- #LINPACK BENCHMARK SOFTWARE HOW TO#
- #LINPACK BENCHMARK SOFTWARE PORTABLE#
- #LINPACK BENCHMARK SOFTWARE SOFTWARE#
You should also have a look at the original High Performance LINPACK. With larger pages it might make sense to set this value to a large number, e.g. Once again to use the cache efficiently it is advised to have all arrays start at the boundary of memory pages. Often n is selected to be the smallest integer divisible by 8 that is greater than N. Do avoid this it is advised to set n>N inserting some padding between the column data. The reason is that when n=N the algorithm running in several parallel threads may run into a phenomenon known as cache thrashing. Note that we use a different symbol n instead of N. This is equivalent to solving a vector equation Ax=b where x and b are N-dimensional vectors and A is an N*N matrix.Īn N*N matrix is represented in the memory as an N*N array where individual columns are stored at offsets 0, n, 2*n etc. Linpack benchmark solves a system of N simultaneous linear equations. The parameters that you seem to be confused are all related to the way matrices are represented and accessed. This is the setup for Intel optimized Linpack benchmark. The best performance is likely to be obtained when arrays are aligned to the page size boundary.
#LINPACK BENCHMARK SOFTWARE HOW TO#
It is asking for several inputsĬould you please explain to me how to calculate these values and what they mean? I have downloaded and installed the Linpack benchmark suite and executed it. In my case its a 64bit dual xeon platform with 8GB of main memory. If i understood correctly the Linpack App uses the Intel optimized librarys for the architecture to be tested. and got moved to my new department, so please excuse my beginner questions and my english since this is not my native language. About a week ago i received my first WS system and have to use the Linpack Suite to test it. It has become a part of my responsibility at work to certify Workstation system for the Energy Star. The program was originally written in Fortran 77 but has now been translated for use in several other programming languages.My name is Florian and i have some basic questions for you about the Linpack Benchmark App.
#LINPACK BENCHMARK SOFTWARE SOFTWARE#
It restructures the original software for greater efficiency. The rst ‘LINPACK Benchmark’ report appeared as an appendix in the LINPACK Users’ Guide in 1979 2. It was originally designed to assist users of the LINPACK package 2 by providinginformation on the execution times required to solve a system of linear equations. LAPACK stands for linear algebra package. The original LINPACK Benchmark 1 is, in some sense, an accident. In some applications, LINPACK has been replaced by LAPACK. The performance of any single computer may vary from the published benchmark results for that model, because every computer is different. There is also a website called TOP500 that lists the systems that scored in the top 500 on the benchmarks. The algorithm used by HPL can be summarized by the following keywords.
#LINPACK BENCHMARK SOFTWARE PORTABLE#
It can thus be regarded as a portable as well as freely available implementation of the High Performance Computing Linpack Benchmark. It lists the performance of many industry computer systems and can be found online. HPL is a software package that solves a (random) dense linear system in double precision (64 bits) arithmetic on distributed-memory computers. They are published in the LINPACK benchmark report, which is subtitled Performance of Various Computers Using Standard Linear Equations Software. Results of the LINPACK benchmark tests are reported in several ways. This measures the best possible performance of the computer given ideal conditions. Users can specify the problem size and software to be used. The Highly Parallel Computing Benchmark is different from the other two benchmarks.