Optimum values for DCACHE_SIZE and DMPI_BLOCK value
Posted: Tue Oct 12, 2010 12:20 pm
Dear vasp master,
I have some query regarding parallel compilation of VASP 5.2 on our Intell Xeon cluster
I am using the following compiler and library to compile.
OS : fc12.x86_64
Intel ifort 11.0.83
Openmpi 1.4.3
MKL Library 10.1.2.024 and FFTW library from Intel.
The system was Intel Xeon X5570 @ 2.93GHz with cache size : 8192 KB
Connectivity in between nodes through infiniband
My query is what will be the optimal DCACHE_SIZE and DMPI_BLOCK values for the compilation. And also for other system architecture how to decide the optimum values of the above two variables.
Thanks in advance .......
I have some query regarding parallel compilation of VASP 5.2 on our Intell Xeon cluster
I am using the following compiler and library to compile.
OS : fc12.x86_64
Intel ifort 11.0.83
Openmpi 1.4.3
MKL Library 10.1.2.024 and FFTW library from Intel.
The system was Intel Xeon X5570 @ 2.93GHz with cache size : 8192 KB
Connectivity in between nodes through infiniband
My query is what will be the optimal DCACHE_SIZE and DMPI_BLOCK values for the compilation. And also for other system architecture how to decide the optimum values of the above two variables.
Thanks in advance .......