| Re: [eigen] glibc's malloc (x86-64) 16 byte aligned? |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] glibc's malloc (x86-64) 16 byte aligned?
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Mon, 25 Jan 2010 12:57:12 -0500
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I don't understand?
on linux x86-64, malloc only returns 8-byte aligned pointers, and this
page confirms it.
Benoit
2010/1/25 Rohit Garg <rpg.314@xxxxxxxxx>:
> Hi all,
>
> http://www.gnu.org/s/libc/manual/html_node/Aligned-Memory-Blocks.html
>
> I was quite surprised to come across this. I never knew this was the
> case. I wrote a quick, dirty, non-comprehensive, non-exhaustive test
> and all of the malloc'ed pointers were 16 byte aligned.
>
> May be it's worth trying to run the eigen's test suite on linux x86-64
> assuming that the malloc is 16 byte aligned?
>
> Your thoughts?
>
> --
> Rohit Garg
>
> http://rpg-314.blogspot.com/
>
> Senior Undergraduate
> Department of Physics
> Indian Institute of Technology
> Bombay
>
>
>