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AMD FX Flags
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dky
n00b
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Joined: 01 May 2009
Posts: 60
PostPosted: Wed Mar 28, 2012 7:01 pm    Post subject: AMD FX Flags Reply with quote
Ciao ragazzi,
vorrei un vostro consiglio.
Le flag indicate qui:
http://en.gentoo-wiki.com/wiki/Safe_Cflags/AMD#FX-8xxx.2F6xxx.2F4xxx_.28Bulldozer.29

Vanno bene per il processore AMD FX 6-Core Buldozzer?
O mi consigliate qualcosa di più adatto?
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k01
Arch/Herd Tester
Arch/Herd Tester


Joined: 13 Feb 2008
Posts: 608
Location: Milano
PostPosted: Wed Mar 28, 2012 7:26 pm    Post subject: Reply with quote
vanno bene ma leggi la nota, gcc stabile in portage attualmente è la versione 4.5.3, la 4.6.2 è ancora hard masked
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ago
Developer
Developer


Joined: 01 Mar 2008
Posts: 1403
Location: Cosenza, Italy
PostPosted: Wed Mar 28, 2012 9:23 pm    Post subject: Re: AMD FX Flags Reply with quote
dky wrote:
Vanno bene per il processore AMD FX 6-Core Buldozzer?
O mi consigliate qualcosa di più adatto?


Code:
-march=native -O2
e vai sempre bene ( su i686 e x86_64 )
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dky
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Joined: 01 May 2009
Posts: 60
PostPosted: Fri Mar 30, 2012 7:57 pm    Post subject: Reply with quote
E MAKEOPTS che valore gli dò?
Sull'handbook dice:
Code:

 Una buona scelta è il numero di CPU (o i core della/e CPU) nel sistema più uno, ma non è detto che sia sempre l'impostazione migliore.

Ma mi sembra esagerato impostare:
Code:

MAKEOPTS="-j7"
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ago
Developer
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Joined: 01 Mar 2008
Posts: 1403
Location: Cosenza, Italy
PostPosted: Fri Mar 30, 2012 9:14 pm    Post subject: Reply with quote
fai una prova

Code:
for i in {1..10};do MAKEOPTS="-j"${i}"" time emerge -q gcc;done


Cosi ti renderai conto da solo
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dky
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Joined: 01 May 2009
Posts: 60
PostPosted: Fri Mar 30, 2012 9:24 pm    Post subject: Reply with quote
Code:
time: command not found
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