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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 ...
Operating system support for accessing hardware counters is needed to use PAPI. For example, prior to 2010, a Linux/x86 kernel had to be patched with a performance monitoring counters driver (perfctr link) to support PAPI. Since Linux version 2.6.32, and PAPI 2010 releases, PAPI can leverage the existing perf subsystem in Linux, and thus does ...
The hw.sensors framework is a kernel-level hardware sensors framework originating from OpenBSD, which uses the sysctl kernel interface as the transport layer between the kernel and the userland. As of 2019 [update] , the framework is used by over a hundred device drivers in OpenBSD to export various environmental sensors, with temperature ...
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.
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 functional blocks (the application-specific integrated circuit display driver, 2- and 3D acceleration and video decoding and encoding) are separate semiconductor intellectual property (SIP) blocks on the chip, since hardware devices vary substantially; some portable media players require a display driver that accelerates video decoding, but ...
A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to know precise details about the hardware being used. A driver communicates with the device through the computer bus or communications