topic Re: Intel VTune and managed code on Windows Server 2019 in Analyzers

Intel VTune and managed code on Windows Server 2019

stevenh1 — Fri, 07 Apr 2023 17:47:37 GMT

Folks,

I've used Intel VTune to profile a running process by attaching to its PID. This works great for C++ code and processes, really great. I would like to be able to do the same for C# and managed code, but when I try to attach to the process, it says it can only profile the native portion, not the managed portion of the process. It just says there was an internal error and suggests I contact support. Can anyone from Intel comment? Or anyone who's gotten this to work?

The most recent version I tried was 2023.1.

Steve

Re:Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Mon, 10 Apr 2023 06:57:33 GMT

Hi,

Thank you for posting in Intel Communities.

Could you please share the following details-

1. Sample reproducer code.

2. Exact steps and the commands used.

3. OS details.

4. Processor details.

Thanks and Regards,

Diya

Re: Intel VTune and managed code on Windows Server 2019

stevenh1 — Mon, 10 Apr 2023 13:12:08 GMT

Diya,

Not sure I can come up with a small application that shows the same behavior -- I'm not actually a C# programmer, I'm just trying to get some information on a performance problem we're having. I may try to make a simple C# program and see if I Can profile it, but that's a longer-term prospect. If Intel is interested, maybe someone can contact me about adding switches for vtune or whatnot to get more debug information from your application that would tell us what's going on. I've poked around the user appdata directories, but nothing stands out in your logs -- it seems minimal logging is done.

I've tried with intel vtune in oneapi 2023.0 and 2023.1, started via the app / start button (lower left). Same behavior. Basically I'm trying to attach to an existing C# program via attach to process and its process ID, which is started up via HPC. I'm trying a threading analysis, with either Auto or Managed as the type. It's not a simple program, it does some microsoft COM things as well as starting other C++ processes, and represents a large body of code, which I can't share.

The OS is Window Server 2019, 10.0.17763. It's in a VM, but the reported intel CPU type is

Xeon Platinum 8259CL @ 2.50 GHz, 4 cores. (and there are 4 of these on the box).

It's via Vmware, Phoenix LTD 6.00 bios, 11/12/2020, baseboard indel 440BX desktop reference.

Re:Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Mon, 17 Apr 2023 12:05:06 GMT

Hi,

Thank you for proving the details.

We are working on this issue internally and will get back to you with an update soon.

Thanks and regards,

Diya

Re:Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Wed, 19 Apr 2023 07:19:14 GMT

Hi,

Can you please share which version of .NET you are using which will help us to debug further in the case?

Thanks and regards,

Diya

Re: Re:Intel VTune and managed code on Windows Server 2019

stevenh1 — Wed, 19 Apr 2023 16:22:52 GMT

.Net 4.8 is what the code is apparently being compiled for. I don't know a lot more than that,

If you want me to report the value of various tests on the system / versions of installed libraries, etc.,

let me know what you want me to test / query / type / etc.

Steve

Re: Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Thu, 20 Apr 2023 07:31:35 GMT

Hi,

Thanks for the information.

Can you please cross-check once and share the .NET version again by following the below steps:

1) Run the command "regedit" from the console to open Registry Editor

2) Look for HKEY_LOCAL_MACHINE\Microsoft\NET Framework Setup\NDP

3) All installed .NET Framework versions are listed under NDP drop-down list

Example:

Screenshot from my workstation (I have .Net v3.5 SP1 installed):

For more information please check this document: https://learn.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed

Thanks and Regards,

Diya

Re: Intel VTune and managed code on Windows Server 2019

stevenh1 — Fri, 21 Apr 2023 10:32:28 GMT

Using the method described here:

Determine which .NET Framework versions are installed - .NET Framework | Microsoft Learn

The Release version number under the v4/Full entry is 528049, which corresponds to .Net release 4.8 .

Steve

Re:Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Fri, 21 Apr 2023 10:46:51 GMT

Hi,

Thanks for the information. We are working on this internally and will get back to you with an update soon.

Regards,

Diya

Re: Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Wed, 07 Jun 2023 07:15:04 GMT

Hi,

Sorry for the late reply.

We were able to reproduce the issue from our end.

Could you please try to give the below command and try it from your end if it works for you or not?

1. Please go to the Vtune installation directory and give the following command :

{vtune_installation_directory}\bin64\regsvr32 amplxe_samplingmrte_clrprof_1.0.dll

for eg :

C:\Program Files (x86)\Intel\oneAPI\vtune\latest\bin64\regsvr32 amplxe_samplingmrte_clrprof_1.0.dll

It will show that the .dll file succeeded

2. Then re-run the analysis.

If you face any issues please connect back to us.

If this resolves your issue, make sure to accept this as a solution.

This would help others with similar issues. Thank you!

Thanks and Regards,

Diya

Re:Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Wed, 07 Jun 2023 07:18:16 GMT

Hi,

Good day to you.

We have not heard back from you.

Is your issue resolved with the above solution?

If this resolves your issue, make sure to accept this as a solution.

This would help others with similar issues. Thank you!

Thanks and Regards,

Diya

Re:Intel VTune and managed code on Windows Server 2019

DiyaN_Intel — Wed, 14 Jun 2023 06:18:31 GMT

Hi,

Good day to you.

We have not heard back from you.

We assume that your issue is resolved with the solution provided.

This thread will no longer be monitored by Intel. If you need further assistance, please post a new question.

Regards,

Diya