Is it possible to monitor Floating Point Unit?

[abhinand5]

I just wanted to ask if it is possible to count Floating Point Events using this tool as I couldn't find anything from the readme about this.

[opcm]

PCM supports custom event programming. You can check which floating point events are suported by your CPU using pmu-query.py and then program them using pcm-core utility.

[abhinand5]

Thanks for your quick response.

I am new to this, so please bear with me.

I have 3 questions for you:

1. I compiled the WinMSRDriver into msr.sys and put it inside the same directory as precompiled binaries. Getting the following error could you please help me?
   

2. Running the python script also gives an error?
   

3. Should I customize the source code inside PCM-Core_Win folder or the pcm-core.cpp file in main directory? It would be great if you can let me know how to customize the core to include the counter I need.

[opcm]

Q1: did you sign the driver? This link can be helpful. Alternatively use the third-party winring driver as described in the windows how-to.

Q2: thanks for reporting this issue! For the Windows platform please replace ['pcm-core.exe -c'] with ['pcm-core.exe', '-c'] in pmu-query.py

Q3: no changes are required. With pmu-query.py you should be abe to search for floating point events (search for "FP") and then pass the event descriptions to pcm-core.exe

For example for my CPU:

.\pcm-core.exe -e cpu/umask=0x02,event=0xC7,name=FP_ARITH_INST_RETIRED.SCALAR_SINGLE/

[abhinand5]

Thanks a lot @opcm

IT WORKED!!! 😃

[abhinand5]

@opcm
Just a quick question. What do the letters in the output mean? K, M, G, B etc...

[opcm]

these are multpliers
K: *1024
M: *1024 *1024
etc