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Old 07-23-08, 02:56 PM   #1
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Join Date: Sep 2007
Location: Hungary
Posts: 92
Question NVPerfKit startup difficulties

I'm running kernel
I just installed the PerfKit 6 for Linux 32 that comes with the beta version driver NVIDIA-Linux-x86-173.13-NVPerfKit.runpkg1.run.

I call NVPMInit() that returns 0 (=NVPM_OK). However, immediately after that my NVPM* calls return 3 (=NVPM_ERROR_NOT_INITIALIZED). (I called NVPMEnumCounters resp. NVPMShutdown and both return 3.)

I attached the C source for that and the bug report logs.

Did anyone see the same problem ?
What did I do wrong ?
Is there any specific Linux kernel version that PerfKit should be used with ?

(PS. I posted this on the developer forums but the chance to get a response there seems to be quite low Maybe here... Maybe someone from nVidia...)
Attached Files
File Type: gz nvidia-bug-report.log.gz (42.0 KB, 156 views)
File Type: gz nvcounters.c.gz (458 Bytes, 143 views)
tzp is offline   Reply With Quote
Old 08-04-08, 05:37 PM   #2
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Default Re: NVPerfKit startup difficulties

I have the same problem you have described. I am running ubuntu hardy,
linux 2.6.24-16-generic on 64-bit.

I bypassed the enum and tried to iterate through the counters, there are none returned.
My c++ code also runs on Windows Vista 32 bit, and it works. (gets 200+ counters)

If I try running ./OGLPerfHarness in the samples directory, and press "p", analysis "not available".

I looked into the source code of the nvidia kernel driver, and I didn't see any instrumentation-specific code. Looks like a problem with the closed-source nvidia opengl libraries.
chris2718 is offline   Reply With Quote
Old 08-26-08, 02:59 PM   #3
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Default Re: NVPerfKit startup difficulties

Just a quick "me too" on this. I tried to use the instrumented driver with Bugle, but it throws an error every time I try to use an NV:* statistic.

I guess this is progress though since the last time I tried the instrumented driver it wouldn't compile without modifications on newer kernels and hung X when I started it.
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