[maxmsp] sfplay problems with iMac....

Hi,

only to inform you, that I made this morning a new test with iMac  
24', 2,16GHz, Intel Core Duo, 1,5Go, 667MHz bus

OSX  10.4.8, Max 4.6.3

with the exactly same environement:

playback system of 36 channels (16mono, 8stereo and 1quadro)
all files are playing in differents speeds and diredction and regions
same buffers 20160, 40320, 180000

and... no interruption of soundfiles - alla is working without the  
problem!

it's exactly the same parameters like iMac20'
the only difference is 0,5GRAM more then with iMac20'...

I tried the iMac 20' in the same time and in Activity Monitor is  
show: about 850Mb to 1Gb of RAM  is used with max and patch =>  
nothing remain from 1Gb RAM and 500Mb is remain on 1,5Gb  RAM....

the solution of the problem to play many sfplay is very simple -

put more memory to the computer............. that's all!

;-)




Le 25 févr. 08 à 16:36, Mihalic Alexander a écrit :

> I have an external HD but the same problems - interuptions in sf
>
> I changed the buffer size with iMac (with external HD):
> 	20160 - lot of interuption
> 	40320 - better (but srpot from time to time)
> 	180000 - all stops and crash...
>
> and MacBook (black) with external HD:
> 	same things - but with 40320 is much more better lecture....
>
> I think there is no solution.... :(
>
> thanks to all!
>
>
>
> Le 20 févr. 08 à 18:45, Todor Todoroff a écrit :
>
>> I second Emmanuel. I've got an installation running in Angers for  
>> the last 2
>> months with 2 sfplay with 6 channels and 2 with 7 channels (total 26
>> channels) and I initially got problems of sound files stopping on  
>> an iMac
>> (while it was running perfectly on an Intel MacBook Pro and on a  
>> quadcore
>> MacPro). I ended up using 180000, and I never had any problem  
>> anymore.
>>
>> By the way, if someone runs into problems with FireWire sound  
>> interfaces on
>> the iMac (I had troubles with a RME Fireface400), it is linked to  
>> the new
>> FireWire chip Apple is using in their latest models and the only  
>> way known
>> by Apple to solve the problem is to use a FireWire hub. I used an  
>> old LaCie
>> Hardrive as a hub.
>>
>> Best,
>> Todor
>> _________________________________________
>> Web: http://www.compositeurs.be/Todoroff.html
>>
>>
>>
>>
>>> On 20 févr. 08, at 15:59, Mihalic Alexander wrote:
>>>
>>>> is somewhere an another explanation of disk buffer size for sfplay?
>>>> or somebody can explain me?
>>>
>>> I never cared about the buffer size explanation, because it always
>>> worked to me when using bigger number. The buffer size I usually use
>>> when a sound stops because my HD is too slow, is 1000000... And I
>>> never had a sound interruption after that. Memory is cheap nowadays.
>>>

Alexander Mihalic
-----------------------------------------------------------
Computer Music Department Manager

IMEB
Pl. André Malraux, 18000 Bourges, France

mihalic.imeb at orange.fr
http://www.imeb.org

tel: (33)-2.48.20.41.87.
fax: (33)-2.48.20.45.51.