Hi,
Thanks for these informative answers.
I believe those are 1-to-1 with the actual machine instructions.
This exactly is my point. Is there a simd math library which exports
vectorized functions like sin/sos/exp/log for real or complex numbers.
I mean for those not wanting to program at the
Hi,
Thanks for these informative answers.
I believe those are 1-to-1 with the actual machine instructions.
This exactly is my point. Is there a simd math library which exports
vectorized functions like sin/sos/exp/log for real or complex numbers.
I mean for those not wanting to program at the
Rohit Garg wrote:
Hi,
Thanks for these informative answers.
I believe those are 1-to-1 with the actual machine instructions.
This exactly is my point. Is there a simd math library which exports
vectorized functions like sin/sos/exp/log for real or complex numbers.
I mean for those
Hi!
I am currently struggling with the memory/cache performance of the most
used inner loops in my code. For my code, I am pretty sure that most
clock cycles it spends are related to cache miss. I used VTune and
Cachegrind to analyze the code. But all I got was the information THAT I
Hi all,
I was following the separate discussion on this list about writing
various trig functions using vector intrinsics. I googled for it. The
top few results I got were for old processors when SIMD intrinsics
were new. The gcc documentation (my version is 4.1.2) has a list of
intrinsics but no
On Wed, Dec 12, 2007 at 11:51:20PM +0530, Rohit Garg wrote:
Hi all,
I was following the separate discussion on this list about writing
various trig functions using vector intrinsics. I googled for it. The
top few results I got were for old processors when SIMD intrinsics
were new. The gcc
Hi!
The intrinsics are more or less C wrapper functions for assembler
commands. You can find a detailed description here:
http://www.intel.com/products/processor/manuals/index.htm
SSE1-3 is supported by modern AMD and Intel processors.
There are many possible improvements, but you need to
Hi,
Just found a small error.
You should exchange
__builtin_ia32_punpcklwd128(x,x)),16));
__builtin_ia32_punpckhwd128(x,x)),16));
(note the h/l).
First ..hwd, then ..lwd.
Dominik
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Hi,
You can find some doc on intrinc functions on MSDN. Information is also
valid for gnu gcc:
http://msdn2.microsoft.com/en-us/library/y0dh78ez%28VS.71%29.aspx
For library using SIMD, you can start looking BLAS on wikipedia. There is
some links on the page about libraries doing optimized linear
