| Intel Core i7 920 vs. AMD Istanbul 2427 |
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| Sunday, 18 October 2009 14:10 | |||||||||||||||||||||||||||||||||||||||
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Last night I was wondering how the Core i7 architecture compares to the AMD Istanbul architecture when running molecular dynamics (MD) simulations with NAMD. I compiled a "multicore" version of NAMD 1.7b1 with ICC (11.1.056) for both systems --> Linux-x86_64-icc.multicore-linux64-icc.
(Seconds/step are taken from a single run after 500 steps)
Intel Core i7 920 beats AMD Istanbul 2427 on 5 cores and comes close on 6 cores while KDE is up and running Amarok (mp3 player), Browser and the usual
Hit "Rerad more..." to see the raw data RAW-Data after 500 steps of apoa1 benchmark:
Istanbul@2211 MHz ******************************************************************************* Info: Benchmark time: 1 CPUs 2.00233 s/step 23.1751 days/ns 275.461 MB memory TIMING: 500 CPU: 1013.86, 2.00095/step Wall: 1014.02, 2.00125/step, 0.0833855 hours remaining, 275.460876 MB of memory in use. Info: Benchmark time: 2 CPUs 1.02655 s/step 11.8814 days/ns 143.419 MB memory TIMING: 500 CPU: 1032.99, 2.05099/step Wall: 516.646, 1.02592/step, 0.0427466 hours remaining, 143.397095 MB of memory in use. Info: Benchmark time: 3 CPUs 0.700323 s/step 8.10559 days/ns 110.638 MB memory TIMING: 500 CPU: 1050.11, 2.10053/step Wall: 350.137, 0.700356/step, 0.0291815 hours remaining, 110.636948 MB of memory in use. Info: Benchmark time: 4 CPUs 0.521004 s/step 6.03014 days/ns 42.0779 MB memory TIMING: 500 CPU: 1047.48, 2.08368/step Wall: 261.93, 0.520997/step, 0.0217082 hours remaining, 42.077942 MB of memory in use. Info: Benchmark time: 5 CPUs 0.427389 s/step 4.94663 days/ns 46.4103 MB memory TIMING: 500 CPU: 1083.84, 2.13338/step Wall: 216.832, 0.426789/step, 0.0177829 hours remaining, 46.410278 MB of memory in use. Info: Benchmark time: 6 CPUs 0.35105 s/step 4.06307 days/ns 45.9346 MB memory TIMING: 500 CPU: 1059.45, 2.10233/step Wall: 176.839, 0.350852/step, 0.0146188 hours remaining, 45.934647 MB of memory in use. Info: Benchmark time: 7 CPUs 0.293715 s/step 3.39947 days/ns 50.1321 MB memory TIMING: 500 CPU: 1056.94, 2.05169/step Wall: 151.2, 0.293446/step, 0.0122269 hours remaining, 50.132065 MB of memory in use. Info: Benchmark time: 8 CPUs 0.259213 s/step 3.00016 days/ns 29.812 MB memory TIMING: 500 CPU: 1054.21, 2.07119/step Wall: 131.947, 0.259201/step, 0.0108 hours remaining, 29.811951 MB of memory in use. Core i7@2668 MHz ******************************************************************************* Info: Benchmark time: 1 CPUs 1.40421 s/step 16.2525 days/ns 275.388 MB memory TIMING: 500 CPU: 710.908, 1.38734/step Wall: 711.059, 1.38754/step, 0 hours remaining, 275.388153 MB of memory in use. Info: Benchmark time: 2 CPUs 0.736545 s/step 8.52483 days/ns 153.245 MB memory TIMING: 500 CPU: 744.4, 1.46383/step Wall: 372.377, 0.732234/step, 0 hours remaining, 153.245300 MB of memory in use. Info: Benchmark time: 3 CPUs 0.500922 s/step 5.7977 days/ns 70.6977 MB memory TIMING: 500 CPU: 755.643, 1.49267/step Wall: 251.964, 0.497758/step, 0 hours remaining, 70.697708 MB of memory in use. Info: Benchmark time: 4 CPUs 0.369021 s/step 4.27107 days/ns 66.6752 MB memory TIMING: 500 CPU: 748.103, 1.46778/step Wall: 187.637, 0.367132/step, 0 hours remaining, 66.675156 MB of memory in use. Info: Benchmark time: 5 CPUs 0.370917 s/step 4.29302 days/ns 69.7806 MB memory TIMING: 500 CPU: 1124.96, 1.84327/step Wall: 225.068, 0.36874/step, 0 hours remaining, 69.780609 MB of memory in use. Info: Benchmark time: 6 CPUs 0.358904 s/step 4.15398 days/ns 53.6726 MB memory TIMING: 500 CPU: 1228.03, 2.13982/step Wall: 204.816, 0.357021/step, 0 hours remaining, 53.672592 MB of memory in use. Info: Benchmark time: 7 CPUs 0.340182 s/step 3.9373 days/ns 47.1396 MB memory TIMING: 500 CPU: 1254.65, 2.36524/step Wall: 179.94, 0.339373/step, 0 hours remaining, 47.139603 MB of memory in use. Info: Benchmark time: 8 CPUs 0.305315 s/step 3.53374 days/ns 47.9976 MB memory TIMING: 500 CPU: 1239.33, 2.42248/step Wall: 155.679, 0.304045/step, 0 hours remaining, 47.997635 MB of memory in use. Istanbul ------------------------------------------------------------------------------- vendor_id : AuthenticAMD cpu family : 16 model : 8 model name : Six-Core AMD Opteron(tm) Processor 2427 stepping : 0 cpu MHz : 2211.336 cache size : 512 KB physical id : 1 siblings : 6 core id : 5 cpu cores : 6 apicid : 13 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc pni cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy altmovcr8 abm sse4a misalignsse 3dnowprefetch osvw bogomips : 4424.99 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate [8] Core i7 920 ------------------------------------------------------------------------------- vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology tsc_reliable nonstop_tsc pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 5345.24 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:
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