Skip to content

Refresh the device copy of num_gps when a moving immersed boundary is updated #1887

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

Merged
sbryngelson merged 3 commits into from
Sep 18, 2026
+6 −0
Merged

Refresh the device copy of num_gps when a moving immersed boundary is updated #1887

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
362525f
Refresh the device copy of num_gps when a moving immersed boundary is…
sbryngelson Sep 17, 2026
36a7fa0
Merge branch 'master' into fix/ib-num-gps-device-refresh
sbryngelson Sep 17, 2026
d57a09f
Merge remote-tracking branch 'origin/master' into fix/ib-num-gps-devi…
sbryngelson Sep 17, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions src/simulation/m_ibm.fpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -966,6 +966,12 @@ contains
call nvtxStartRange("COMPUTE-GHOST-POINTS")
! recalculate the ghost point locations and coefficients
call s_find_num_ghost_points(num_gps)
! num_gps is a declare-target module variable and bounds every device loop over the ghost points; it is
! copied to the device once in s_ibm_setup, so without this refresh the kernels keep the setup-time count
! as a moving body's count changes: stale list entries beyond the current count are written as wall
! states into cells that are now fluid, new ghost cells are left uncorrected, and which entries those are
! depends on the atomic fill order -- nondeterministic results run to run (#1886).
$:GPU_UPDATE(device='[num_gps]')
call s_find_ghost_points(ghost_points)
call nvtxEndRange

Expand Down
Loading