Preallocate GPU interpolant #75
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
ext/InterpolationsRegridderExt.jl
Outdated
| target_space, | ||
| coordinates, | ||
| extrapolation_bc, | ||
| zeros(target_space), |
There was a problem hiding this comment.
Why not just use adapt here?
Sbozzolo
force-pushed
the
gb/gpuitp
branch
2 times, most recently
from
43e478a
to
ffca901
Compare
The interpolants we in `Interpolations.jl` are described by two arrays: the knots and the coeffs. When `Adapt` is called on these interpolants, CuArrays are allocated on the GPU. For large data, this is inefficient. In this commit, I add a system to avoid these allocations. This is accomplished by add a dictionary to `InterpolationsRegridder`. This dictionary has keys that identify the size of the knots and coefficients and values the adapted splines. When `regrid` is called, we check if we have already allocated some suitable space in this dictionary, if not, we create a new spline, if we do, we write in place. This removes GPU allocations in the hot path (ie, the regridder is used in a time evolution with always the same data and dimensions), while also keeping the flexibility of reusing the same regridder with any input data.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Adaptallocates new arrays on the GPU. With this PR, I changeAdaptto be in place.