Just a memory and haven't tested in a while, but last I remember using 64 and 32 for a project of mine that used convolution for reverb and a great number of streams of notes (using my orchestral composition library), at the time on my old laptop, I remember that rendering the sketch would take some 3.5 minutes with 32 and 5.5 minutes with 64. The laptop was a PIII, 1.2ghz, with 768 megs ram, and this was on Linux. I remember the time difference to be enough that my usual way of working was to use 32 for most work and an occassional 64 bit render. I haven't tested the difference since then, but I regularly top out my CPU when rendering to dac using 32. I rather much like to use both, 64 when rendering to disk and 32 when rendering live. I definitely find the 64 tends to have a nicer sound to it but it's enough for me to know what differences the sound should be and use 32 for general usage as it simply saves me time when working and tightens the composition loop. I'm also not going out to purchase a blazingly fast laptop or computer when what I have will certainly more than do the job by using the two different versions together. I will try a test tonight of my current piece I am working on. The piece does not use convolution, and when rendering to disk I use 44100, 16bit, ksmps=1. I will record the time taken to render the piece for both 64 and 32. The piece is only a sketch but is ten minutes in duration with a fair amount going on, so should be a decent test I think. steven On 11/8/05, Michael Gogins wrote: > It may, or may not, be an accurate indicator. > > But the test I propose IS an accurate indicator, since it DIRECTLY tests what is of interest, namely the ability to perform without glitches. > > -----Original Message----- > From: Iain Duncan > Sent: Nov 8, 2005 1:36 PM > To: csound-devel@lists.sourceforge.net > Subject: Re: [Cs-dev] 64 bit load test, was CVS Reorganization Request > > Mike, I do not understand why you don't think for real time, cpu use is > not an accurate indicator. For my purposes using an actual complicated > and large gigging setup, I think it is the most important indicator. > > For club gigs I have: > > - my worst case latency I can live with for real time, -b128 -B512 > - my total channels, always 6-8 ( kick, bass, and more stereo pairs ) > - my worst ksmps I can live with, 64 > - my worst case sr I can with, 441000 > > After that, the actual code and musical limitations are written around > the limitations of my cpu. So if I can get 69% instead of 82% when I am > only using 5 synths, 8 drum channels, and 2 reverbs, it means I can add > more gear, which I would like. On the other hand, 82% is about where I > top it out. > > However, I will do other tests too. > > Iain > > > > Michael Gogins wrote: > > Yes, I hadn't thought about that. Channels of output then? > > > > Regards, > > Mike > > > > -----Original Message----- > > From: jpff@cs.bath.ac.uk > > Sent: Nov 8, 2005 10:49 AM > > To: csound-devel@lists.sourceforge.net > > Cc: csound-devel@lists.sourceforge.net, 5377815.1131462261512.JavaMail.root@mswamui-backed.atl.sa.earthlink.net > > Subject: Re: [Cs-dev] 64 bit load test, was CVS Reorganization Request > > > > Of course many sound cards will not work at arbitrary sample rates so > > this test could be harder than you imply. > > ==John ffitch > > > > > > ------------------------------------------------------- > > SF.Net email is sponsored by: > > Tame your development challenges with Apache's Geronimo App Server. Download > > it for free - -and be entered to win a 42" plasma tv or your very own > > Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php > > _______________________________________________ > > Csound-devel mailing list > > Csound-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/csound-devel > > > > > > > > > > > > ------------------------------------------------------- > > SF.Net email is sponsored by: > > Tame your development challenges with Apache's Geronimo App Server. Download > > it for free - -and be entered to win a 42" plasma tv or your very own > > Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php > > _______________________________________________ > > Csound-devel mailing list > > Csound-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/csound-devel > > > > > ------------------------------------------------------- > SF.Net email is sponsored by: > Tame your development challenges with Apache's Geronimo App Server. Download > it for free - -and be entered to win a 42" plasma tv or your very own > Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel > > > > > > ------------------------------------------------------- > SF.Net email is sponsored by: > Tame your development challenges with Apache's Geronimo App Server. Download > it for free - -and be entered to win a 42" plasma tv or your very own > Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel > ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. 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