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Core ID mapping

Question asked by Aristides Ioannou on Feb 13, 2015
Latest reply on Feb 16, 2015 by Scott Wood

Hello everyone,

 

I want to run some experiments on a T4240RDB platform and I need to know the exact mapping between core ids (as shown in top or /proc/cpuinfo) and the actual hardware contexts. Usually on other platforms the /proc/cpuinfo provides enough information to figure that out but in case of the T4240RDB platform that I am using, the information provided is insufficient.

 

[aris@RDB4-F20 ~]$ cat /proc/cpuinfo

processor       : 0

cpu             : e6500, altivec supported

clock           : 1666.666650MHz

revision        : 2.0 (pvr 8040 0120)

 

processor       : 1

cpu             : e6500, altivec supported

clock           : 1666.666650MHz

revision        : 2.0 (pvr 8040 0120)

 

.....

 

I need to know which 4 cores (8 hardware contexts) belong to each processor cluster and for every core, its two hardware contexts.

 

Thanks in advance!

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