efficiency problem
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- nfs21cn
- Newbie
- Posts: 5
- Joined: Sun Nov 13, 2005 2:37 am
efficiency problem
vasp.4.6.26 has been successfully installed on two platforms
1. Intel xeon 5130 dual core double way/mpich2-1.0.3/mkl8.1/ifort9.1.036 /4 nodes
2. Dual Core AMD Opteron(tm) Processor 265 double ways/mpich2-1.0.3/pgi5.1/acml/ 4 nodes
On the second platform mpirun -np 16(4/8) ./vasp , all the cpus run nearly 100%
However on the first platform mpirun -np 4 ./vasp, all the cpus run nearly 100%, but mpirun -np 8(16) ./vasp, all the cpus run no more than 30%
I believe the gigabyte interconnnect network is successfully installed on both platforms. All the run lead to the correct results.
Any issues about intel hardware/software exists ?
How to solve the efficiency problem?
1. Intel xeon 5130 dual core double way/mpich2-1.0.3/mkl8.1/ifort9.1.036 /4 nodes
2. Dual Core AMD Opteron(tm) Processor 265 double ways/mpich2-1.0.3/pgi5.1/acml/ 4 nodes
On the second platform mpirun -np 16(4/8) ./vasp , all the cpus run nearly 100%
However on the first platform mpirun -np 4 ./vasp, all the cpus run nearly 100%, but mpirun -np 8(16) ./vasp, all the cpus run no more than 30%
I believe the gigabyte interconnnect network is successfully installed on both platforms. All the run lead to the correct results.
Any issues about intel hardware/software exists ?
How to solve the efficiency problem?
Last edited by nfs21cn on Tue Mar 11, 2008 8:22 am, edited 1 time in total.
-
- Global Moderator
- Posts: 1817
- Joined: Mon Nov 18, 2019 11:00 am
Re: efficiency problem
Hi,
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