preview of NVIDIA Visual Profiler

[Simon_Green]

The visual profiler uses the same performance counters that are available in the command line profiler (see the “CUDA_Profiler” file in the CUDA doc directory).

The profilers can’t automatically calculate GFLOPs performance, for that you need to count the number of FLOPs in your kernel.

[ryta1203]

The profilers can’t automatically calculate GFLOPs performance, for that you need to count the number of FLOPs in your kernel.

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I was afraid of that. This method is very impractical for large software with many large arithmetically intense kernels.

Is this a feature/problem that anyone else is looking at for the moment?

[e.ping]

this doesnt seem to work for me. i get:

=== Start profiling for session 'Session1' ===

Start program 'D:/program/MATLAB/R2007b/bin/matlab.exe' run #1 ...

Program run #1 completed.

Start program 'D:/program/MATLAB/R2007b/bin/matlab.exe' run #2 ...

Program run #2 completed.

Start program 'D:/program/MATLAB/R2007b/bin/matlab.exe' run #3 ...

Program run #3 completed.

Error -94 in reading profiler output.

Minimum expected columns (method,gputime,cputime,occupancy) not found in profiler output file.

i run win xp pro, and as can be seen form the output i use matlab r2007b.

any suggestions?

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Adding the “quit” command at the end of Matlab script will remove this error.

[sandeepan1986]

Unfortunately not right now, unless you can generate an executable from the matlab code (I think matlab can do this, but I’m no expert).

I have already filed a feature request for profiling external programs as is supported by some CPU profilers.

Mark

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i think the profiler shoud also show the time taken by individual functions for a kernel as kernel can be quite complex and optimizing it is very tough job…

[Eri_Rubin]

Just my guess but it seems that would be hard to do seeing that functions inside a kernel are inlined.

:huh:

i think the profiler shoud also show the time taken by individual functions for a kernel as kernel can be quite complex and optimizing it is very tough job…

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[sandeepan1986]

Just my guess but it seems that would be hard to do seeing that functions inside a kernel are inlined.

:huh:

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I have declared all the functions used by my kernel to be noinline

[E.D_Riedijk]

I think that is ignored by the compiler. Functions are always inlined.

[gpugpu]

Is there any command-line profiler available for cuda?

Thanks.

[espe]

Is there any tutorial on how to use this tool?

[defy]

Hi!
I’m using CUDA 2.0 Beta2 on Vista 32.
Whatever I do with profiler I can’t manage it to show counters (gld coalesce, gld uncoalesce …) .
I only see the Method,GPU time,CPUtime,Occupancy columns.

Is it possible to get other data?

[Sanjiv.Satoor]

Hi!

I’m using CUDA 2.0 Beta2 on Vista 32.

Whatever I do with profiler I can’t manage it to show counters (gld coalesce, gld uncoalesce …) .

I only see the Method,GPU time,CPUtime,Occupancy columns.

Is it possible to get other data?

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Profiler counters and timestamps are currently not supported on Windows Vista. (This is mentioned under the “known issues” section of the Windows release notes.

[santyhyammer]

Profiler counters and timestamps are currently not supported on Windows Vista. (This is mentioned under the “known issues” section of the Windows release notes.

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Well, considering that you cannot buy WinXP anymore ( it reached 2-months ago its end-of-selling period ), I would say to add full Vista compatibility to the profiler it should be a priority. Do you plan to release a patch soon for the timestamps and counters, pls?

[chrismc]

I’m having trouble with the profiler.

See [url=“The Official NVIDIA Forums | NVIDIA”]http://forums.nvidia.com/index.php?showtopic=76838[/url]

my sytem is 64 bit linux/SUSE Enterprise 10.1

[chrismc]

I’m having trouble with the profiler.

See http://forums.nvidia.com/index.php?showtopic=76838

my sytem is 64 bit linux/SUSE Enterprise 10.1

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PLEASE IGNORE.

I’ve just found I need to add -noprompt in the arguments box of session settings.

[not8]

Well, considering that you cannot buy WinXP anymore ( it reached 2-months ago its end-of-selling period ), I would say to add full Vista compatibility to the profiler it should be a priority. Do you plan to release a patch soon for the timestamps and counters, pls?

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I would also greatly appreciate Vista support for the profiler.

[davem_de]

Vista support would be great!

Need timestamps and counters immediately, but i have onlv Vista.
Shall I install XP or wait for the next Release of the Profiler?

[Jambo135]

You can profile a mex file with the CUDA profiler, if you have a matlab script with no gui.

Just follow these steps in the session setup.

1. in Launch specify “/usr/local/bin/matlab”

2. In Working directory select the directory of your matlab script

3. in Arguments: -nojvm -nosplash -r name_of_matlab_script (with no .m)

Start the profiler.

It worked fine for me under Linux.

In Windows you need to have the -wait option in the arguments, but -nojvm and -nosplash are not required (though will cut down on overhead).