macOS, Android Dynamic binary instrumentation system that allows users to create custom program analysis ...
With the introduction of the Pentium processor, Intel provided a pair of instructions (RDMSR and WRMSR) to access current and future "model-specific registers", as well as the CPUID instruction to determine which features are present on a particular model. Many of these registers have proven useful enough to be retained.
The number of available hardware counters in a processor is limited while each CPU model might have a lot of different events that a developer might like to measure. Each counter can be programmed with the index of an event type to be monitored, like a L1 cache miss or a branch misprediction.
All Sandy Bridge processors with one, two, or four cores report the same CPUID model 0206A7h [18] and are closely related. The stepping number cannot be seen from the CPUID but only from the PCI configuration space. The later Sandy Bridge-E processors with up to eight cores and no graphics are using CPUIDs 0206D6h and 0206D7h. [19]
The instructions below are those enabled by the BMI bit in CPUID. Intel officially considers LZCNT as part of BMI, but advertises LZCNT support using the ABM CPUID feature flag. [3] BMI1 is available in AMD's Jaguar, [5] Piledriver [6] and newer processors, and in Intel's Haswell [7] and newer processors.
The CPUID instruction can be used on both AMD and Intel CPUs to check whether the RDRAND instruction is supported. If it is, bit 30 of the ECX register is set after calling CPUID standard function 01H. [10] AMD processors are checked for the feature using the same test. [11] RDSEED availability can be checked on Intel CPUs in a similar manner.