Sequential peakflops

#1

Hi Julians,

When I use

peakflops(8000;parallel=false)

I obtain

1.266034664857239e11

which corresponds to (IMHO) the multicore peak perf of my PC.
In addition I see top reaching 800%.
The parallel flag seems to be ignored.
Is it expected ?
Best
Laurent

#2

You can see what parallel does here: https://github.com/JuliaLang/julia/blob/5486cc223c2b92b45d7d5e8e9cdbca9ffa49ab07/stdlib/LinearAlgebra/src/LinearAlgebra.jl#L400-L414.

The matrix multiplication uses BLAS and will be multithreaded. parallel determines if multiple julia workers should be started.

1 Like
#3

Thanx