Category "intel"

Can 2 processes run on same enclave in intel sgx?

I know intel sgx supports running multiple threads on one enclave. But I'curious that whether I can use fork to run 2 processes on one enclave?

How to enable VT-x from linux command line

Is there a way to enable VT-x from linux (not Windows) command line without having to reboot and enter the BIOS? Would be very useful since I don't have access

Intel oneapi detect if I'm on FPGA

Is there any way to detect via CMake whether an FPGA accelerator is available or not ? I'd like to do something like if (FPGA_AVAILABLE or FPGA_EMULATOR_ON)

How to make Intel GPU available for processing through pytorch?

I'm using a laptop which has Intel Corporation HD Graphics 520. Does anyone know how to it set up for Deep Learning, specifically Pytorch? I have seen if you ha

What does this i386 os code mean? The code is for resetting the system

/* jump to reset vector. esp := 0 */ int main(int argc, char **argv) { PRINT("reset\n"); _eflags = 0; // interrupt disabled __asm__ __volatile__ ("\

Get the handle of the driver using GUID in python

How to call a driver using GUID as their input to get the path and handle of the driver

Intel oneAPI dpcpp compiler with google test

I'm kinda new to the world of Intel's HPC toolchain and I'm facing some troubles making even simple DPC++ application to work when gtest is used as a testing fr

OneAPI installation Failed

I have Visual studio 2019 and 2022 installed with Intel OneAPI toolkit previously. It installed and worked flawlessly before. When I tried to install a newer ve

Why didn't x86 implement direct core-to-core messaging assembly/cpu instructions?

After serious development, CPUs gained many cores, gained distributed blocks of cores on multiple chiplets, numa systems, etc but still a piece of data has to p

Is it possible to popcount __m256i and store result in 8 32-bit words instead of the 4 64-bit using Wojciech Mula algorithm's?

I have recently discovered that AVX2 doesn't have a popcount for __m256i and the only way I found to do something similar is to follow the Wojciech Mula algori

Do UEFI DXE Drivers operate in real-mode? What about "ring -2" or "ring -3" code?

I asked a question referencing a mode sometimes referred to as ring -2 (System Management Mode) which can be exploited to create rootkits. There's also even a r

Correctly disable Hardware Prefetching with MSR in Skylake

I am trying to disable hardware prefetching on my machine: CPU family: 6 Model: 78 Model name: Intel(R) Core(TM) i5-6200U CPU

intel i225-v linux driver(ubuntu 20.04)

after kernel downgrade, every device drivers doesn't work. I want to download i225-v linux driver, and search this pagehttps://www.intel.co.kr/content/www/kr/ko

Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures?

I'm doing micro-optimization on a performance critical part of my code and came across the sequence of instructions (in AT&T syntax): add %rax, %rbx mov %r

How to configure IOMMU protection for my hypervisor?

I'm developing my own bare-metal hypervisor over intel vt-x technology. My goal is to make it inaccessible to the OS I'm running over my hypervisor in any way,

Micro fusion and addressing modes

I have found something unexpected (to me) using the Intel® Architecture Code Analyzer (IACA). The following instruction using [base+index] addressing add

How to detect P/E-Core in Intel Alder Lake CPU?

Which logical processor belongs to the P-core group and which to E-core group? My first idea was to just check the base clock for each logical processor and the