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我试图了解分支预测单元如何在 CPU 中工作。我使用了papi和linux的perf事件,但这两个都没有给出准确的结果(就我的情况而言)。这是我的代码:void func(int* arr, int sequence_len){ for(int i = 0; i < sequence_len; i++){ // region starts if(arr[i]
Solved: Hi, I am confused about addresses for reading performance counters (Linux). Sorry if the questions are too basic, I'm fairly new to this! My
问使用wrmsrl和rdmsrl读取PMU计数器ENCorrected machine-check error interrupt (CMCI)是MCA的增强特性，...
I used PAPI on Linux. But, I started to use Intel PCM 2.0 because it supports Windows. I have two questions. I am not an expert on x86 instructions. (1) Source code of PCM 2.0 shows that it uses MSR register by using RDMSR instruction. I thought that RDPMC (Read Pe...
Below is typical code to read MSRs on linux.The only change for android is to the pathname.You may need to do 'modprobe msr' before running the code.Patint rdmsr_for_pat (int CPU_number, unsigned int MsrNum, unsigned long long *MsrVal){static int nodriver...
I am confused about addresses for reading performance counters (Linux). Sorry if the questions are too basic, I'm fairly new to this! My CPU is an Intel Core i7-7500U (Kaby Lake). I am running it with hyper-threading disabled, and only one core. Program A, using RDMSR: I can r...
I used PAPI on Linux. But, I started to use Intel PCM 2.0 because it supports Windows. I have two questions. I am not an expert on x86 instructions. (1) Source code of PCM 2.0 shows that it uses MSR register by using RDMSR instruction. I thought that RDPMC (Read P...