Gentoo Archives: gentoo-user

From: Iain Buchanan <iaindb@××××××××××××.au>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] dual quad core xeons
Date: Mon, 26 May 2008 23:45:55
Message-Id: 1211845490.3375.6.camel@localhost
In Reply to: [gentoo-user] dual quad core xeons by James Erickson
1 On Mon, 2008-05-26 at 15:21 -0500, James Erickson wrote:
2 > i am wondering if gentoo can utilize the 64 bit feature of dual quad
3 > core xeons (E5405 harpertown).
4
5 The 64bit features, yes. If there are other "features" (eg. specific
6 instructions) then maybe, maybe not! I'm not the expert here.
7
8 > i am also wondering if it is possible
9 > to run all eight cores simutaneously on folding@home with gentoo.
10
11 Why not? If your kernel is configured properly:
12 $ dmesg | grep -i cpu
13 Processor #0 (Bootup-CPU)
14 SMP: Allowing 8 CPUs, 0 hotplug CPUs
15 PERCPU: Allocating 29344 bytes of per cpu data
16 Initializing CPU#0
17 CPU: L1 I cache: 32K, L1 D cache: 32K
18 CPU: L2 cache: 6144K
19 CPU: Physical Processor ID: 0
20 CPU: Processor Core ID: 0
21 Initializing CPU#1
22 CPU: L1 I cache: 32K, L1 D cache: 32K
23 CPU: L2 cache: 6144K
24 CPU: Physical Processor ID: 1
25 CPU: Processor Core ID: 0
26 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
27 Initializing CPU#2
28 CPU: L1 I cache: 32K, L1 D cache: 32K
29 CPU: L2 cache: 6144K
30 CPU: Physical Processor ID: 0
31 CPU: Processor Core ID: 1
32 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
33 Initializing CPU#3
34 CPU: L1 I cache: 32K, L1 D cache: 32K
35 CPU: L2 cache: 6144K
36 CPU: Physical Processor ID: 1
37 CPU: Processor Core ID: 1
38 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
39 Initializing CPU#4
40 CPU: L1 I cache: 32K, L1 D cache: 32K
41 CPU: L2 cache: 6144K
42 CPU: Physical Processor ID: 0
43 CPU: Processor Core ID: 2
44 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
45 Initializing CPU#5
46 CPU: L1 I cache: 32K, L1 D cache: 32K
47 CPU: L2 cache: 6144K
48 CPU: Physical Processor ID: 1
49 CPU: Processor Core ID: 2
50 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
51 Initializing CPU#6
52 CPU: L1 I cache: 32K, L1 D cache: 32K
53 CPU: L2 cache: 6144K
54 CPU: Physical Processor ID: 0
55 CPU: Processor Core ID: 3
56 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
57 Initializing CPU#7
58 CPU: L1 I cache: 32K, L1 D cache: 32K
59 CPU: L2 cache: 6144K
60 CPU: Physical Processor ID: 1
61 CPU: Processor Core ID: 3
62 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz stepping 06
63 Brought up 8 CPUs
64
65 http://setiathome.berkeley.edu/show_user.php?userid=69551
66
67
68 > i
69 > apologize if i am asking stupid questions. hope i am not out in left
70 > field with this post. thank you in advance for your consideration in
71 > this matter.
72
73 So long as you're running Gentoo on it, then I'll allow the question ;)
74 --
75 Iain Buchanan <iaindb at netspace dot net dot au>
76
77 A black cat crossing your path signifies that the animal is going somewhere.
78 -- Groucho Marx
79
80 --
81 gentoo-user@l.g.o mailing list