Hello everyone,
I'm Lorenzo and I'm not a computer scientist, I have used some "Matlab" and
I am new with Go (surprisingly fast, simple and elegant).
I'm trying to do some basic operation on matrix with the "Gonum" package
using vectorization. I was curious about the speed of development and the
performance (repeat... surprisingly for me!). So I've tried to do some
measures:
*package main*
*import (*
* "fmt"*
* "time"*
* "gonum.org/v1/gonum/mat"*
*)*
*func main() {*
* p := mat.NewDense(3, 3, nil)*
* a := mat.NewDense(3, 3, []float64{*
* 1, 2, 3, 1, 2, 3, 1, 2, 3,*
* })*
* start := time.Now()*
* p.Mul(a, a) *// element-wise
* fmt.Printf("%v\n", mat.Formatted(p, mat.Prefix(""), mat.Squeeze()))*
* p.Add(a, a) *
* fmt.Printf("%v\n", mat.Formatted(p, mat.Prefix(""), mat.Squeeze()))*
* p.MulElem(a, a)*
* fmt.Printf("%v\n", mat.Formatted(p, mat.Prefix(""), mat.Squeeze()))*
* fmt.Println(time.Since(start))*
*}*
Well... when I run the "go run mat.go" command the result time is about 150
microseconds, but when I run "go build" and then execute the binary the
result time is about 4 *milli*seconds. This happen when I use go1.16.
When I use go1.15.8, on the same code, the exe is faster (about 120
microseconds) then the "go run mat.go" (about 180 microseconds). One order
of magnitude faster than go1.16 exe (and basic Matlab).
So:
- am I in error with the code (sorry, it's all new for me)? If yes,
where is my fault?
- if the "benchmark" was correct, why go1.16 build executable is slower
than go1.15.8 exe and "go run" command?
- Is it my machine's fault or Gonum package or what?
- Do you also have these values?
My pc: HP ELITEBOOK 8560w Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz, 2201
Mhz, 4 Core(s), 8 Logical Processor(s) x64.
I am on the *Windows Subsystem Linux 2. *
*Sorry for my English, I hope you understand my issue, thank you for the
attention*
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