High-Performance Linpack

-

 HPL Benchmark on my laptop

It's the Top500 season time. I therefore tested HPL on my laptop using Intel's latest OneAPI version 2021.1.10.2261.

The laptop specifications are obtained from lscpu:

$ lscpu
Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   39 bits physical, 48 bits virtual
CPU(s):                          8
On-line CPU(s) list:             0-7
Thread(s) per core:              2
Core(s) per socket:              4
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       GenuineIntel
CPU family:                      6
Model:                           158
Model name:                      Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
Stepping:                        9
CPU MHz:                         874.469
CPU max MHz:                     3800.0000
CPU min MHz:                     800.0000
BogoMIPS:                        5599.85
Virtualization:                  VT-x
L1d cache:                       128 KiB
L1i cache:                       128 KiB
L2 cache:                        1 MiB
L3 cache:                        6 MiB

I am using Linux Mint20 on Asus ROG.

Here are the benchmark results:

$ ./runme_xeon64
This is a SAMPLE run script for running a shared-memory version of
Intel(R) Distribution for LINPACK* Benchmark. Change it to reflect
the correct number of CPUs/threads, problem input files, etc..
*Other names and brands may be claimed as the property of others.
Fri 13 Nov 2020 08:29:57 IST
Sample data file lininput_xeon64.

Current date/time: Fri Nov 13 08:29:57 2020

CPU frequency:    3.391 GHz
Number of CPUs: 1
Number of cores: 4
Number of threads: 4

Parameters are set to:

Number of tests: 12
Number of equations to solve (problem size) : 1000  2000  5000  10000 15000 18000 20000 22000 25000 26000 27000 30000
Leading dimension of array                  : 1000  2000  5008  10000 15000 18008 20016 22008 25000 26000 27000 30000
Number of trials to run                     : 4     2     2     2     2     2     2     2     2     2     1     1    
Data alignment value (in Kbytes)            : 4     4     4     4     4     4     4     4     4     4     4     1    

Maximum memory requested that can be used=7200601024, at the size=30000

=================== Timing linear equation system solver ===================

Size   LDA    Align. Time(s)    GFlops   Residual     Residual(norm) Check
1000   1000   4      0.007      96.3645  1.022959e-12 3.033181e-02   pass
1000   1000   4      0.006      103.2200 1.022959e-12 3.033181e-02   pass
1000   1000   4      0.006      104.5280 1.022959e-12 3.033181e-02   pass
1000   1000   4      0.007      96.2256  1.022959e-12 3.033181e-02   pass
2000   2000   4      0.054      99.1910  5.619838e-12 4.375464e-02   pass
2000   2000   4      0.053      99.9669  5.619838e-12 4.375464e-02   pass
5000   5008   4      0.634      131.5344 2.548040e-11 3.392018e-02   pass
5000   5008   4      0.636      131.2024 2.548040e-11 3.392018e-02   pass
10000  10000  4      4.641      143.6870 1.054555e-10 3.553909e-02   pass
10000  10000  4      4.506      147.9811 1.054555e-10 3.553909e-02   pass
15000  15000  4      14.650     153.6162 2.368669e-10 3.581348e-02   pass
15000  15000  4      15.110     148.9348 2.368669e-10 3.581348e-02   pass
18000  18008  4      26.769     145.2679 3.162348e-10 3.349350e-02   pass
18000  18008  4      27.580     140.9929 3.162348e-10 3.349350e-02   pass
20000  20016  4      38.582     138.2543 3.807211e-10 3.257923e-02   pass
20000  20016  4      40.702     131.0518 3.807211e-10 3.257923e-02   pass
22000  22008  4      52.958     134.0617 4.590843e-10 3.258820e-02   pass
22000  22008  4      53.794     131.9777 4.590843e-10 3.258820e-02   pass
25000  25000  4      79.499     131.0447 5.770316e-10 3.184866e-02   pass
25000  25000  4      80.791     128.9492 5.770316e-10 3.184866e-02   pass
26000  26000  4      91.586     127.9534 6.257559e-10 3.196386e-02   pass
26000  26000  4      92.436     126.7756 6.257559e-10 3.196386e-02   pass
27000  27000  4      104.169    125.9827 5.721172e-10 2.712944e-02   pass
30000  30000  1      143.041    125.8508 7.350489e-10 2.829664e-02   pass

