HiPERiSM Services: Performance Analysis for Linux Clusters

HiPERiSM - High Performance Algorism Consulting

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Services for performance analysis of Linux clusters:

  • Linux platform compiler evaluation: Absoft, GNU, Intel, Lahey, Omni, PGI, etc.
  • Linux cluster IA-32 & IA-64 hardware benchmarking.
  • Applications benchmarking on Linux clusters.

Some sample performance analyses from the technical reports pages:

  1. MPI bandwidth comparison of the SGI Altix versus new Quad-core nodes
  2. MPI Parallel efficiency for CMAQ 4.6.1 on a quad-core cluster
  3. The Stommel Ocean Model (in a Fortran 77 MPI version) with the Pentium III SSE instruction set using the Portland Group Compiler ( for problem sizes 1000 x 1000 to 10,000 x 10,000.

 

Table 4.6.  Parallel efficiency for the MPI results with CMAQ 4.6.1 using the EBI ROS3 solvers.

Col x Row = NP

MPI parallel efficiency

 EBI

ROS3

1 x 1 = 1

1.00

1.00

1 x 2 = 2

0.90

0.96

2 x 2 = 4

0.76

0.88

2 x 4 = 8

0.64

0.71

2 x 8 = 16

0.47

0.54

4 x 4 = 16

0.42

0.52

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