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Re: I correct please read again...

Cross-posted to 2 groups.

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Hello,


I have wrote:

 > I have taken an average number of cache-lines tranfers


I have taken an average of cache line transfers of the
following code inside RLock() of RWLockX for exemple:

--

repeat;
   event2.setEvent;
   asm pause end;
   event2.resetEvent;
until nbr^.nbr=0;

for i:=0 to GetSystemThreadCount-1 do
  begin
    while (FCount1^[i].fcount1<>0)
     do
      begin
       //if mysleep=0 then sleep(0);
       //else sleep(1);
      end;
  end;

--


but even if it is the worst case of the number of cache-lines 
transfers,LW_RWLockX and LW_RWLock will still scale better.



Thank you,
Amine Moulay Ramdane.



On 3/18/2014 3:02 PM, aminer wrote:
> I correct please read again...
>
> Hello,
>
>
> I have previously given you a benchmark that uses a small reader and
> writer sections, but if you make the reader and writer sections a little
> bit bigger the cache-lines transfers time will become less and less
> bigger in the Amdahl equation and it will make all my RWLock
> variants scale much better.
>
> For exemple i have made the read and write sections a little bit bigger
> and the execution time inside the read and write sections was equal
> and i have taken an average number of cache-lines tranfers and the
> instructions inside the reader section was scalable, and it has given
> the following calculation results:
>
>
> On a computer with 32 cores LW_RWLockX scales up to 29X
>
> On a computer with 32 cores LW_RWLock scales up to 29X
>
>
> And on a computer with 32 cores my RWLock and my RWLockX scales up to 9X.
>
>
> So this is much better.
>
> So i advise you to use LW_RWLockX and LW_RWLock that scales better.
>
>
>
> You can download all the variant of my scalable RWLock 3.05 from:
>
>
> http://pages.videotron.com/aminer/
>
>
>
> Thank you,
> Amine Moulay Ramdane.
>
>

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I correct please read again... aminer <aminer@toto.net> - 2014-03-18 15:02 -0700
  Re: I correct please read again... aminer <aminer@toto.net> - 2014-03-18 15:08 -0700
  Re: I correct please read again... aminer <aminer@toto.net> - 2014-03-18 15:16 -0700

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