Mailing Lists: Apple Mailing Lists

Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Developing most optimal DotProduct function




On Nov 7, 2005, at 9:41 AM, Rustam Muginov wrote:

Well, I rechecked the code several times (and took a walk several times too :))

Originaly, i was using vecLib's "dotpr" function as a reference point, and had a bit-to-bit match with dotpr's results.
Now, as i de-serialized the Sum, i am getting different results
Here is a test output showing the mismatches then relative error is larger then 1%

You should probably use a double precision dot product as your reference for correctness.


Ian
_______________________________________________
Do not post admin requests to the list. They will be ignored.
PerfOptimization-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/perfoptimization-dev/email@hidden

This email sent to email@hidden
References: 
 >Developing most optimal DotProduct function (From: Rustam Muginov <email@hidden>)
 >Re: Developing most optimal DotProduct function (From: Holger Bettag <email@hidden>)
 >Re: Developing most optimal DotProduct function (From: Rustam Muginov <email@hidden>)
 >Re: Developing most optimal DotProduct function (From: Holger Bettag <email@hidden>)
 >Re: Developing most optimal DotProduct function (From: Rustam Muginov <email@hidden>)



Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.