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Old 2021-02-12, 13:41   #1
drkirkby
 
"David Kirkby"
Jan 2021
Althorne, Essex, UK

26·3 Posts
Default Benchmark run - Can I optimise how mprime is run?

I have a Dell 7920 which has a poor memory configuration - 2 x 32 GB DIMMs when they should be installed in sets of 4. That problem will be addressed as soon as I can get some DIMMs. The CPU is an Intel Xeon Platinum 8167M, 26-core, 52-thread, running at 2.0 GHz.




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I run the mprime benchmark on CentOS 7.9, the results of which I have attached. This uses all 26-cores of the CPU, but I think I will limit mprime to 24 of the 26. Is there any way I can configure mprime to work best with this CPU. Currently I believe I am doing "PRP" with the exponent 109,832,003

https://www.mersenne.org/report_expo...9832003&full=1

Can I stop mprime cleanly? If so how? Based on the benchmark, and the workload, can I optimise things, to get the work done faster?
Attached Files
File Type: txt results.bench.txt (52.6 KB, 22 views)

Last fiddled with by drkirkby on 2021-02-12 at 13:46
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Old 2021-02-12, 14:02   #2
drkirkby
 
"David Kirkby"
Jan 2021
Althorne, Essex, UK

3008 Posts
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Some information about the CPU. This shows the frequency as 1 GHz. It should be 2 GHz. mprime reports



Intel(R) Xeon(R) Platinum 8167M CPU @ 2.00GHz
CPU speed: 2223.12 MHz, 26 hyperthreaded cores



It might run at 2223.12 MHz with a light load, but should not at full load. It is hard to get much information on this CPU - probably why it was relatively cheap at £300 (around $414 USD) used.



[drkirkby@duck ~]$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 52
On-line CPU(s) list: 0-51
Thread(s) per core: 2
Core(s) per socket: 26
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 85
Model name: Intel(R) Xeon(R) Platinum 8167M CPU @ 2.00GHz
Stepping: 4
CPU MHz: 1000.000
CPU max MHz: 2400.0000
CPU min MHz: 1000.0000
BogoMIPS: 4000.00
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 1024K
L3 cache: 36608K
NUMA node0 CPU(s): 0-51
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 pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb cat_l3 cdp_l3 invpcid_single intel_ppin intel_pt ssbd mba ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts hwp hwp_act_window hwp_epp hwp_pkg_req pku ospke md_clear spec_ctrl intel_stibp flush_l1d
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Old 2021-02-12, 14:09   #3
kruoli
 
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"Oliver"
Sep 2017
Porta Westfalica, DE

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Quote:
Originally Posted by drkirkby View Post
It is hard to get much information on this CPU
Not really: [URL="http://ark.intel.com/content/www/us/en/ark/products/120505/intel-xeon-platinum-8176m-processor-38-5m-cache-2-10-ghz.html"]Intel ARK[/URL] has it as expected.

Scrap that. I mistyped the CPU name.

Last fiddled with by kruoli on 2021-02-12 at 14:11
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