On 08/29/2013 10:31 PM, Prentice Bisbal wrote:
Albert,
It looks like you are trying to compile for an IBM Power 7 system.
What is the 'other machine' you are comparing it to, and did you use
the same number of cores in each case?
Prentice
yes it is. here is the configurations:
* 4 IBM POWER7 processors; detailed configuration:
o architecture ppc64 (specification Power ISA v.2.06)
o 64 bit
o 8 cores
o core clock rate 3.83 Ghz
o up to 4 SMT threads per core
o 64 kB (32 kB instructions + 32 kB data) cache L1 per core
o 256 kB cache L2 per core
o 4 MB cache L3 per core
* SMP
* 32 cores
* 128 GB RAM
* theor. peak perf. 980 GFlops/s
* dedicated operating system AIX 7.1
I compared with the following one, obviously the following one hardware
is poor than above one but efficiency is much better. There must be
something wrong with the compiling....
AMD Quad-Core Opteron 835X nodes
x86_64 architecure 432 nodes
16 cores each
16/32 GB per node for memobry
THX
Albert
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