Performance Summary (GFlops)

Size   LDA    Align.  Average  Maximal
1000   1000   4       100.0845 104.5280
2000   2000   4       99.5789  99.9669
5000   5008   4       131.3684 131.5344
10000  10000  4       145.8340 147.9811
15000  15000  4       151.2755 153.6162
18000  18008  4       143.1304 145.2679
20000  20016  4       134.6530 138.2543
22000  22008  4       133.0197 134.0617
25000  25000  4       129.9969 131.0447
26000  26000  4       127.3645 127.9534
27000  27000  4       125.9827 125.9827
30000  30000  1       125.8508 125.8508

Residual checks PASSED

End of tests

Below are 3 screen captures showing the load on the computer during the test (these pictures were taken during a previous test): top (top), netdata (middle) and gkrellm (bottom).




 

Comments

Post a Comment

Popular posts from this blog

The End of Grid Computing?

-
Image
In the year 2003 the MIT Technology review ranked "Grid Computing" among the 10 Emerging Technologies That Will Change the World [1]. We are now four years later and something is not going well with "Grid Computing". An indication that there is a problem can easily be seen by looking at the "Google Trends" plot for the term "Grid Computing": (click on the image to get the current trend). This finding can be compared with another buzz word, "Virtualization", which is older than "Grid Computing" and yet is gaining more and more momentum: There is however one exception. The Academic Grid is still having lot's of glory thanks to the huge heavily funded European (EGEE) and other US projects. When LHC data will start to be taken at CERN it will reach it's top importance. But, it seems that for other scientific projects Grid Computing is not going to be such a success. It will remain as "Nice to have" but will never...
Read more

Parallel Debugging with a Serial Debugger

-
Image
Parallel Debuggers are important tools when trying to eliminate bugs in parallel programs. Commercial parallel debuggers are expensive. In this blog post I will show you a free and open source alternative which is good enough for education purposes and for small codes. Suppose you want to debug the famous cpi.c code which computes an approximation to pi by a parallel numerical integration. This demo uses the free Data Display Debugger (ddd) which is based on gdb but has a nice GUI. Step 1, compile: mpicc -g -o cpi ./cpi.c Step 2, run (without a debugger): mpirun -np 2 ./cpi Step 3, run with the free Data Display Debugger (ddd) : mpirun -np 2 ddd ./cpi The last command will open two MPI processes (instances) of ddd each running cpi, see screen capture: Finally, I enclose here a short video which I hope is convincing: hi-res version:  https://youtu.be/N_J4NKJkuMs Happy (Free) MPI debugging!
Read more

[mpich-discuss] Errors while testing MPICH2 on Vista

-
[mpich-discuss] Errors while testing MPICH2 on Vista Guy Tel-Zur gtelzur at gmail.com Sat Oct 24 14:39:26 CDT 2009 Previous message: [mpich-discuss] MPI-3 Fortran feedback Next message: [mpich-discuss] MPI function to test a machine alive or not. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] I am trying to test a fresh installation of MPICH2 (version 1.2) on Vista32 and get the following errors: c:\temp>"c:\Program Files\MPICH2\bin\mpiexec.exe" -n 4 cpi.exe Please specify an authentication passphrase for smpd: passphrase, e.g. behappy*> Error while connecting to host, No connection could be made because the target machine actively refused it. (10061) Connect on sock (host=user-PC, port=8676) failed, exhaused all end points Unable to connect to 'user-PC:8676', sock error: Error = -1 I will appreciate any comment. --Guy -------------- next...
Read more