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Benchmark - 64 bit much slower than 32 bit

  • To: mathgroup at smc.vnet.net
  • Subject: [mg111750] Benchmark - 64 bit much slower than 32 bit
  • From: "Scot T. Martin" <smartin at seas.harvard.edu>
  • Date: Thu, 12 Aug 2010 05:29:25 -0400 (EDT)

Folks, just installed Mathematica on new Windows 7 64-bit machine and 
Benchmark[] is much slower than on 32-bit Windows XP. MathematicaMark7 
Rating of new system is 1.13 compared to 4.12 of old system.

Any explanations for this? Details are below. Are many of Mathematica's 
routines still in 32-bit and thus slower on 64-bit machine? Is this an 
issue related to Windows XP compared to Windows 7 vis-a-vis Mathematica?

Needless to say, new system is much better in terms of CPU, memory, etc., 
so this result is very surprising to me. I'd like to know what I can 
adjust to get a blazing Benchmark!

*** FAST (old system) ***

Intel(R) Core(TM)2 Duo CPU E8500 at 3.16 Ghz, 2.75 GB RAM


=== System Information ===

Machine Name:          martin2
System:                Microsoft Windows (32-bit)
Date:                  August 11, 2010
Mathematica Version:   7.0.0
Benchmark Result:      4.12


=== MathematicaMark7 System Comparison ===

martin2                         4.12
Microsoft Windows (32-bit)

2.40 GHz Intel Core2 Q6660      3.91
Microsoft Windows (64-bit)

2.33 GHz Intel Xeon E5410       3.78
Microsoft Windows (64-bit)

2.50 GHz Intel Xeon E5420       3.75
Linux x86 (64-bit)

3.0 GHz Intel Xeon 5160         2.84
Microsoft Windows (32-bit)

2.66 GHz Intel Xeon             2.14
Apple Mac OS 10.4.8 (64-bit)

1.6 GHz Intel Xeon 5310         1.88
CentOS Linux 4.4 (32-bit)

1.4 GHz Itanium 2               1.78
Red Hat Linux AS 3.0 (64-bit)

2.4 GHz Opteron 250             1.24
Sun Solaris 10 (64-bit)

2.5 GHz G5                      1.22
Apple Mac OS 10.4.8 (32-bit)

2.4 GHz Pentium 4               1.00
Microsoft Windows XP (32-bit)

(Faster systems give larger numbers)


=== MathematicaMark7 Detailed Timings ===

                                Total  Test 1  Test 2  Test 3  Test 4  Test 
5  Test 6  Test 7  Test 8  Test 9  Test 10  Test 11  Test 12  Test 13 
Test 14  Test 15

martin2
Microsoft Windows (32-bit)     20.9   1.20    0.59    0.83    1.25    1.89 
0.44    0.77    2.61    1.83    1.42     2.05     1.45     1.25     1.42 
1.91

2.40 GHz Intel Core2 Q6660
Microsoft Windows (64-bit)     22.1   1.11    0.50    0.73    1.59    1.59 
0.31    0.70    2.82    1.30    1.68     2.81     2.23     1.77     1.33 
1.60

2.33 GHz Intel Xeon E5410
Microsoft Windows (64-bit)     22.8   1.09    0.52    0.76    1.65    3.01 
0.31    0.70    2.84    1.06    1.64     2.79     1.83     1.75     1.23 
1.59

2.50 GHz Intel Xeon E5420
Linux x86 (64-bit)             23.0   1.21    0.57    0.80    1.45    4.30 
0.43    0.84    2.27    0.66    1.91     2.34     1.73     1.52     1.41 
1.56

3.0 GHz Intel Xeon 5160
Microsoft Windows (32-bit)     30.4   2.08    0.67    1.09    2.70    4.03 
0.50    0.89    3.17    2.00    2.16     2.41     2.08     1.50     2.59 
2.52

2.66 GHz Intel Xeon
Apple Mac OS 10.4.8 (64-bit)   40.3   1.75    0.44    1.85    3.38 
11.70   0.30    0.52    3.62    2.07    2.39     2.41     1.56     1.71 
3.66     2.91

1.6 GHz Intel Xeon 5310
CentOS Linux 4.4 (32-bit)      45.8   2.01    1.20    0.93    4.42    8.32 
0.88    1.54    5.12    1.61    3.14     3.91     2.73     3.37     3.49 
3.12

1.4 GHz Itanium 2
Red Hat Linux AS 3.0 (64-bit)  48.6   3.82    0.83    1.39    1.92    2.80 
0.33    0.76    7.44    3.29    4.84     7.11     4.90     2.90     2.88 
3.34

2.4 GHz Opteron 250
Sun Solaris 10 (64-bit)        69.3   3.92    0.60    3.68    5.79 
15.30   0.41    0.90    7.62    4.32    3.31     4.27     3.52     5.68 
4.53     5.45

