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[gnuastro-devel] [bug #56259] Arithmetic: more time operating with int32
[gnuastro-devel] [bug #56259] Arithmetic: more time operating with int32 than float32
Fri, 3 May 2019 03:02:59 -0400 (EDT)
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Summary: Arithmetic: more time operating with int32 than
Project: GNU Astronomy Utilities
Submitted by: infantesainz
Submitted on: Fri 03 May 2019 07:02:57 AM UTC
Severity: 3 - Normal
Item Group: Addition(s)
Assigned to: None
Discussion Lock: Any
After some test in which very simple operation (subtraction of images) were
done, the results were that considering `int32' data type was more time
consumption than using `float32'.
astarithmetic im3.fits im4.fits float32 float32 -
finished in 0.111564. While
astarithmetic im3.fits im4.fits int32 int32 -
finished in 0.120998.
Note that images are different names but the size is the same.
That difference in time makes no sense and this overhead along big projects
will cause a lot of extra time in processing data.
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Raul Infante-Sainz <=