Comments (3)
See commit 2450746 and commit 288ab97.
This is the kind of thing we will need. They can be improved even more using memcpy, writing specialized code for more specific cases, hoisting index computations, specializing areduce
for various functions, etc.
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ref, assign, reduce, and permute are now in pretty good shape. transpose needs a better algorithm. find has been improved but needs evaluation and tweaking. i think cat is ok but we need perf tests.
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Status update: test/cat_perf.j has the start of some perf tests for cat. Probably the #1 thing left to do in this issue is use memcpy
or copy_to
in ref
and assign
, which cat will benefit from. hvcat
also seems to have a bit too much overhead in the case of small (e.g. 5x5) arrays.
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Related Issues (20)
- We should have no throw `setindex!` for existing indices. HOT 2
- whether `Core.checked_dims` decides to throw depends on dimension order (for empty arrays) HOT 2
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- GC and multithreading. Strange behaviour. HOT 3
- Update main entry-point docs to use lowercase `args` HOT 2
- Segmentation fault with Distributed when --threads is set HOT 2
- Julia is incorrectly passing arguments to C on Apple M1 HOT 11
- Strange code generation with `unsafe_trunc` and dynamic dispatch HOT 15
- Segfault during push!() if using a large struct in 1.10 due to elsize overflow HOT 7
- segfault in `jl_datatype_layout` while constructing `Memory` HOT 5
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- Creating struct instances is slow when another inner constructor returns `undef` fields HOT 4
- Possible bug when constructing a string from an array of characters HOT 4
- Too long stack traces at the REPL shell mode HOT 1
- 'make test' fails for julia-1.11.0-beta1 HOT 6
- Identical calls to getindex not optimised out HOT 6
- 20x slowdown when using `Int32` instead of `Int16` HOT 2
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- `supertype` is documented to only accept a DataType when it also accepts other types HOT 2
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