In a message dated 6/22/03 8:41:05 PM, [EMAIL PROTECTED] writes: << Can only very few programs take advantage of the two processors? >>
Primarily Photoshop. The MacOS knows that there are two processors installed, but it cannot itself use these to simultaneously schedule operations. The MacOS was designed for neither multi-tasking (can be done with one or more processors) nor multi-processing (requires two or more processors). (2, 4, 6, and more-way PPC cards were made my IBM and a few others, but these cards were utilized in proprietary systems, using a proprietary operating system). (My former employer made a great many multiprocessors, including 16-way IBM System/390-compatible mainframes. The processing power of such a machine, especially coupled with an operating system which can take advantage of symmetric multiprocessing, such as our version of Unix, is truly awesome. In fact, Sun Microsystems ripped off our multiprocessor support code and incorporated it into their version of Unix). >> Can one control what one gives to each processor. >> The MacOS can't, but the application (Photoshop) can. >> If one were to upgrade can one just upgrade one of the processors or is this idea founded on a mistake? Do the dual processors have separate slots? Can they both be upgraded? 2 x XLR-8 say? >> A 9600/180MP and a 9600/200MP both share the same Tsunami-type motherboard. There is only one processor slot. NewerTech made a so-called 400 MHz MP card (really, two 200 MHz 604e processors on one card) and a so-called 450 MHz MP card (really, two 225 MHz 604e processors on one card). These work fine in just about any PCI Mac which accepts a standard (i.e., non-Kansas) CPU card. I have a 9600/200MP. It works much better when a G3 card replaces its MP card. -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
