MISSING nvToolsExt64_1.lib

gpucoder can't see nvToolsExt64_1.lib even if it exist ad it's declared correctly in the environement variable NVTOOLSEXT_PATH.

I tried to disable the firewall obtaining the same problem.

What to do ?

I get error:

Error using gpucoder.profile (line 41)
Unable to find NVTX library 'nvToolsExt64_1.lib'. Ensure that the NVTX SDK installation contains the
specified library file.

when I type :

cfg = coder.gpuConfig('exe');
cfg.GpuConfig.MallocMode = 'discrete';
gpucoder.profile('myH_MEX',ARGS{1},'CodegenConfig',cfg,...
    'CodegenArguments','-d profilingdir','Threshold',0.001);

---

coder.checkGpuInstall

Compatible GPU : PASSED (Warning: Support for GPU devices with Compute Capability 5.2 will be removed in a future MATLAB release. For more information on GPU support, see GPU Support by Release.)

CUDA Environment : PASSED

Runtime : PASSED

cuFFT : PASSED

cuSOLVER : PASSED

cuBLAS : PASSED

cuDNN Environment : PASSED (Warning: Deep learning code generation has been tested with cuDNN v7.6. The provided cuDNN library v8.6 may not be fully compatible.)

Basic Code Generation : PASSED

Basic Code Execution : PASSED

ans =

struct with fields:

gpu: 1

cuda: 1

cudnn: 1

tensorrt: 0

basiccodegen: 1

basiccodeexec: 1

deepcodegen: 0

deepcodeexec: 0

tensorrtdatatype: 0

profiling: 0

---

C:\Windows\system32>nvcc --version

nvcc: NVIDIA (R) Cuda compiler driver

Copyright (c) 2005-2019 NVIDIA Corporation

Built on Wed_Oct_23_19:32:27_Pacific_Daylight_Time_2019

Cuda compilation tools, release 10.2, V10.2.89

[Justin Hontz]

This particular error message is thrown when environment variable NVTOOLSEXT_PATH is found, but the the profiler cannot find the library file. Under NVTOOLSEXT_PATH, you should be able to find the library file under the lib\x64 directory; can you verify that this is the case? If not, please try reinstalling NVIDIA Nsight Systems. (It may also be necessary to install Nsight Visual Studio Edition.)

[Emiliano Rosso]

that's the problem! Because the library file exists but Matlab can't see it. That's the reason why I tried to disable the firewall whitout results!

NSight Compute,NSight System & NSight Visual Studio Edition are all installed. It doesn't say " file is wrong" , it could be a version problem , it doesn't see it .

[Emiliano Rosso]

I'll try to login Admin like....

[Justin Hontz]

Please try running the following code in MATLAB:

>> nvtxPath = getenv('NVTOOLSEXT_PATH');
>> libListing = dir(fullfile(nvtxPath, 'lib', 'x64'));

This is essentially the same code that the current implementation of gpucoder.profile uses to locate the library file. Can you confirm whether 'nvToolsExt64_1.lib' is included as an entry in the resulting struct?

[Emiliano Rosso]

Thanks!

nvtxPath = getenv('NVTOOLSEXT_PATH');
'C:\Program Files\NVIDIA Corporation\NvToolsExt\;C:\Program Files\NVIDIA Corporation\NvToolsExt\lib\x64;'
libListing = dir(fullfile(nvtxPath, 'lib', 'x64'))
0×1 empty struct array with fields:
name
folder
date
bytes
isdir
datenum

SOLVED!

setenv('NVTOOLSEXT_PATH','C:\Program Files\NVIDIA Corporation\NvToolsExt\');

If libListing calls 'lib' & 'x64' you don't need to declare it!

I changed the environement variable too manually!

What is weird is that this was the starting setting but I probably missed something ...

in gpucoderSetup all is OK & in coder.checkGpuInstall it returns :

gpu: 1
cuda: 1
cudnn: 1
tensorrt: 0
basiccodegen: 1
basiccodeexec: 1
deepcodegen: 0
deepcodeexec: 0
tensorrtdatatype: 0
profiling: 0

Why does it give me profiling: 0 ?

When I run :

cfg = coder.gpuConfig('exe');
cfg.GpuConfig.MallocMode = 'discrete';
gpucoder.profile('tvd_sim2_MEX',ARGS{1},'CodegenConfig',cfg,...
    'CodegenArguments','-d profilingdir','Threshold',0.001);

it works but now I have a new problem:

nvprof.exe stopped working

UnknownServerPort_Diagnostics - 0
UnknownServerPort_Diagnostics - 1
UnknownServerPort_Diagnostics - 2

Error using gpucoder.profile (line 41)
Could not parse server port number from application output:

To manually test launching the executable run the command line:
C:\Users\redmello\Documents\MATLAB\TEMP\Prof_Out_Pattern\profilingdir\sil\tvd_sim2_MEX.exe -port 0
-blocking 1.

---

mex -setup

MEX configured to use 'Microsoft Visual C++ 2019 (C)' for C language compilation.

C:\Windows\system32>nvcc --version

nvcc: NVIDIA (R) Cuda compiler driver

Copyright (c) 2005-2019 NVIDIA Corporation

Built on Wed_Oct_23_19:32:27_Pacific_Daylight_Time_2019

Cuda compilation tools, release 10.2, V10.2.89

[Emiliano Rosso]

SOLVED adding :

C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.2\extras\CUPTI\lib64

to PATH environement variable.

But now I have a new problem running:

cfg = coder.gpuConfig('exe');
cfg.GpuConfig.MallocMode = 'discrete';
gpucoder.profile('tvd_sim2_MEX',ARGS{1},'CodegenConfig',cfg,...
    'CodegenArguments','-d profilingdir','Threshold',0.001);

I get error:

Error using gpucoder.profile (line 41)
Incorrect class for expression 'x': expected 'double' but found 'coder.PrimitiveType'.

What to do?

[Justin Hontz]

coder.checkGpuInstall by default does not do any profiling checks. To perform these checks, you need to set the Profiling property of the coder.gpuEnvConfig object to true before passing the config to coder.checkGpuInstall.

Since your original question was resolved, can you please create a new question or create a technical support ticket for your follow-up question?

[Emiliano Rosso]

Sure!

Thanks!

Answer 1

[Justin Hontz]

The issue was that the NVTOOLSEXT_PATH environment variable was set to the wrong value.