topic Re: Advisor gets stuck while running map in Analyzers

Advisor gets stuck while running map

preeth — Tue, 20 Aug 2024 05:26:12 GMT

I am trying to run Memory access pattern in Advisor, previously I have used advisor to run roofline and it was fine.

I ran Advisor using this command to collect map:

./Advisor --collect map --project-dir ../../../map -- /path_to_my_executable

My executable ran fine all test cases passed but advisor gets stuck at loading result.

I tried with different advisor version 2023.2.0 and the latest 2024 one both get stuck at the same point.

I'd really appreciate it if you could help me. Thank you

Re: Advisor gets stuck while running map

preeth — Tue, 20 Aug 2024 07:58:30 GMT

Hi,

It took some time nearly an hour, but I got the results. The results turned out to be empty. Then I ran survey first then map, this time the results made sense. One thing I noticed is memory access information was not available for all loops. Does it only record if the loop runs for more than n times?

Best Regards

preeth

Re: Advisor gets stuck while running map

yuzhang3_intel — Tue, 20 Aug 2024 09:21:57 GMT

Could you try with one simple example first? like matrix sample.

$ advisor -collect map -- /home/xxx/intel/vtune/samples/matrix/matrix

I use Advisor 2024.2.1, it can work fine.

Re: Advisor gets stuck while running map

preeth — Tue, 20 Aug 2024 09:52:49 GMT

Thanks for the response.

Map works fine, but if only ran map I am unable to see anything in gui.

If I run survey+map I am able to see memory access patterns for certain loops, so is this the case generally? i.e, we need to run survey first then map.

Re: Advisor gets stuck while running map

yuzhang3_intel — Tue, 20 Aug 2024 11:05:35 GMT

The user needs to choose the correct analysis perspective depending on the workload type, such as vectorization, roofline, threading, etc. The advisor tool will give steps per perspective. For example, if you want to profile threading below, you can get recommended steps.

For your case, survey + map is necessary; I think the map should rely on the survey report.

Re: Advisor gets stuck while running map

preeth — Tue, 20 Aug 2024 11:15:01 GMT

Thanks very much