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2 hour ARM build

2 hour ARM build

Posted Mar 23, 2012 5:07 UTC (Fri) by jcm (subscriber, #18262)
In reply to: 2 hour ARM build by mgedmin
Parent article: Fedora mulls ARM as a primary architecture

Do bear in mind in these numbers that we're currently building on PandaBoards, TrimSlices, and the like. They have nothing like the many MB of L2 cache you're going to see in real 32-bit ARM servers in the coming months, which will also have much improved on-chip IO. I actually think the 2-2.5x speedup estimates we've been given will end up being low because for IO bound operation we're going to have up to 4x the cache, 4x the RAM, and a lot of other microarchitectural improvements.


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2 hour ARM build

Posted Mar 23, 2012 10:59 UTC (Fri) by etienne (guest, #25256) [Link]

> real 32-bit ARM servers ... 4x the cache, 4x the RAM

With the ARM instruction set, unless using Thumb, you have each instruction coded on 32 bits, so 256 assembly instructions weight 1 Kbyte.
You will need a lot more code cache than a ia32 processor to compete, probably around twice the amount.

2 hour ARM build

Posted Mar 24, 2012 5:19 UTC (Sat) by BenHutchings (subscriber, #37955) [Link]

This is not generally true. Just compare the installed sizes across architectures for e.g. http://packages.debian.org/wheezy/libc6 or http://packages.debian.org/wheezy/coreutils

2 hour ARM build

Posted Mar 25, 2012 0:25 UTC (Sun) by jzbiciak (subscriber, #5246) [Link]

I wonder what the compile time might look like on this beast when it comes out.

(Full disclosure: I work on the team making that chip, so mine is more than just a passing interest.)

2 hour ARM build

Posted Mar 28, 2012 12:29 UTC (Wed) by stevem (subscriber, #1512) [Link]

Give a few samples to us Debian folks for use in build machines, and we'll let you know! :-)

Seriously, we're always looking for donations of newer/faster hardware for building and testing with.


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