hello,��

Test seems old, both virtual machines (VW and Pharo) have upgraded in the meantime.��

VW has always been faster that Pharo for what I know, up to recent time. Recently Pharo changed the vm technology so now it should be much faster, but I don'r know is faster that VW , so it would be nice to have a up to date comparison.

Related to Matrix, this is a nice way to have many smalltalk images running in parallel, but it doesn't seems the case of this test. It requires a specific way of writing the code, it is not as automatic as ��defining a piece of code "parallel". The thread model of VW and Pharo are still the same, green thread and (almost) single core systems��

ciao

giorgio

On Sat, Aug 31, 2019 at 2:37 PM Sven Van Caekenberghe <sven@stfx.eu> wrote:

> On 31 Aug 2019, at 13:27, Richard Kenneth Eng <horrido.hobbies@gmail.com> wrote:
>
> https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/vw-pharo.html
>
> Is VisualWorks really faster than Pharo? Why???

The Pharo code is single threaded, single core, while the VW code uses something called MatriX.VirtualMachines to create workers that run on multiple cores.

Presumably that makes a huge difference.

Also, such parallelism is easy for benchmarks that can be split in independent tasks, real world code is a completely different story.

Basically, this is not the same code that is being compared.