(Some of this is x86 and Intel-specific. Most of the key points apply to any CPU that does hardware page walks. I also discuss ISAs like MIPS that handle TLB misses with software.) Modern x86 microarchitectures have dedicated page-walk hardware. They can even speculatively do page-walks to load TLB entries before a TLB miss actually … Read more
A branch instruction is not inherently slower than any other instruction. However, the reason you heard that branches should avoided is because modern CPUs follow a pipeline architecture. This means that there are multiple sequential instructions being executed simultaneously. But the pipeline can only be fully utilised if it’s able to read the next instruction … Read more
Stack is always in RAM. There is a stack pointer that is kept in a register in CPU that points to the top of stack, i.e., the address of the location at the top of stack.
Custom values for Emulation.setCPUThrottlingRate can be set right in Chrome, but you need to open a Dev Tools window on the Dev Tools window to change the setting programatically. Open Dev Tools; make sure it is detached (open in its own window). Open Dev Tools again on the Dev Tools window from step 1 using … Read more
Use the WMI module + Open Hardware Monitor + its WMI interface described here. Sample code: import wmi w = wmi.WMI(namespace=”root\OpenHardwareMonitor”) temperature_infos = w.Sensor() for sensor in temperature_infos: if sensor.SensorType==u’Temperature’: print(sensor.Name) print(sensor.Value)
The optimal number of threads to use depends on several factors, but mostly the number of available processors and how cpu-intensive your tasks are. Java Concurrency in Practice proposes the following formal formula to estimate the optimal number of threads: N_threads = N_cpu * U_cpu * (1 + W / C) Where: N_threads is the … Read more
Accessing raw CPUID information is actually very easy, here is a C++ class for that which works in Windows, Linux and OSX: #ifndef CPUID_H #define CPUID_H #ifdef _WIN32 #include <limits.h> #include <intrin.h> typedef unsigned __int32 uint32_t; #else #include <stdint.h> #endif class CPUID { uint32_t regs[4]; public: explicit CPUID(unsigned i) { #ifdef _WIN32 __cpuid((int *)regs, (int)i); … Read more
A socket is the physical socket where the physical CPU capsules are placed. A normal PC only have one socket. Cores are the number of CPU-cores per CPU capsule. A modern standard CPU for a standard PC usually have two or four cores. And some CPUs can run more than one parallel thread per CPU-core. … Read more
It is a computer Architecture question which entails a long answer. I will try to keep it very simple on the risk of being inaccurate. You basically self-answered your question by asking do CUDA core handle branch prediction, the answer is NO. A CPU core has to handle each single operation a computer does, calculation, … Read more
The flag has a default of true and it will be set to false if the detection fails, so you can simply use +PrintFlagsFinal to see if it is used: My Laptop without AES-NI: C:\>”C:\Program Files\Java\jdk1.7.0_51\bin\java” -XX:+PrintFlagsFinal -version | find “UseAES” bool UseAES = false {product} bool UseAESIntrinsics = false {product} java version “1.7.0_51” Java(TM) … Read more