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Questions tagged [amd-processor]

Advanced Micro Devices (AMD) microprocessors.

Use this tag for questions which rely on the underlying CPU technology. Examples may include questions about CPU microcodes, CPU caching, and OpenGL/OpenCL compiling or rendering.

419 questions
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Is this "should not happen" crash an AMD Fusion CPU bug?

My company has started having a number of customers call in because our program is crashing with an access violation on their systems. The crash happens in SQLite 3.6.23.1, which we ship as part of our application. (We ship a custom build, in order…
Bradley Grainger
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14 answers

Run Android studio emulator on AMD processor

Android newbie. My processor is AMD, not Intel, so I can't open the emulator in Android studio. This answer has the comment: 'You can run the ARM (non Intel) emulator image. From your list, just choose a non Intel emulation.' They don't explain…
Bobby King
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3 answers

Why is Numpy with Ryzen Threadripper so much slower than Xeon?

I know that Numpy can use different backends like OpenBLAS or MKL. I have also read that MKL is heavily optimized for Intel, so usually people suggest to use OpenBLAS on AMD, right? I use the following test code: import numpy as np def…
theV0ID
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6 answers

Do Intel and AMD processor have the same assembler?

The C language was used to write Unix to achieve portability—the same C language program compiled using different compilers produces different machine instructions. How come the Windows OS is able to run on both Intel and AMD processors?
user136281
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9 answers

Does my AMD-based machine use little endian or big endian?

I'm going though a computers system course and I'm trying to establish, for sure, if my AMD based computer is a little-endian machine? I believe it is because it would be Intel-compatible. Specifically, my processor is an AMD 64 Athlon x2. I…
Frank V
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29
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7 answers

How much should I worry about the Intel C++ compiler emitting suboptimal code for AMD?

We've always been an Intel shop. All the developers use Intel machines, recommended platform for end users is Intel, and if end users want to run on AMD it's their lookout. Maybe the test department had an AMD machine somewhere to check we didn't…
timday
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1 answer

How many instructions are there on x86 today?

I am trying to learn up to date x86 assembly all from old 386 base instructions through all the sse additions up until now. I read some things like SSE5 counts 170 new instructions - and I became urged to know how many of them there are presently…
user2214913
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3 answers

Running Android emulator on computer with AMD processor

Is there anyway to run Android virtual devices through Eclipse while operating with AMD processor? I had Genymotion for a while and despite it worked, it was too much of a kerfuffle to dabble with it.
EmppuTheEngineer
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3 answers

Intel MKL vs. AMD Math Core Library

Does anybody have experience programming for both the Intel Math Kernel Library and the AMD Math Core Library? I'm building a personal computer for high performance statistical computations and am debating on the components to buy. An appeal of…
Tristan
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1 answer

Which cache mapping technique is used in intel core i7 processor?

I have learned about different cache mapping techniques like direct mapping and fully associative or set associative mapping, and the trade-offs between those. (Wikipedia) But I am curious which one is used in Intel core i7 or AMD processors…
Subhadip
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Visual Studio: Xamarin - Error starting Android Emulator

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup Operating System: Windows 10 Pro Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator. When I click on…
amrit
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5 answers

How to use Android Emulator on AMD Ryzen (Android Studio)?

I try to build Android app from Android Studio. I tried to install HAXM from Android Studio installer but I've an error: Intel Virtualization Technology is already enabled in my BIOS. And the Hyper-V is already disabled on Windows 10.
pirmax
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15
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Where is the Write-Combining Buffer located? x86

How is the Write-Combine buffer physically hooked up? I have seen block diagrams illustrating a number of variants: Between L1 and Memory controller Between CPU's store buffer and Memory controller Between CPU's AGUs and/or store units Is it…
Kay
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How to explain poor performance on Xeon processors for a loop with both sequential copy and a scattered store?

I stumbled upon a peculiar performance issue when running the following c++ code on some Intel Xeon processors: // array_a contains permutation of [0, n - 1] // array_b and inverse are initialized arrays for (int i = 0; i < n; ++i) { array_b[i] =…
Jonas Ellert
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Why is the p-state status MSR on ryzen not changing?

I am trying to detect the current p-state of my cpu. I have noticed that the p-state status MSR (C001_0063) always returns 2 on my ryzen 1700x system, even if the core is clearly not in that state. I think it used to work with the initial bios…
Jester
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