HPL Performance Results

The performance achieved by this software package on a few machine configurations is shown below. These results are only provided for illustrative purposes. By the time you read this, those systems have changed, they may not even exist anymore and one can surely not exactly reproduce the state in which these machines were when those measurements have been obtained. To obtain accurate figures on your system, it is absolutely necessary to download the software and run it there.

4 AMD Athlon K7 500 Mhz (256 Mb) - (2x) 100 Mbs Switched - 2 NICs per node (channel bonding)

OS Linux 6.2 RedHat (Kernel 2.2.14)
C compiler gcc (egcs-2.91.66 egcs-1.1.2 release)
C flags -fomit-frame-pointer -O3 -funroll-loops
MPI MPIch 1.2.1
BLAS ATLAS (Version 3.0 beta)
Comments 09 / 00

Performance (Gflops) w.r.t Problem size on 4 nodes.
GRID 2000 5000 8000 10000
1 x 4 1.28 1.73 1.89 1.95
2 x 2 1.17 1.68 1.88 1.93
4 x 1 0.81 1.43 1.70 1.80

8 Duals Intel PIII 550 Mhz (512 Mb) - Myrinet

OS Linux 6.1 RedHat (Kernel 2.2.15)
C compiler gcc (egcs-2.91.66 egcs-1.1.2 release)
C flags -fomit-frame-pointer -O3 -funroll-loops
MPI MPI GM (Version 1.2.3)
BLAS ATLAS (Version 3.0 beta)
Comments UTK / ICL - Torc cluster - 09 / 00

Performance (Gflops) w.r.t Problem size on 8- and 16-processors grids.
GRID 2000 5000 8000 10000 15000 20000
2 x 4 1.76 2.32 2.51 2.58 2.72 2.73
4 x 4 2.27 3.94 4.46 4.68 5.00 5.16

Compaq 64 nodes (4 ev67 667 Mhz processors per node) AlphaServer SC

OS Tru64 Version 5
C compiler cc Version 6.1
C flags -arch host -tune host -std -O5
MPI -lmpi -lelan
BLAS CXML
Comments ORNL / CCS - falcon - 09 / 00

In the table below, each row corresponds to a given number of cpus (or processors) and nodes. The first row for example is denoted by 1 / 1, i.e., 1 cpu / 1 node. Rmax is given in Gflops, and the value of Nmax in fact corresponds to 351 Mb per cpu for all machine configurations.

CPUS / NODES GRID N 1/2 Nmax Rmax (Gflops) Parallel Efficiency
1 / 1 1 x 1 150 6625 1.136 1.000
4 / 1 2 x 2 800