simd

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Difference between MOVDQA and MOVAPS x86 instructions?

I\'m looking Intel datasheet: Intel® 64 and IA-32 Architectures Software Developer’s Manualand I can\'t find the difference between[详细]

2023-03-19 19:09 分类：问答
Are there SIMD instructions to speed up checksum calculations?

I\'m going to have to code a very basic checksum function, something like: char sum(const char * data, const int len)[详细]

2023-03-19 15:28 分类：问答
How to move 128-bit immediates to XMM registers

There already is a question on this, but it was closed as \"ambiguous\" so I\'m opening a new one - I\'ve found the answer, maybe it will help others too.[详细]

2023-03-19 05:46 分类：问答
How do you get the ICC compiler to generate SSE instructions within an inner loop?

I have an inner loop such as this for(i=0 ;i<n;i++){ x[0] += A[i] * z[0]; x[1] += A[i] * z[1]; x[2] += A[i] * 开发者_StackOverflow社区z[2];[详细]

2023-03-18 10:49 分类：问答
Is arm_neon.h missing all float16_t types?

I\'m using NEON SIMD instruction to write a part of an Android app, targ开发者_如何学编程eting Cortex A8 processors. According to this reference manual, NEON supports 16-bit and 32-bit floats, that is[详细]

2023-03-17 06:43 分类：问答
Tweaking MIT's bitcount algorithm to count words in parallel?

I want to use a version of the well known MIT bitcount algorithm to count neighbors in Conway\'s game of life using SSE2 instructions.[详细]

2023-03-14 22:57 分类：问答
efficient way to convert scatter indices into gather indices?

I\'m trying to write a stream compaction (take an array and get rid of empty elements) with SIMD intrinsics. Each iteration of the loop processes 8 elements at a time (SIMD width).[详细]

2023-03-11 12:52 分类：问答
SIMD C++ library

开发者_开发知识库I use Visual Studio with DiretX XNA math library. Now, I use GNU compiler collection. Advise me a SIMD math library with a good documentation.Eigen http://eigen.tuxfamily.org/index.ph[详细]

2023-03-07 12:02 分类：问答
Any Lisp extensions for CUDA?

I just noted that one of the first languages for the Connection-Machine of W.D. Hillis was *Lisp, an extension of Common Lisp with parallel constructs. The Connection-Machine was a massively parallel[详细]

2023-03-07 05:39 分类：问答
How to compare __m128 types?

__m128 a; __m128 b; How to code a != b ? what to use: _mm_cmpneq_ps or _mm_cmpneq_ss ? 开发者_高级运维How to process the result ?[详细]

2023-03-07 03:46 分类：问答