Path: csiph.com!usenet.pasdenom.info!gegeweb.org!eternal-september.org!feeder.eternal-september.org!mx05.eternal-september.org!.POSTED!not-for-mail From: aminer Newsgroups: comp.programming Subject: Re: Parallel archiver using my ParallelZlib is here... Date: Mon, 18 Feb 2013 17:47:06 -0800 Organization: A noiseless patient Spider Lines: 59 Message-ID: <5122D99A.1080006@toto.ca> References: <0d594a6d-6353-4aea-97f3-4f8ac908c778@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: mx05.eternal-september.org; posting-host="8427fd05edc201bb6b1d125b80ca38e6"; logging-data="32347"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX198eYRw9BNka3f/32M+89H8ctaX/h4V7IY=" User-Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:17.0) Gecko/20130107 Thunderbird/17.0.2 In-Reply-To: <0d594a6d-6353-4aea-97f3-4f8ac908c778@googlegroups.com> Cancel-Lock: sha1:mQHwacCCMJ92RRwwHaqgsNpjJPo= Xref: csiph.com comp.programming:3039 On 2/18/2013 8:56 AM, bob wrote: > On Friday, February 15, 2013 9:37:43 PM UTC-6, aminer wrote: >> Hello, >> >> >> >> I want to add an important thing... >> >> >> >> I have designed my parallel archiver 1.0 to be fault tolerant to power >> >> failures etc. >> >> >> >> You have to call the LoadIndex() method just after you create >> >> you object with the constructor and it will be fault tolerant. >> >> >> >> >> >> >> >> Thank you, >> >> Amine Moulay Ramdane. > > How much faster does it operate when you go from using 1 thread to using 2 threads? My parallel archiver is using Parallel Zlib so it's fast, so since Parrallel Zlib is fast , the P (parallel part) of the Amdahl equation is much smaller than with Parallel Bzip, so since it's using a lot the memory and the harddisk also, it gives 2.5x speed with 4 threads on 4 cores. And thats not so bad since we are speeding up the things 2.5x times, ParallelBzip is mush slower, so the P part is much bigger than with Parallel Zlib , and it gives over 3.4x speed with Parallel Bzip. Thank's, Amine Moulay Ramdane.