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info about zappa on 512 cores ?
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Daniel Shawul



Joined: 14 Mar 2006
Posts: 2268
Location: Ethiopia
PostPost subject: Re: numa scaling    Posted: Tue Jun 26, 2012 12:55 am Reply to topic Reply with quote
Here is result on a non-NUMA intel xeon processors for comaprison ( 4 sockets X Quad core Intel xeon). Here scorpio seem to scale slightly better but both have problems scaling on 8 processors. I think the previous opteron test showed a better scaling at 8 cores. I suspect it is because of contention on the shared FSB.
Code:

   scorpio      crafty   
1   1173   1.00   1.8   1.00
2   2323   1.98   3.5   1.94
4   4386   3.74   6.7   3.72
8   7042   6.00   10.5   5.83

And just in case there are doubts the machine being UMA here is the latency test.
Code:

Memory allocated on cpu 0
0: time = 8.69122 seconds
1: time = 8.50812 seconds
2: time = 8.47348 seconds
3: time = 8.4931 seconds
4: time = 8.66125 seconds
5: time = 8.50479 seconds
6: time = 8.47527 seconds
7: time = 8.48791 seconds
8: time = 8.84295 seconds
9: time = 8.48066 seconds
10: time = 8.47517 seconds
11: time = 8.48868 seconds
12: time = 8.7562 seconds
13: time = 8.47956 seconds
14: time = 8.47186 seconds
15: time = 8.48825 seconds

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Display posts from previous:   
Subject Author Date/Time
info about zappa on 512 cores ? Daniel Shawul Sat Jun 23, 2012 2:05 pm
      numa scaling Daniel Shawul Sun Jun 24, 2012 10:20 am
            Re: numa scaling Robert Hyatt Sun Jun 24, 2012 5:01 pm
                  Re: numa scaling Daniel Shawul Sun Jun 24, 2012 5:41 pm
                        Re: numa scaling Robert Hyatt Mon Jun 25, 2012 12:37 am
                              Re: numa scaling Daniel Shawul Mon Jun 25, 2012 1:23 am
                                    Re: numa scaling Robert Hyatt Mon Jun 25, 2012 10:05 am
                                          Re: numa scaling Daniel Shawul Mon Jun 25, 2012 4:00 pm
                                                Re: numa scaling Daniel Shawul Mon Jun 25, 2012 5:21 pm
                                                Re: numa scaling Daniel Shawul Mon Jun 25, 2012 8:09 pm
                                                      Re: numa scaling Robert Hyatt Mon Jun 25, 2012 8:38 pm
                                                            Re: numa scaling Daniel Shawul Mon Jun 25, 2012 8:53 pm
                                                                  Re: numa scaling Robert Hyatt Mon Jun 25, 2012 9:17 pm
                                                                        Re: numa scaling Daniel Shawul Mon Jun 25, 2012 9:46 pm
                                                                              Re: numa scaling Robert Hyatt Tue Jun 26, 2012 3:34 am
                                                                                    Re: numa scaling Daniel Shawul Tue Jun 26, 2012 11:06 am
                                                      Re: numa scaling Daniel Shawul Tue Jun 26, 2012 12:55 am
            transposition tables Daniel Shawul Sun Jun 24, 2012 5:53 pm
                  Re: transposition tables Daniel Shawul Wed Jun 27, 2012 11:17 pm
                        Re: transposition tables Ronald de Man Fri Jun 29, 2012 11:47 pm
                              Re: transposition tables Daniel Shawul Sat Jun 30, 2012 12:40 am
      Re: info about zappa on 512 cores ? Vincent Diepeveen Fri Jun 29, 2012 11:07 pm
            Re: info about zappa on 512 cores ? Daniel Shawul Sat Jun 30, 2012 12:32 am
                  Re: info about zappa on 512 cores ? Daniel Shawul Sat Jun 30, 2012 10:50 am
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