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Abaqus job running slower on expensive servers than on a basic PC

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Old   October 22, 2021, 06:06
Default Abaqus job running slower on expensive servers than on a basic PC
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hi everyone
Our laboratory has two server :
dual 7H12 16*32G 3200 (mem r/w 310GB/s 230GB/s)
dual 8180 12*16G 2666 (mem r/w 233GB/s 160GB/s)

I have a brick structure analysis job in abaqus2020 standard under win10 .The strange thing is that no matter how I change the option (such as bios set,core or mem used) they are all slower than my pc(9700 16g).
I think the server should be faster than my pc.did anyone know what should I do?
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Old   October 22, 2021, 11:45
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Tell us more: what kind of job is it? Element count, anything special about it like e.g. thousands of contacts...
How do you run it? Particularly how many cores are you trying to use on each machine?
And please quantify how much slower we are talking about.
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Old   October 23, 2021, 03:43
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Thanks for your reply!
it's a seismic wave time history analysis of reinforced concrete frame structure,the model units 450,000 .abaqus standard solver ,nothing special.
Usually it's two times slower (same core 6~8,100% mem,no gpgpu).i guess abaqus needs to set some special parameters in Win10,I tried to use centos7, they have the same speed as i7 in the case of 16 cores(7H12).
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Old   October 23, 2021, 11:32
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I tried to submit the job on the new servers.
dual 6348 16*32 3200
it's very fast even i don’t set any parameters.Maybe abaqus standard solver need CPU up to 4.0G frequency to be fast?is too ridiculous
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Old   October 25, 2021, 04:50
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Maybe MPI ? Have you installed MPI ? ? Have you tried run simulation on other windows than 10 ? or linux ?
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Old   October 25, 2021, 15:51
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If the problem is CPU limited, and not memory bandwidth limited. then your laptop likely has a higher CPU frequency and would be faster. It also has no intra-processor communication, though that shouldn't matter much.

What about the working directory? Are these local directories on the server, or are they having to use a much slower network drive? What drives are being used on each machine?

Is hyperthreading enabled on the servers? This can hurt performance.
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Old   October 26, 2021, 00:54
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Win10.I tried use intel MPI and link to abaqus, but it didn't work.
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Old   October 26, 2021, 01:10
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Quote:
Originally Posted by evcelica View Post
If the problem is CPU limited, and not memory bandwidth limited. then your laptop likely has a higher CPU frequency and would be faster. It also has no intra-processor communication, though that shouldn't matter much.

What about the working directory? Are these local directories on the server, or are they having to use a much slower network drive? What drives are being used on each machine?

Is hyperthreading enabled on the servers? This can hurt performance.
i closed hyperthreading and virtualization.But it didn’t make the speed increase significantly.our working directories on the local HDD.i'm not sure perform will better on SSDs.
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