Building more files than CPUs
Building more files than CPUs
- Subject: Building more files than CPUs
- From: Steve Mills <email@hidden>
- Date: Thu, 9 Feb 2006 10:34:29 -0600
When I build with Xcode on my main G5, I have 6 PPC CPUs available
around the house. Xcode will use those, and it will build *8* files
at a time. When I build on the Intel iMac, it will usually build 2
files at a time (no other Intel Macs around). However, the other day
it was building *6* files at a time.
Why can it compile more files than I have CPUs? Does it allow fast
machines (dual 2.somethingGHz G5) to do 2 files per CPU? Or is it
actually feeding the 2nd file while the 1st file is finishing up on a
fast CPU? Better yet, how can I get the iMac to do 6 at a time *all*
the time instead of 2. When it did 6 files at a time, it actually
beat the 8-files-at-a-time PPC farm by 5 minutes (18 vs. 23),
although that G5 was connected via AirPort Extreme, so it was
spending a lot more time xferring data.
Steve Mills
Drummer, Mac geek
http://sjmills5.home.mchsi.com/
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