Cluster MOBO suggestions
Mike Mettke
mettke at lucent.com
Mon Jan 8 08:30:33 PST 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
>
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