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I have a bullet-proof scientific app I developed using cocoa. I just purchased a new MacPro with the dual quad processors. Earlier posts attempting to determine MAXIMUM theoretical speedup have gotten bogged down with semantic differencea between a corea and a CPUa. Having done EXTENSIVE multi-processing on UNIX machines using MPI, I was hoping I could achieve a speedup on my application exceeding 2 times and hopefully approachig numcores - 1 times (7 in this case). There IS a know bug with the NSInvocationQueue method on intels using 10.5.6 which I have read will be fixed on 10.6. my question are: (1) Is the ANYONE out there who has actually done scientific computing on the quad-core intel machines? (2) Have you achieved a speedup beyond number of CPU's (2)? (3) Has anyone used OpenMP with optional (LLVM or gcc 4.2) compilers? (4) If so where do I install the xomp foler I downloadd which is compatible with my machine and OS. (5) Please don't waste your time explaining the semantic differences between cores and cpu's, I don't care what you call them, all I need to know is MAXIMUM speedup. Anyone who can point me in the right direction for running concurrent methods NOT using NSOperationQueue with NSInvocationOperations would make me VERY VERY happy. Thanks again everyone. Sincerely, Ron Jurjincie email@hidden _______________________________________________ Cocoa-dev mailing list (email@hidden) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
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