cache model of ppc

3 messages, 3 authors, 2008-08-20 · open the first message on its own page

cache model of ppc

From: Felix Schmidt <hidden>
Date: 2008-08-20 15:57:09

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
 
Dear,

I some questions about the PowerPC cache model.

How many caches are there?
How many caches are in multi-core systems? do you have a L1 cache per
cpu and one shared L2? or is there a victim L3 cache?

can you tell me something about the path through the cache?
for example I look up for data in L1, but this was a miss. Then i look
up in L2 this was also a miss. but the date will be in another L1
cache of another cpu. Is there a 1.5 or 2.5 hit?

can you help me please?
this is for my bachelorthesis

thanks a lot

felix
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
 
iEYEARECAAYFAkisOIwACgkQmH8OAwYoDBk0ugCgu6zzJEQWA9NldC4ekjOcWgIu
cYIAoMquvbvAf/qA1WmjtROpq+R1X6Yb
=JepB
-----END PGP SIGNATURE-----

Re: cache model of ppc

From: Josh Boyer <hidden>
Date: 2008-08-20 17:37:12

On Wed, 2008-08-20 at 17:30 +0200, Felix Schmidt wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
 
Dear,

I some questions about the PowerPC cache model.
It depends greatly on the core, chip, and cache used.  That varies
widely across the PPC universe.

josh

Re: cache model of ppc

From: Scott Wood <hidden>
Date: 2008-08-20 18:23:23

On Wed, Aug 20, 2008 at 05:30:21PM +0200, Felix Schmidt wrote:
I some questions about the PowerPC cache model.

How many caches are there?
How many caches are in multi-core systems? do you have a L1 cache per
cpu and one shared L2? or is there a victim L3 cache?

can you tell me something about the path through the cache?
for example I look up for data in L1, but this was a miss. Then i look
up in L2 this was also a miss. but the date will be in another L1
cache of another cpu. Is there a 1.5 or 2.5 hit?
This is all dependent on the particular CPU you're talking about, and
should be described in its manual.

-Scott
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help