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More about the scalability...

Ramine

10/23/2015 3:33:00 AM


Hello,


I was simulating the scalability of my new Scalable Distributed
Reader-Writer Mutex version 1.34 on an x86 Quadcore, and i have noticed
that it can scale up to 40X on 40 cores with a reader section of ~10 CPU
cycles and with 0.1% to 0.2% of writers, so i think that in average it
can scale up to 40X on 40 cores with 0.1% to 02% of writers, so if you
want to scale much more that that you have to use my scalable SeqlockX.

If you ask me why it can not scale more than 40X..

The answer is on the writer side of my scalable distributed
reader-writer mutex, the serial part of the Amdahl's law of the writer side
of my scalable distributed reader-writer mutex will get much bigger when
you add more and more threads on more and more cores because you have to
transfer cache-lines on the writer side of each RWLock of the Scalable
distributed Reader-Writer Mutex...so you can not avoid this weakness
that limit the scalability to an average of 40X.


You can download the new updated version 1.34 from:

https://sites.google.com/site/aminer68/scalable-distributed-reader-wr...


Thank you for your time.


Amine Moulay Ramdane.
5 Answers

Richard Heathfield

10/23/2015 7:52:00 AM

0

On 23/10/15 04:33, Ramine wrote:
>
> Hello,

Hi. Have you fixed that error check yet?

--
Richard Heathfield
Email: rjh at cpax dot org dot uk
"Usenet is a strange place" - dmr 29 July 1999
Sig line 4 vacant - apply within

Kaz Kylheku

10/23/2015 3:26:00 PM

0

On 2015-10-23, Richard Heathfield <rjh@cpax.org.uk> wrote:
> On 23/10/15 04:33, Ramine wrote:
>>
>> Hello,
>
> Hi. Have you fixed that error check yet?

I cannot see Ramine postings at the aioe.org server. I see your followup,
but the parent article is unavailable, even though it is new.

Sometimes the counters for comp.programing or comp.programming.threads
indicate new articles, but when I fetch headers, they don't exist.

This is an indication of Ramine activity.

Richard Heathfield

10/23/2015 3:57:00 PM

0

On 23/10/15 16:25, Kaz Kylheku wrote:
> On 2015-10-23, Richard Heathfield <rjh@cpax.org.uk> wrote:
>> On 23/10/15 04:33, Ramine wrote:
>>>
>>> Hello,
>>
>> Hi. Have you fixed that error check yet?
>
> I cannot see Ramine postings at the aioe.org server.

Clearly the aioe.org people have taste.

--
Richard Heathfield
Email: rjh at cpax dot org dot uk
"Usenet is a strange place" - dmr 29 July 1999
Sig line 4 vacant - apply within

Melzzzzz

10/23/2015 5:21:00 PM

0

On Fri, 23 Oct 2015 15:25:40 +0000 (UTC)
Kaz Kylheku <kaz@kylheku.com> wrote:

> On 2015-10-23, Richard Heathfield <rjh@cpax.org.uk> wrote:
> > On 23/10/15 04:33, Ramine wrote:
> >>
> >> Hello,
> >
> > Hi. Have you fixed that error check yet?
>
> I cannot see Ramine postings at the aioe.org server. I see your
> followup, but the parent article is unavailable, even though it is
> new.
>
> Sometimes the counters for comp.programing or comp.programming.threads
> indicate new articles, but when I fetch headers, they don't exist.
>
> This is an indication of Ramine activity.

albasani also filters all Ramine posts except in comp.arch

Chad

10/23/2015 10:46:00 PM

0

Well at least radtard can form a coherent English sentence. That's more than what I can say for a certain self taught low level programmer from Poland.