2.5 GHz G5
Apple Mac OS 10.4.8 (32-bit)   70.6   3.92    1.25    3.88    4.53 
18.10   0.81    1.43    6.39    2.29    4.96     5.83     4.64     2.72 
6.02     3.89

2.4 GHz Pentium 4
Microsoft Windows XP (32-bit)  86.2   5.05    1.23    3.00    8.84    7.50 
0.92    1.63    9.17    8.78    5.39     6.17     5.67     4.51     9.42 
8.90

(Timings are CPU time in seconds)



*** SLOW (new system) ***

Intel(R) Xeon(R) CPU, W3680 at 3.33 GHz, 8.00 GB install, Windows 7 
professional 64 bit


=== System Information ===

Machine Name:          profmartinoffic
System:                Microsoft Windows (64-bit)
Date:                  August 11, 2010
Mathematica Version:   7.0.0
Benchmark Result:      1.13


=== MathematicaMark7 System Comparison ===

2.40 GHz Intel Core2 Q6660      3.91
Microsoft Windows (64-bit)

2.33 GHz Intel Xeon E5410       3.78
Microsoft Windows (64-bit)

2.50 GHz Intel Xeon E5420       3.75
Linux x86 (64-bit)

3.0 GHz Intel Xeon 5160         2.84
Microsoft Windows (32-bit)

2.66 GHz Intel Xeon             2.14
Apple Mac OS 10.4.8 (64-bit)

1.6 GHz Intel Xeon 5310         1.88
CentOS Linux 4.4 (32-bit)

1.4 GHz Itanium 2               1.78
Red Hat Linux AS 3.0 (64-bit)

2.4 GHz Opteron 250             1.24
Sun Solaris 10 (64-bit)

2.5 GHz G5                      1.22
Apple Mac OS 10.4.8 (32-bit)

profmartinoffic                 1.13
Microsoft Windows (64-bit)

2.4 GHz Pentium 4               1.00
Microsoft Windows XP (32-bit)

(Faster systems give larger numbers)


=== MathematicaMark7 Detailed Timings ===

                                Total  Test 1  Test 2  Test 3  Test 4  Test 
5  Test 6  Test 7  Test 8  Test 9  Test 10  Test 11  Test 12  Test 13 
Test 14  Test 15

2.40 GHz Intel Core2 Q6660
Microsoft Windows (64-bit)     22.1   1.11    0.50    0.73    1.59    1.59 
0.31    0.70    2.82    1.30    1.68     2.81     2.23     1.77     1.33 
1.60

2.33 GHz Intel Xeon E5410
Microsoft Windows (64-bit)     22.8   1.09    0.52    0.76    1.65    3.01 
0.31    0.70    2.84    1.06    1.64     2.79     1.83     1.75     1.23 
1.59

2.50 GHz Intel Xeon E5420
Linux x86 (64-bit)             23.0   1.21    0.57    0.80    1.45    4.30 
0.43    0.84    2.27    0.66    1.91     2.34     1.73     1.52     1.41 
1.56

3.0 GHz Intel Xeon 5160
Microsoft Windows (32-bit)     30.4   2.08    0.67    1.09    2.70    4.03 
0.50    0.89    3.17    2.00    2.16     2.41     2.08     1.50     2.59 
2.52

2.66 GHz Intel Xeon
Apple Mac OS 10.4.8 (64-bit)   40.3   1.75    0.44    1.85    3.38 
11.70   0.30    0.52    3.62    2.07    2.39     2.41     1.56     1.71 
3.66     2.91

1.6 GHz Intel Xeon 5310
CentOS Linux 4.4 (32-bit)      45.8   2.01    1.20    0.93    4.42    8.32 
0.88    1.54    5.12    1.61    3.14     3.91     2.73     3.37     3.49 
3.12

1.4 GHz Itanium 2
Red Hat Linux AS 3.0 (64-bit)  48.6   3.82    0.83    1.39    1.92    2.80 
0.33    0.76    7.44    3.29    4.84     7.11     4.90     2.90     2.88 
3.34

2.4 GHz Opteron 250
Sun Solaris 10 (64-bit)        69.3   3.92    0.60    3.68    5.79 
15.30   0.41    0.90    7.62    4.32    3.31     4.27     3.52     5.68 
4.53     5.45

2.5 GHz G5
Apple Mac OS 10.4.8 (32-bit)   70.6   3.92    1.25    3.88    4.53 
18.10   0.81    1.43    6.39    2.29    4.96     5.83     4.64     2.72 
6.02     3.89

profmartinoffic
Microsoft Windows (64-bit)     76.2   1.87    0.33    0.39    26.10   1.83 
0.23    0.48    1.89    1.70    0.84     1.72     1.05     1.15     23.80 
12.80

2.4 GHz Pentium 4
Microsoft Windows XP (32-bit)  86.2   5.05    1.23    3.00    8.84    7.50 
0.92    1.63    9.17    8.78    5.39     6.17     5.67     4.51     9.42 
8.90

(Timings are CPU time in seconds)



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