If OpenCL isn't detected on your system, the OpenCL backend won't be used.
Did you check if OpenCL is properly installed in your system with 'clinfo'?
On Thu, Mar 30, 2017 at 3:48 PM, Shailesh Tripathi <
shailesh.tripathi.ec...@itbhu.ac.in> wrote:
> Hello,
> Wait, I think there is some confusion. The argument for OpenCL compilation
> is "rt -z1" or "rt -z".
> I think it is the second one.
> Since "*rcc"* has not been ported yet, I am just creating "*sph*" and
> using "rt -z" command:
> When I try this, it says
>
>
>
>> *Planning to run with 8 processors*
>>
>> */usr/brlcad/dev-7.26.1/bin/rt -M -z -u*
>>
>> *opendb model;*
>> *tree /home/**path_to_build**/mick1.g shapes.r; *
>>
>
>> *rt: rt_dirbuild(model) failure *
>>
> *Raytrace failed.*
>>
>
> Is there any example (with the commands) to run opencl raytracing?
>
> Regards
> Shailesh
>
>
> Shailesh Tripathi
> B.Tech. Part-IV
> Electronics Engineering
> IIT-BHU (Varanasi)
>
> On Thu, Mar 30, 2017 at 7:49 PM, Shailesh Tripathi <
> shailesh.tripathi.ec...@itbhu.ac.in> wrote:
>
>> Hello,
>> Sorry for the late reply. As I said I got busy with my exams.
>>
>>> You should see a consistent difference in performance, but this would
>>> require compiling and installing both with and without OpenCL support to
>>> make sure the same compilation options are being used.
>>>
>> I don't exactly understand by what you meant by compiling in OpenCL.
>> Right now, I am just following the raytrace tutorial. The command are as
>> follows (n order):
>>
>> i
>>>
>>>
>>>
>>>
>>>
>>> *n sph.s sph 4 4 4 3in rcc.s rcc 4 4 0 0 0 4 3draw sph.s rcc.sr shapes.r
>>> u sph.s u rcc.smater shapes.r plastic 0 255 0 0B shapes.rrt*
>>>
>> This gives the raytrace output in the frame buffer
>> But in the output log there is nothing like "PREP" as you said.
>> Also for openCL raytracing, I am simply using "rt -z1" in place of the
>> "rt" command. But still the output log is exact same with no signs of
>> OpenCL compilation.
>>
>> Please tell me how and what exactly to do for OpenCL compilation.
>>
>> Regards
>> Shailesh
>>
>>
>> Shailesh Tripathi
>> B.Tech. Part-IV
>> Electronics Engineering
>> IIT-BHU (Varanasi)
>>
>> On Tue, Mar 28, 2017 at 9:24 PM, Vasco Alexandre da Silva Costa <
>> vasco.co...@gmail.com> wrote:
>>
>>> On Tue, Mar 28, 2017 at 2:57 AM, Christopher Sean Morrison <
>>> brl...@mac.com> wrote:
>>>
>>>>
>>>> > On Mar 27, 2017, at 8:01 PM, Shailesh Tripathi <
>>>> shailesh.tripathi.ec...@itbhu.ac.in> wrote:
>>>> >
>>>> > Finally, now all the errors are resolved. deviceQuery' is working
>>>> fine with CUDA which hints that OpenCL is also setup.
>>>> > Now, as I told the 'rt' command and 'rt and 'rt -z1' gives
>>>> quantitatively equal results.
>>>> > How can I make sure that 'rt -z1' is making use of GPU?
>>>>
>>>> You should see a consistent difference in performance, but this would
>>>> require compiling and installing both with and without OpenCL support to
>>>> make sure the same compilation options are being used.
>>>>
>>>> Another tell-tale sign is that the OpenCL path does not yet handle
>>>> booleans. If you render the havoc sample model, does it look like the
>>>> rendering here http://brlcad.org/wiki/User:Vasco.costa/GSoC15/logs ?
>>>>
>>>> Last but not least, it should say "Compiling OpenCL programs...” and
>>>> “OCLPREP” instead of “PREP” in the output.
>>>>
>>>
>>> Yes, the easiest way to know for sure is to look at the console log
>>> output.
>>>
>>> --
>>> Vasco Alexandre da Silva Costa
>>> PhD in Computer Engineering (Computer Graphics)
>>> Instituto Superior Técnico/University of Lisbon, Portugal
>>>
>>> ------------------------------------------------------------
>>> ------------------
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>>>
>>>
>>
>
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>
--
Vasco Alexandre da Silva Costa
PhD in Computer Engineering (Computer Graphics)
Instituto Superior Técnico/University of Lisbon, Portugal
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