Dear linuxers,
How do I run a linpack benchmark in my computer? I was able to compile this old code (parts from 1978!) http://www.netlib.org/benchmark/linpackc and run, but I'm afraid it may be innacurate or do not have the capacity to measure multiple cores. So I tried to find a more recent code, till I, for my surprise, find out the debian package: $ dpkg -s hpcc Package: hpcc Status: install ok installed Priority: extra Section: science Installed-Size: 1568 Maintainer: Debian Science Maintainers <debian-science-maintain...@lists.alioth.debian.org> Architecture: amd64 Version: 1.4.1-2 Depends: libatlas3gf-base, libc6 (>= 2.7), libopenmpi1.3, mpi-default-bin Description: HPC Challenge benchmark The High Performance Computing (HPC) Challenge benchmark runs a suite of 7 tests that measure the performance of CPU, memory and network for HPC clusters. Amongst others, it includes the High-Performance LINPACK (HPL) benchmark, used by the Top500 ranking (http://www.top500.org/). Homepage: http://icl.cs.utk.edu/hpcc/ But there is no manual page, nor I can find instructions to run. Simple running hpcc gives an error: $ hpcc HPL WARNING from process # 0, on line 313 of function HPL_pdinfo: >>> cannot open file hpccinf.txt <<< Is there a guideline? I just want to see the FLOPS, nothing to complex I presume. And, of course, to configure the test to use full capabilities of the machine (an intel i5). I suspect hpccinf.txt is for that, isn't it? BTW, from the compiled program, I got most of the times: $ ./linpakc Rolled Double Precision Linpack Rolled Double Precision Linpack norm. resid resid machep x[0]-1 x[n-1]-1 1.7 7.41628980e-14 2.22044605e-16 -1.49880108e-14 -1.89848137e-14 times are reported for matrices of order 100 dgefa dgesl total kflops unit ratio times for array with leading dimension of 201 0.00 0.00 0.00 inf 0.00 0.00 0.00 0.00 0.00 inf 0.00 0.00 0.00 0.00 0.00 inf 0.00 0.00 0.00 0.00 0.00 858333 0.00 0.01 times for array with leading dimension of 200 0.00 0.00 0.00 inf 0.00 0.00 0.00 0.00 0.00 inf 0.00 0.00 0.00 0.00 0.00 inf 0.00 0.00 0.00 0.00 0.00 1716667 0.00 0.01 Rolled Double Precision 858333 Kflops ; 10 Reps but sometimes the number is: Rolled Double Precision 1716667 Kflops ; 10 Reps and I even got a negative value once in a while, which raised suspicious about the code. $ ./linpakc norm. resid resid machep x[0]-1 x[n-1]-1 1.7 7.41628980e-14 2.22044605e-16 -1.49880108e-14 -1.89848137e-14 Rolled Double Precision -2147483648 Kflops ; 10 Reps compiled with: gcc linpakc.c -o linpakc -DDP -DROLL -O4 -lm Thanks, Beco. -- Dr Beco A.I. researcher --> . <-- "Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar", every "supreme leader", every saint and sinner in the history of our species lived there - on a mote of dust suspended in a sunbeam." (Carl Sagan, 1934-1996) -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/caluyw2x4xo75na3hebz+susa9saa24jh18_z9rgvazwl+ft...@mail.gmail.com
