Failed to run example from "CUDA by Example"

[Conrado Miranda]

Hi there!

I just installed gpuocelot and I'm very satisfied with its current
status. Congratulations to you all.

As a test, I tried to run the examples from the book "CUDA by
Example", available at http://developer.nvidia.com/cuda-example-introduction-general-purpose-gpu-programming.

The first few examples ran perfectly, but the example named "ray.cu",
it failed while running with the following message:

terminate called after throwing an instance of
'executive::RuntimeException'
what(): Cvta instruction cannot convert from specified address
space to generic addresses
Aborted

The information that I can think right now that could be useful are:
- The code for "ray.cu" is available at http://pastebin.com/G8sH57V4.
- The configuration file is the one available at the source code and
put at http://pastebin.com/PTmwGZSN.
- The script I used to compile that example is the same I used for the
other examples that worked and is available at http://pastebin.com/kLMS935K.
- "OcelotConfig -v" outputs "2.1.1764" and I'm at revision 1773 of
SVN.

The example's code is correct, as it runs perfectly at a GTX580.

I'd be glad to provide any other information you guys need.

Thanks.

[Gregory Diamos]

Hi,

Sorry about this, I think the issue is that an optimization pass was
committed
to the trunk that wasn't ready for prime-time. Try disabling
hoistSpecialValues
in your configure.ocelot file. The sample file in the SVN trunk should
be updated
now.

Regards,

Greg

[Conrado Miranda]

Hi,

That example ran perfectly after that change. I'll finish running them
(may take a while, but I'll do my best) and report any other problem.

Thank you very much!

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[Jimmy]

Hi,

I also ran these examples with gpuocelot and found that those using
lib_glut ran extremely slow. I could Ctrl+C to terminate them and get
traces with 32768 warps. Is that correct?

Thank you!

On Feb 25, 11:45 am, Conrado Miranda <miranda.conr...@gmail.com>
wrote:

> Hi,
>
> That example ran perfectly after that change. I'll finish running them
> (may take a while, but I'll do my best) and report any other problem.
>
> Thank you very much!
>
> On Fri, Feb 24, 2012 at 11:39 PM, Gregory Diamos
>
>
>
>
>
>
>
> <gregory.dia...@gatech.edu> wrote:
> > Hi,
>
> > Sorry about this, I think the issue is that an optimization pass was
> > committed
> > to the trunk that wasn't ready for prime-time.  Try disabling
> > hoistSpecialValues
> > in your configure.ocelot file. The sample file in the SVN trunk should be
> > updated
> > now.
>
> > Regards,
>
> > Greg
>
> > On 02/20/2012 09:02 AM, Conrado Miranda wrote:
>
> >> Hi there!
>
> >> I just installed gpuocelot and I'm very satisfied with its current
> >> status. Congratulations to you all.
>
> >> As a test, I tried to run the examples from the book "CUDA by
> >> Example", available at

> >>http://developer.nvidia.com/cuda-example-introduction-general-purpose....

>
> >> The first few examples ran perfectly, but the example named "ray.cu",
> >> it failed while running with the following message:
>
> >> terminate called after throwing an instance of
> >> 'executive::RuntimeException'
> >>   what():  Cvta instruction cannot convert from specified address
> >> space to generic addresses
> >> Aborted
>
> >> The information that I can think right now that could be useful are:

> >> - The code for "ray.cu" is available athttp://pastebin.com/G8sH57V4.

> >> - The configuration file is the one available at the source code and

> >> put athttp://pastebin.com/PTmwGZSN.

[Gregory...@gatech.edu]

Are you trying to generate traces?  You can turn most is them on/off in configure.ocelot.

Also expect at least a 40x slowdown compared to native execution on a CPU without tracing on.  It is an emulator.

Gregory Diamos

-----Original message-----

From: Jimmy <panjans...@gmail.com>
To: gpuocelot <gpuo...@googlegroups.com>
Sent: Tue, Apr 10, 2012 16:25:17 GMT+00:00
Subject: [gpuocelot] Re: Failed to run example from "CUDA by Example"

Hi,

I also ran these examples with gpuocelot and found that those using
lib_glut ran extremely slow. I could Ctrl+C to terminate them and get
traces with 32768 warps. Is that correct?

Thank you!

On Feb 25, 11:45 am, Conrado Miranda

wrote:
> Hi,
>
> That example ran perfectly after that change. I'll finish running them
> (may take a while, but I'll do my best) and report any other problem.
>
> Thank you very much!
>
> On Fri, Feb 24, 2012 at 11:39 PM, Gregory Diamos
>
>
>
>
>
>
>

[Jianming Pan]

Yes, I'm trying to gen the traces. And I completed after set the bitmap down to 256x256.

Thank you very much!

2012/4/11 gtg...@mail.gatech.edu <Gregory...@gatech.edu>

--
Best regards,

Jianming Pan (潘健明)

Master Student

Institute of Microelectronics, Tsinghua Univ., 100084 Beijng, China

Faculty of Engineering, K.U.Leuven, B-3001 Leuven, Belgium

[Gregory Diamos]

I think that the X86 traces used to drive macsim will generate traces with entries for each warp.  Each of the trace
generators can use a different format, so some of them may be tiny and some of them may be very large.  You can
control which ones are enabled in the configure.ocelot file.

Greg