Re: [Discuss-gnuradio] how to test sse2 support using cmake
On 09/20/2012 09:37 AM, Kyle Zhou wrote:
> Thanks Nick. Yes, I would like to migrate to volk and avoid all the
> hassles. Need to take some time to learn volk first. Can I assume
> volk can perform most of the intrinsics of sse2? Regards KZ On
Checkout the next branch (which has the latest in volk work)
create volk/kernels/volk/volk_my_kern.h
#ifdef LV_HAVE_GENERIC
volk_my_kern_generic(params)
{
//generic c implementation
}
#endif
#ifdef LV_HAVE_SSE2
#include
//the _a means that this kernel requires aligned pointers
//otherwise use _u if it does not
volk_my_kern_sse2_a(params)
{
//call sse intrinsics here
}
#endif
--
Now just re-run cmake and build. When you include volk/volk.h you will
have access to volk_my_kern(params) and that handles the runtime selection.
Rename my_kern to follow the naming convention and contribute the work
back! :-)
-josh
> 18/09/2012, at 2:04 AM, Nick Foster wrote:
>
>> Kyle,
>>
>> This sounds like a job for VOLK!
>>
>> Seriously, sounds like your block could benefit from all the nice
>> housekeeping that Volk takes care of for you, including runtime
>> auto-detection of platform support, conditional compiling based on
>> compiler support, and alignment reporting. Consider including at
>> least the crunchy SSE core in libvolk. Check out the Volk guide in
>> the documentation for instructions.
>>
>> --n
>>
>> On Sun, Sep 16, 2012 at 9:50 PM, Kyle Zhou
>> wrote: I have a block which depends on sse2. I need to tell cmake
>> to check if the cpu support sse2 in order to determine if the sse2
>> acceleated version or a generic version should be used. This should
>> be straight forward. However, I just cannot find an example
>> CMakeLists.txt to get me a quick start. Any suggested readings?
>> thanks K Z ___
>> Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>
>
>
>
> ___ Discuss-gnuradio
> mailing list Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
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Re: [Discuss-gnuradio] how to test sse2 support using cmake
Yes, I did look at it. but that is too overwhelming to me so far. need to work harder :( On 17/09/2012, at 9:40 PM, Robert McGwier wrote: > How about looking at the libvolk components and see how SSE is done and mimic? > > On Sep 17, 2012 12:51 AM, "Kyle Zhou" wrote: > I have a block which depends on sse2. I need to tell cmake to check if the > cpu support sse2 in order to determine if the sse2 acceleated version or a > generic version should be used. > This should be straight forward. However, I just cannot find an example > CMakeLists.txt to get me a quick start. > Any suggested readings? thanks > K Z > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to test sse2 support using cmake
Thanks Nick. Yes, I would like to migrate to volk and avoid all the hassles. Need to take some time to learn volk first. Can I assume volk can perform most of the intrinsics of sse2? Regards KZ On 18/09/2012, at 2:04 AM, Nick Foster wrote: > Kyle, > > This sounds like a job for VOLK! > > Seriously, sounds like your block could benefit from all the nice > housekeeping that Volk takes care of for you, including runtime > auto-detection of platform support, conditional compiling based on compiler > support, and alignment reporting. Consider including at least the crunchy SSE > core in libvolk. Check out the Volk guide in the documentation for > instructions. > > --n > > On Sun, Sep 16, 2012 at 9:50 PM, Kyle Zhou wrote: > I have a block which depends on sse2. I need to tell cmake to check if the > cpu support sse2 in order to determine if the sse2 acceleated version or a > generic version should be used. > This should be straight forward. However, I just cannot find an example > CMakeLists.txt to get me a quick start. > Any suggested readings? thanks > K Z > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to test sse2 support using cmake
Kyle, This sounds like a job for VOLK! Seriously, sounds like your block could benefit from all the nice housekeeping that Volk takes care of for you, including runtime auto-detection of platform support, conditional compiling based on compiler support, and alignment reporting. Consider including at least the crunchy SSE core in libvolk. Check out the Volk guide in the documentation for instructions. --n On Sun, Sep 16, 2012 at 9:50 PM, Kyle Zhou wrote: > I have a block which depends on sse2. I need to tell cmake to check if the > cpu support sse2 in order to determine if the sse2 acceleated version or a > generic version should be used. > This should be straight forward. However, I just cannot find an example > CMakeLists.txt to get me a quick start. > Any suggested readings? thanks > K Z > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to test sse2 support using cmake
How about looking at the libvolk components and see how SSE is done and mimic? On Sep 17, 2012 12:51 AM, "Kyle Zhou" wrote: > I have a block which depends on sse2. I need to tell cmake to check if the > cpu support sse2 in order to determine if the sse2 acceleated version or a > generic version should be used. > This should be straight forward. However, I just cannot find an example > CMakeLists.txt to get me a quick start. > Any suggested readings? thanks > K Z > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] how to test sse2 support using cmake
I have a block which depends on sse2. I need to tell cmake to check if the cpu support sse2 in order to determine if the sse2 acceleated version or a generic version should be used. This should be straight forward. However, I just cannot find an example CMakeLists.txt to get me a quick start. Any suggested readings? thanks K Z ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
