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Old 2014-04-14, 13:33   #1
PageFault
 
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Default New hardware - help required

I got a box for work and have no idea about the hardware / client configuration. It is a i3 3320 and it seems to have 2 actual cores. The client reported this:

[Main thread Apr 14 14:30] Optimizing for CPU architecture: Core i3/i5/i7, L2 cache size: 256 KB, L3 cache size: 3 MB
[Main thread Apr 14 14:30] Logical CPUs 1,3 form one physical CPU.
[Main thread Apr 14 14:30] Logical CPUs 2,4 form one physical CPU.


So, I applied those worker affinities and it didn't go. I chose smart assignment for worker 2 and it now seems to be using it all but now slower - at first I only got one assignment (due to bad internet), then it got more but the first LL tests is now slower - was .044 oer iteration and is now .075 with a second assignment.

Have now tried smart assignment for both - still bizarre behavior.

What is going on?
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Old 2014-04-14, 14:33   #2
firejuggler
 
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it might be because CPU are numbered from 0.
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Old 2014-04-14, 15:23   #3
kracker
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Quote:
Originally Posted by PageFault View Post
I got a box for work and have no idea about the hardware / client configuration. It is a i3 3320 and it seems to have 2 actual cores. The client reported this:

[Main thread Apr 14 14:30] Optimizing for CPU architecture: Core i3/i5/i7, L2 cache size: 256 KB, L3 cache size: 3 MB
[Main thread Apr 14 14:30] Logical CPUs 1,3 form one physical CPU.
[Main thread Apr 14 14:30] Logical CPUs 2,4 form one physical CPU.


So, I applied those worker affinities and it didn't go. I chose smart assignment for worker 2 and it now seems to be using it all but now slower - at first I only got one assignment (due to bad internet), then it got more but the first LL tests is now slower - was .044 oer iteration and is now .075 with a second assignment.

Have now tried smart assignment for both - still bizarre behavior.

What is going on?
It might be best (if possible) to turn off HT. On my i3 3220, I run two workers, specifically on cpu 1 and cpu 3.
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