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Questions tagged sse

28 questions

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9
votes
1
answers

SSE reduction of float vector

c++ sum sse simd reduction
asked 2013-07-20T10:16:49.817
30
votes
1
answers

Why is my hand-tuned, SSE-enabled code so slow?

c++ optimization opencv sse
asked 2013-03-30T22:41:37.450
8
votes
1
answers

How to store lower or higher values from AVX/AVX2(YMM) register to memory like the SSE movlps/movhps does?

x86 sse simd avx avx2
asked 2013-01-30T08:23:14.873
18
votes
1
answers

AVX VMOVDQA slower than two SSE MOVDQA?

assembly sse bignum arbitrary-precision avx
asked 2012-12-20T15:37:04.703
34
votes
4
answers

print a __m128i variable

c assembly sse simd intrinsics
asked 2012-11-06T18:34:33.680
9
votes
0
answers

attempt to convert SSE2 Fast Corner score code to ARM Neon

arm sse neon computer-vision
asked 2012-08-07T22:08:33.923
18
votes
5
answers

Is it possible to cast floats directly to __m128 if they are 16 byte aligned?

c++ c alignment sse intrinsics
asked 2012-08-01T12:57:14.093
10
votes
4
answers

How to optimize "u[0]*v[0] + u[2]*v[2]" code line with SSE or GLSL

c++ c optimization sse glm-math
asked 2012-06-20T17:37:50.030
12
votes
6
answers

How to allocate 16byte memory aligned data

c memory sse icc
asked 2012-06-18T13:59:59.910
12
votes
2
answers

Is it okay to mix legacy SSE encoded instructions and VEX encoded ones in the same code path?

assembly x86 sse avx
asked 2012-06-02T21:21:41.913
22
votes
5
answers

SIMD prefix sum on Intel cpu

c++ sse simd prefix-sum
asked 2012-05-14T16:44:36.573
9
votes
3
answers

Efficient complex arithmetic in x86 assembly for a Mandelbrot loop

c assembly x86 sse complex-numbers
asked 2012-04-26T08:39:20.163
10
votes
2
answers

Check XMM register for all zeroes

c++ sse simd intrinsics
asked 2012-04-16T14:08:15.900
18
votes
3
answers

How to dump all the XMM registers in gdb?

x86 gdb simd sse cpu-registers
asked 2012-03-30T19:52:43.650
23
votes
3
answers

Fastest way to do horizontal vector sum with AVX instructions

x86 sse simd avx vector-processing
asked 2012-03-19T18:11:59.497
45
votes
4
answers

Using AVX intrinsics instead of SSE does not improve speed -- why?

c++ performance gcc sse avx
asked 2012-01-19T10:47:08.820
60
votes
2
answers

Using AVX CPU instructions: Poor performance without "/arch:AVX"

c++ performance visual-studio-2010 sse avx
asked 2011-10-20T17:40:25.700
13
votes
8
answers

Speed up float 5x5 matrix * vector multiplication with SSE

c++ vectorization matrix-multiplication sse simd
asked 2011-07-07T22:04:27.080
9
votes
2
answers

Accepted XX:UseSSE values for Java JVM?

java jvm sse
asked 2011-04-05T02:22:51.060
17
votes
5
answers

Does rewriting memcpy/memcmp/... with SIMD instructions make sense?

performance sse simd
asked 2011-03-16T05:21:57.310
18
votes
3
answers

Why does does SSE set (_mm_set_ps) reverse the order of arguments

c++ c simd sse intrinsics
asked 2011-03-08T20:30:15.977
19
votes
1
answers

Do I get a performance penalty when mixing SSE integer/float SIMD instructions

c assembly sse simd intrinsics
asked 2011-02-14T19:28:05.790
14
votes
8
answers

Compute the absolute difference between unsigned integers using SSE

c++ unsigned sse
asked 2010-08-01T04:52:52.033
13
votes
6
answers

What is the fastest way to test if a double number is integer (in modern intel X86 processors)

c optimization assembly x86 sse
asked 2009-12-22T04:09:05.633
10
votes
8
answers

SIMD programming languages

programming-languages sse simd ispc
asked 2009-09-13T12:50:45.267
56
votes
5
answers

SSE SSE2 and SSE3 for GNU C++

c++ optimization simd sse sse2
asked 2009-03-19T07:32:22.857
12
votes
3
answers

How to get GCC to use more than two SIMD registers when using intrinsics?

gcc assembly x86 sse simd
asked 2008-09-23T22:49:22.830
173
votes
4
answers

What is the meaning of "non temporal" memory accesses in x86

x86 sse assembly
asked 2008-08-31T20:18:34.113