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From: abe@mace.cc.purdue.edu (Vic Abell)
Newsgroups: comp.arch
Subject: Re: SPECmarks for RS/6000 systems - lies???
Summary: RS/6000-520 SPEC rating is not.
Message-ID: <5714@mace.cc.purdue.edu>
Date: 7 Oct 90 17:45:44 GMT
References: <4734@lure.latrobe.edu.au>
Organization: Purdue University
Lines: 69


In article <4733@lure.latrobe.edu.au>, CCHD@lure.latrobe.edu.au (Huw Davies - La Trobe University Computer Centre) writes:
> I have just got a copy of the September 1990 SPECwatch and I am
> a bit concerned about the following paragraph:
> 
> "There also seems to be a problem with replicating IBM's RS6000
> SPECmark results,

I have been able to reproduce the SPEC ratio for the RS/6000-520 with
only minor changes needed to enable gcc.  (See the Notes/Summary of
Changes section in the report for gcc details.)

Here is a complete SPEC report for the RISC System/6000, model 520
POWERserver.  Its SPEC ratio is 0.1 larger than what IBM reported to me.


                    SPEC Throughput Method A# Results
                        for Release 1.0 Benchmarks

Results:       SPEC    IBM RS/6000                             IBM Corporation
               Ref.        520    
Benchmark      Time    Time    SPEC                       IBM RISC System/6000
No. & Name    (sec.)  (sec.)  Ratio                            POWERserver 520

001.gcc        1482     102    14.5*              Hardware
008.espresso   2266     139    16.3   Model Number:      POWERserver 520
013.spice2g6  23951    1189    20.1   CPU:               IBM POWER 20MHz
015.doduc      1863      88    21.2   FPU:               Integrated
020.nasa7     20093     771    26.1   Number of CPU's:   1
022.li         6206     398    15.6   Cache Size/CPU:    32 KB data, 8 KB ins.
023.eqntott    1101      60    18.4   Memory:            32 MB
030.matrix300  4525     263    17.2   Disk Subsystem:    2-857 MB SCSI
042.fpppp      3038      71    42.8   Network Interface: 1 Ethernet Controller
047.tomcatv    2649      47    56.4

Geometric Mean 3867.7   173.0  22.4* 

            Software                                System
O/S Type and Rev:  AIX 3.1, GA        Tuning Parameters: None in use
Compiler Rev:      XL Fortran 1.1     Background Load:   Normal Unix daemons
Other Software:    XL C 1.1           System State:      Multi-user, lightly
File System Type:  IBM Journaled                         loaded
                   File System
Firmware Level:    N/A

Tested in:      October 1990
By:             Victor A. Abell <abe@mace.cc.purdue.edu>
                Purdue University Computing Center
                Mathematical Sciences Building
                West Lafayette, IN 47907
                (317) 494-1787
SPEC License #  310

Notes/Summary of Changes:

  # Method A: Homogeneous Load

  * Portability changes were required:

    gcc:
        o  Modified alloca.o rule in Makefile to use XL C compiler.
        o  Activated #include of <time.h> in cccp.c.
        o  Disabled redefinition of ptrdiff_t and size_t in stddef.h.
        o  Modified erroneous assignment of enumerated variables to bit
           fields in rtl.h, tree.h, and varasm.c.
        o  Enabled vfork to fork redefinition in gcc.c.

Copyright 1990 Purdue Research Foundation, West Lafayette, Indiana 47907.
All rights reserved.