Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

High overhead on KNL for LULESH2.0 #92

Open
twang15 opened this issue Jan 18, 2018 · 0 comments
Open

High overhead on KNL for LULESH2.0 #92

twang15 opened this issue Jan 18, 2018 · 0 comments

Comments

@twang15
Copy link

twang15 commented Jan 18, 2018 •
edited

@tgamblin @davidbeckingsale
Caliper overhead on KNL (LULESH2.0) is 20%. What would be the possible cause?

#configurations
CALI_CONFIG_PROFILE = serial-trace
ICC 17.0.4
Linked w/ iomp5 or gomp (results similar)

#threads | O3 | O3 w/ caliper instrumentation | overhead
------------ | -------------
8 | 33.77 | 42.18 | -0.199
16 | 21.55 | 25.44 | -0.153
32 | 21.81 | 24.84 | -0.122
64 | 24.83 | 28.13 | -0.117
128 | 24.98 | 27.01 | -0.075
256 | 30.72 | 32.92 | -0.067
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@twang15