Re: [beagleboard] Re: bbx15: v4.4.x + OpenCL

2016-10-29 Thread Robert Nelson 
On Sat, Oct 29, 2016 at 5:43 PM, Christopher Hansen  wrote:
> OK, I found my problem and I fixed it.  I had a "bad PPA" I needed to remove 
> in order for the update_kernal.sh script to complete properly.  Here's what I 
> get from the example code:
>
> This example computes y[i] = M[i] * x[i] + C on single precision floating 
> point arrays of size 2097152
> - Computation on the ARM is parallelized across the A15s using OpenMP.
> - Computation on the DSP is performed by dispatching an OpenCL NDRange kernel 
> across the compute units (C66x cores) in the compute device.
>
> Running.
>
> Average across 5 runs:
> ARM (2 OpenMP threads) : 0.007877 secs
> DSP (OpenCL NDRange kernel): 0.007614 secs
> OpenCL-DSP speedup : 1.034475
>
>
> Is that the expected result?

Yeah, i was getting around 1.1x on v4.4.x

When i last tried ti's sdk (v4.4.x based on the Alpha -X15 (no support
for the rev b yet)) i was getting around 0.7/0.8 "speedup"...

Back in v4.1.x (about a year ago, with the alpha-x15) i thought it was
around 3x/4x speedup

So there's definitely a speed regression, (maybe we are in a slow
clock state for the dsp?)

But it atleast it's working again... ;)

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] Re: bbx15: v4.4.x + OpenCL

2016-10-29 Thread Christopher Hansen 
OK, I found my problem and I fixed it.  I had a "bad PPA" I needed to remove in 
order for the update_kernal.sh script to complete properly.  Here's what I get 
from the example code:

This example computes y[i] = M[i] * x[i] + C on single precision floating point 
arrays of size 2097152
- Computation on the ARM is parallelized across the A15s using OpenMP.
- Computation on the DSP is performed by dispatching an OpenCL NDRange kernel 
across the compute units (C66x cores) in the compute device.

Running.

Average across 5 runs: 
ARM (2 OpenMP threads) : 0.007877 secs
DSP (OpenCL NDRange kernel): 0.007614 secs
OpenCL-DSP speedup : 1.034475


Is that the expected result?

Chris

On Saturday, October 29, 2016 at 11:08:48 AM UTC-7, robert nelson wrote:
> On Sat, Oct 29, 2016 at 11:53 AM, Robert Nelson  
> wrote:
> > On Sat, Oct 29, 2016 at 11:40 AM, Christopher Hansen  
> > wrote:
> >> I get this error:
> >>
> >> modprobe: FATAL: Module cmemk not found in directory 
> >> /lib/modules/4.4.23-ti-r51
> >>
> >> Any suggestions?
> >
> > Well, that's expected on 4.4.23-ti-r51 ;)
> >
> > Like i mentioned:
> >
> > cd /opt/scripts/tools/
> > git pull
> > sudo ./update_kernel.sh
> > sudo reboot
> 
> For background, turns out the cmemk module as written doesn't like to
> be loaded on a kernel built for THUMB2..
> 
> That was one of the big changes i made last week..
> 
> Regards,
> 
> -- 
> Robert Nelson
> https://rcn-ee.com/

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Re: [beagleboard] Re: bbx15: v4.4.x + OpenCL

2016-10-29 Thread Christopher Hansen 
On Saturday, October 29, 2016 at 11:08:48 AM UTC-7, robert nelson wrote:
> On Sat, Oct 29, 2016 at 11:53 AM, Robert Nelson  
> wrote:
> > On Sat, Oct 29, 2016 at 11:40 AM, Christopher Hansen  
> > wrote:
> >> I get this error:
> >>
> >> modprobe: FATAL: Module cmemk not found in directory 
> >> /lib/modules/4.4.23-ti-r51
> >>
> >> Any suggestions?
> >
> > Well, that's expected on 4.4.23-ti-r51 ;)
> >
> > Like i mentioned:
> >
> > cd /opt/scripts/tools/
> > git pull
> > sudo ./update_kernel.sh
> > sudo reboot
> 
> For background, turns out the cmemk module as written doesn't like to
> be loaded on a kernel built for THUMB2..
> 
> That was one of the big changes i made last week..
> 
> Regards,
> 
> -- 
> Robert Nelson
> https://rcn-ee.com/

I followed those steps, but I am on the 4.4.23-ti-r51 kernel.  What kernel are 
you using?  How do I get there?

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Re: [beagleboard] Re: bbx15: v4.4.x + OpenCL

2016-10-29 Thread Robert Nelson 
On Sat, Oct 29, 2016 at 11:53 AM, Robert Nelson  wrote:
> On Sat, Oct 29, 2016 at 11:40 AM, Christopher Hansen  
> wrote:
>> I get this error:
>>
>> modprobe: FATAL: Module cmemk not found in directory 
>> /lib/modules/4.4.23-ti-r51
>>
>> Any suggestions?
>
> Well, that's expected on 4.4.23-ti-r51 ;)
>
> Like i mentioned:
>
> cd /opt/scripts/tools/
> git pull
> sudo ./update_kernel.sh
> sudo reboot

For background, turns out the cmemk module as written doesn't like to
be loaded on a kernel built for THUMB2..

That was one of the big changes i made last week..

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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Re: [beagleboard] Re: bbx15: v4.4.x + OpenCL

2016-10-29 Thread Robert Nelson 
On Sat, Oct 29, 2016 at 11:40 AM, Christopher Hansen  wrote:
> I get this error:
>
> modprobe: FATAL: Module cmemk not found in directory 
> /lib/modules/4.4.23-ti-r51
>
> Any suggestions?

Well, that's expected on 4.4.23-ti-r51 ;)

Like i mentioned:

cd /opt/scripts/tools/
git pull
sudo ./update_kernel.sh
sudo reboot

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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