Newsgroups: comp.parallel.pvm
From: rcarter@best.com (Russell Carter)
Subject: Re: SUNMP performance
Organization: Best Internet Communications, Inc. (info@best.com)
Date: 22 Aug 1995 21:28:50 -0700
Message-ID: <41eaq2$cvs@shell2.best.com>

In article <41d4trINNpn4@CS.UTK.EDU>,
weicheng jiang    <wjiang@thud.cs.utk.edu> wrote:

What test did you use?

In http://www.geli.com/data/net.perf.html is the results from the
standard "timing" routine; here's the results using 100BASE-TX
networking:

                     Round Trip test         Avg. Bandwidth
                   minimal message size   10^6 byte message
                          (us)                 (MB/s)
 10BASE-T                 1282                  1.00
100BASE-TX                1083                  3.63

RTT Latency is about 1100 us.  (according to the test)

See http://www.geli.com for more details.

Regards,
Russell Carter
Geli Engineering
rcarter@geli.com


>In article <Pine.SOL.3.91.950822122616.20401A-100000@suma3.reading.ac.uk>, Graham Edward Fagg <sssfagg@reading.ac.uk> writes:
>|> Dear All,
>|>  I've been trying to comparing a CS2 and a SunMP Sparc2000. The figures 
>|> for message transfer rates between nodes in the Sun is around 
>|> 3Mbytes/sec. This seems a quite small and makes me think that the SUN is 
>|> not using a shared memory interface. Is there one, and how do I enable it?
>|> 
>
>I have gotten much better results with PVM on a 4-way Sparc10:
>
>send/recv (Raw)
>---------------
>
>Node-to-node Send/Ack
>
>Roundtrip T = 739 (us)  (0.0000 MB/s)      Data size: 0
>Roundtrip T = 618 (us)  (0.2589 MB/s)      Data size: 80
>Roundtrip T = 769 (us)  (2.0806 MB/s)      Data size: 800
>Roundtrip T = 2451 (us)  (6.5279 MB/s)      Data size: 8000
>Roundtrip T = 23026 (us)  (6.9487 MB/s)      Data size: 80000
>Roundtrip T = 322957 (us)  (4.9542 MB/s)      Data size: 800000
>
>
>send/recv (InPlace)
>-------------------
>
>Node-to-node Send/Ack
>
>Roundtrip T = 718 (us)  (0.0000 MB/s)      Data size: 0
>Roundtrip T = 653 (us)  (0.2450 MB/s)      Data size: 80
>Roundtrip T = 840 (us)  (1.9048 MB/s)      Data size: 800
>Roundtrip T = 1864 (us)  (8.5837 MB/s)      Data size: 8000
>Roundtrip T = 13551 (us)  (11.8072 MB/s)      Data size: 80000
>Roundtrip T = 198882 (us)  (8.0450 MB/s)      Data size: 800000
>
>
>psend/precv
>-----------
>
>Node-to-node Send/Ack
>
>Roundtrip T = 46 (us)  (0.0000 MB/s)      Data size: 0
>Roundtrip T = 64 (us)  (2.5000 MB/s)      Data size: 80
>Roundtrip T = 155 (us)  (10.3226 MB/s)      Data size: 800
>Roundtrip T = 991 (us)  (16.1453 MB/s)      Data size: 8000
>Roundtrip T = 8425 (us)  (18.9911 MB/s)      Data size: 80000
>
>
>-Weicheng Jiang
>PVM Group, University of Tennessee



