Cluster MOBO suggestions

Mike Mettke mettke at lucent.com
Mon Jan 8 11:30:33 EST 2001


All,

did anybody run the same test on an Serverworks HE chipset ?
They claim 4.1GByte/s bandwidth which sounds, well, fantastic.
If that's anywhere near true we might get them.

regards,
Mike


Steven Castillo wrote:

> On Sat, 6 Jan 2001, Leo Magallon wrote:
>
> > Thanks,  I think i've almost decided on getting the Super 370DLE.   It  seems
> > like THE motherboard choice. By choosing this mobo I can save on buying the
> > NICs because it comes with it.
> >
> >
> > Leo.
> >
> > Joey Raheb wrote:
> >
>
> Hello Leo:
>
> You might want to consider the Super 370DER (built-in rage ati graphics)
> or 370DE6 instead.  These boards use the Serverworks HE-SL
> chipset rather than the Serverworks LE chipset.  The HE-SL chipset uses
> 2-way interleaved memory for improved memory bandwidth.  Please see the
> post from Steffan Persvold below listing stream benchmarks for these two
> different chipsets.  I happened to save the posting because we were
> considering different dual CPU mobo's.
>
>  --
> Steve Castillo
>
> Professor
> Klipsch School of Electrical and Computer Engineering
> New Mexico State University
> scastill at nmsu.edu
> (505)646-3117
>
> From sp at scali.no Mon Jan  8 08:08:42 2001
> Date: Mon, 11 Dec 2000 19:10:41 +0100
> From: Steffen Persvold <sp at scali.no>
> To: Ray Muno <muno at aem.umn.edu>
> Cc: beowulf at beowulf.org
> Subject: Re: Serverworks chip sets
>
> Here are a more meaningful comparision. The comparison is between a Tyan
> S2510 based on the LE chipset and a Supermicro 370DER based on the HE-SL
> chipset.
>
> Both machines are equipped with 2x PIII-800EB(133) CPUs and 512MByte
> PC-133 SDRAM
>
> Using one CPU:
>
> 370DER:
>    ----------------------------------------------
>     Double precision appears to have 16 digits of accuracy
>     Assuming 8 bytes per DOUBLE PRECISION word
>    ----------------------------------------------
>     Array size =    2000000
>     Offset     =          0
>     The total memory requirement is   45 MB
>     You are running each test  20 times
>     --
>     The *best* time for each test is used
>     *EXCLUDING* the first and last iterations
>     ----------------------------------------------------
>     Your clock granularity appears to be less than one microsecond
>     Your clock granularity/precision appears to be      1 microseconds
>     ----------------------------------------------------
>    Function     Rate (MB/s)  Avg time   Min time  Max time
>    Copy:        374.2689      0.0855      0.0855      0.0856
>    Scale:       401.9594      0.0796      0.0796      0.0797
>    Add:         475.5536      0.1010      0.1009      0.1010
>    Triad:       475.1911      0.1011      0.1010      0.1012
>     ----------------------------------------------------
>     Solution Validates!
>     ----------------------------------------------------
>
> S2510:
>    ----------------------------------------------
>     Double precision appears to have 16 digits of accuracy
>     Assuming 8 bytes per DOUBLE PRECISION word
>    ----------------------------------------------
>     Array size =    2000000
>     Offset     =          0
>     The total memory requirement is   45 MB
>     You are running each test  20 times
>     --
>     The *best* time for each test is used
>     *EXCLUDING* the first and last iterations
>     ----------------------------------------------------
>     Your clock granularity appears to be less than one microsecond
>     Your clock granularity/precision appears to be      1 microseconds
>     ----------------------------------------------------
>    Function     Rate (MB/s)  Avg time   Min time  Max time
>    Copy:        376.9848      0.0849      0.0849      0.0851
>    Scale:       375.0191      0.0854      0.0853      0.0854
>    Add:         483.7248      0.0993      0.0992      0.0994
>    Triad:       484.5352      0.0991      0.0991      0.0991
>     ----------------------------------------------------
>     Solution Validates!
>     ----------------------------------------------------
>
> Using both CPUs (OMP makes it a bit easier and adds the numbers for me):
> 370DER:
>    ----------------------------------------------
>     Double precision appears to have 16 digits of accuracy
>     Assuming 8 bytes per DOUBLE PRECISION word
>    ----------------------------------------------
>     Array size =    2000000
>     Offset     =          0
>     The total memory requirement is   45 MB
>     You are running each test  20 times
>     --
>     The *best* time for each test is used
>     *EXCLUDING* the first and last iterations
>     ----------------------------------------------------
>     Your clock granularity appears to be less than one microsecond
>     Your clock granularity/precision appears to be      1 microseconds
>     ----------------------------------------------------
>    Function     Rate (MB/s)  Avg time   Min time  Max time
>    Copy:        468.8234      0.0686      0.0683      0.0693
>    Scale:       479.3794      0.0669      0.0668      0.0671
>    Add:         541.0826      0.0888      0.0887      0.0888
>    Triad:       542.6429      0.0885      0.0885      0.0886
>     ----------------------------------------------------
>     Solution Validates!
>     ----------------------------------------------------
>
> S2510:
>    ----------------------------------------------
>     Double precision appears to have 16 digits of accuracy
>     Assuming 8 bytes per DOUBLE PRECISION word
>    ----------------------------------------------
>     Array size =    2000000
>     Offset     =          0
>     The total memory requirement is   45 MB
>     You are running each test  20 times
>     --
>     The *best* time for each test is used
>     *EXCLUDING* the first and last iterations
>     ----------------------------------------------------
>     Your clock granularity appears to be less than one microsecond
>     Your clock granularity/precision appears to be      1 microseconds
>     ----------------------------------------------------
>    Function     Rate (MB/s)  Avg time   Min time  Max time
>    Copy:        353.0918      0.0916      0.0906      0.0926
>    Scale:       355.3543      0.0918      0.0901      0.0931
>    Add:         397.2821      0.1213      0.1208      0.1222
>    Triad:       397.7756      0.1218      0.1207      0.1225
>     ----------------------------------------------------
>     Solution Validates!
>     ----------------------------------------------------
>
> As you can see the two-way interleaving helps a bit on a Dual-CPU run
> (~35% more bandwidth)
>
> Best regards,
> --
>   Steffen Persvold               Systems Engineer
>   Email : mailto:sp at scali.no     Scali AS (http://www.scali.com)
>   Tlf   : (+47) 22 62 89 50      Olaf Helsets vei 6
>   Fax   : (+47) 22 62 89 51      N-0621 Oslo, Norway
>
> _______________________________________________
> Beowulf mailing list
> Beowulf at beowulf.org
> http://www.beowulf.org/mailman/listinfo/beowulf
>
> _______________________________________________
> Beowulf mailing list
> Beowulf at beowulf.org
> http://www.beowulf.org/mailman/listinfo/beowulf


_______________________________________________
Beowulf mailing list
Beowulf at beowulf.org
http://www.beowulf.org/mailman/listinfo/beowulf



More information about the Beowulf mailing list