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Questions tagged [intel]

For issues related to Intel semiconductor chips and assemblies, Intel architectural features and ISA extensions, and Intel chips micro-architecture.

Intel Corporation is an American multinational semiconductor chip maker corporation headquartered in Santa Clara, California, United States. Intel is the inventor of the x86 processor architecture and makes central processing units, motherboard chipsets, graphic processing units, network interface controllers and much more devices related to communications and computing.

In addition to their hardware offerings Intel also produces a variety of software including compilers, libraries for mathematical computation(Intel MKL), threading(OpenMP, Intel Performance Primatives, Threading Building Blocks), parallel communication(MPI,OFED/True Scale Infiniband Stack) and several other products included in the Intel Parallel Studio toolkit. In addition to these offerings which are widely used in HPC Intel also produces software for datacenter management and is one of the most prolific contributors to the Linux kernel.

This tag should be used for questions about Intel hardware and software.

The x86 and/or x86-64 tags are better choices for questions about assembly programming for the architecture, rather than things like performance tuning specifically for Intel's implementation of x86.

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The difference between "call gate" and "Software interrupt?

These are safe, low-privilege ways to call kernel functions. I don't know the difference between the two.
donald jiang
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USB transaction error completion code for Address Device Command with BSR = 0

I am writing a driver for the xHCI and I have been having a problem with the address assignment. Here's what I am doing: Reset the controller by writing 1 to the USBCMD.HCRST and wait for USBSTATUS.CONTROLLER_NOT_READY flag to clear. Set the…
effendi
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VTune did not launch application correctly

When profiling remotely, Intel VTune seems can't start application correctly. I configure my target as a .sh script my vtune launch app config. And the amplex-python shows that The script successful launch, but not the app. why?amplex-python…
TCJ
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Intel vaapi error: can't connect to X server

I am using an EC2 with Ubuntu 18.04, CPU Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz, and a Nvidia Tesla T4. It seems vainfo reports a problematic setup: error: can't connect to X server! libva info: VA-API version 1.1.0 libva info:…
user1315621
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How Tasks are scheduled in a multi-core processor

I've got confused about how tasks are scheduled in a multi-core processor. Actually, different sources have different opinions. Importantly, there isn't enough document about tasks scheduling mechanism in a multi-core processor. Therefore, I decided…
A Farmanbar
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Development for iPhone on PPC-based computer

It has been said elsewhere that developing for iPhone requires an Intel-based computer, but this doesn't seem to be the case according to the few introductory Apple docs I've read. See this for example, which says merely, "To develop applications…
Brian
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What is the difference between architecture and processor?

GCC/Clang supports compilation options -march and -mcpu. What exactly is architecture in the context of -march ? What exactly is processor (cpu) in the context of option -mcpu ? What is the difference between architecture and processor(cpu)…
Pendyala
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"ValueError: numpy.ndarray size changed " while trying Intel lpot in tensorflow model

While trying out the Intel Low Precision Optimization Tool in tensorflow model, getting some value error. Please find the command I tried below: # The cmd of running ssd_resnet50_v1 bash run_tuning.sh --config=ssd_resnet50_v1.yaml…
RahilaRahi
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How does crossing a cacheline affect how loops are decoded?

Summary Basically I have noticed that many small loops suffer serious performance degregations when they cross a cache-line. This appears to be exclusive to cache line crosses, and unrelated to whether the loop crosses any other fetch block…
Noah
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Script to create static IP addresses on multiple VLAN adapters

I want to get a "first logon" script going that will auto create VLANs and set static IP's based on a CSV file that contains all the IP addresses for every workstation in the company (after a re-image is complete). I plan to start with looking into…
Mastaxx
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How to deploy OpenVINO IR model to Intel Movidius Myriadx VPU

I searched a while and could not find any documents about deploying the OpenVINO IR model directly to Intel's MyriadX VPU. My understanding is they both come from Intel, there should be a way to do this. What can I try in order to solve this?
Franva
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CPU count for Xeon processor confusion

My iMac Pro has an Intel 3GHz Xeon 10-core W-2150B processor. My understanding is that this is one CPU albeit with 10 cores. Now consider this trivial Python code:- import os print(f'Number of CPUs={os.cpu_count()}') This will emit:- Number of…
user2668284
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forrt1: severe (170): Program Exception - stack overflow

and thanks ahead of time for any help! I have compiled a program (which I did not write) and it works just fine on Mac's but when I try to execute the program on Windows I get the following error message shortly after execution of the program…
user869525
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Where are there working exdamples for QSV enabled ffmpeg filters?

I'm re-posting this question in a modified form because I'm told that stack overflow doesn't allow anyone to ask for the location of documentation. So now I'm not asking for documentation, I just want working examples of how the QSV enabled filters…
Bart Lederman
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What does it mean that an abort exception "does not permit precise location of the instruction causing the exception"?

Taken from the Intel 80386 Programmer's Reference Manual, CH9: Exceptions are classified as faults, traps, or aborts depending on the way they are reported and whether restart of the instruction that caused the exception is supported. Aborts: An…
Tortellini Teusday
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