sse

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Optimizing variable-length encoding

I\'ve got a case where I need to compress a lot of often small values. Thus I compress them with a variable-length byte encoding (ULEB128, to be specific):[详细]

2023-03-02 11:52 分类：问答
Profiling SIMD Code

UPDATED - Check Below Will keep this as short as possible. Happy to add any more details if required. I have some sse code for normalising a vector. I\'m using QueryPerformanceCounter() (wrapped in[详细]

2023-03-01 13:01 分类：问答
Advice on optimization floating point calculations: solving a quadratic equation

I\'m working on a granular dynamics problem. The computationally expensive part is the function below that solve a quadratic equation to detect the collision of two particles.[详细]

2023-02-27 02:20 分类：问答
What does SSE instructions optimize in practice, and how does the compiler enables and use them?

SSE and/or 3D now! have vector instructions, but what do th开发者_C百科ey optimize in practice ? Are 8 bits characters treated 4 by 4 instead of 1 by 1 for example ? Are there optimisation for some ar[详细]

2023-02-24 21:53 分类：问答
Accepted XX:UseSSE values for Java JVM?

I\'d like to compare performance of an application across multiple SSE versions and have been unable to find the values that are accepted by this JVM flag. I\'m testing 0, 1, 3, and 4. I\'m most unsur[详细]

2023-02-22 05:40 分类：问答
Intel SSE: Why does `_mm_extract_ps` return `int` instead of `float`?

Why does _mm_extract_ps return an int instead of a float? What\'s the proper way to read a single float from an XMM register in C?开发者_StackOverflow[详细]

2023-02-22 04:25 分类：问答
Unhandled exception in using intrinsic

I have an application created using VC++, and wanted to explore optimization opprtunity开发者_运维技巧 by vectorizing some operations.[详细]

2023-02-20 16:17 分类：问答
Questions about X86 processors

I have two questions about X86 processors. First: What is SSE? What is it for? Is it CISC architecture?[详细]

2023-02-20 15:32 分类：问答
performance of intrinsic functions with sse

I am currently getting started with SSE. The answer to my previous question regarding SSE ( Mutiplying vector by constant using SSE ) brought me to the idea to test the difference between using intrin[详细]

2023-02-16 19:34 分类：问答
Multiplying vector by constant using SSE

I have some code that operates on 4D vectors and I\'m currently trying to convert it to use SSE. I\'m using both clang and gcc on 64b linux.[详细]

2023-02-16 11:29 分类：问答