Comentários sobre: Performance of IORef http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/ Thu, 27 Oct 2011 14:34:27 +0000 hourly 1 http://wordpress.com/ Por: Another interesting code using Template Haskell « Blog do Marcot http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-32 Sun, 14 Mar 2010 12:09:18 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-32 [...] interesting code using Template Haskell While writing the post about performance, I got interested in Template Haskell, specially in the $(lift) construction.  Investigating a [...]

]]> Por: marcotmarcot http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-31 Sun, 14 Mar 2010 11:58:05 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-31 Dale, you’re right, this can only be used with static data.

$ gcc –version
gcc (Debian 4.4.3-3) 4.4.3
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ ghc –version
The Glorious Glasgow Haskell Compilation System, version 6.12.1

$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU T5750 @ 2.00GHz
stepping : 13
cpu MHz : 1994.810
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm
bogomips : 3989.62
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU T5750 @ 2.00GHz
stepping : 13
cpu MHz : 1994.810
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm
bogomips : 3990.09
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

$ free -m
total used free shared buffers cached
Mem: 3014 1566 1447 0 102 786
-/+ buffers/cache: 677 2336
Swap: 2999 0 2999
$ uname -a
Linux zezinho 2.6.32-2-amd64 #1 SMP Fri Feb 12 00:01:47 UTC 2010 x86_64 GNU/Linux

I hope this answers the question.

]]> Por: Anonymous http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-29 Sun, 14 Mar 2010 07:40:33 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-29 Can you say what compiler versions and hardware you’re using?

]]> Por: Dale King http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-27 Sun, 14 Mar 2010 02:57:05 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-27 given the run time for template haskell it looks like the compiler unrolled the loops. I doubt you would get the same results with dynamic data instead of static.

]]> Por: marcotmarcot http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-26 Sun, 14 Mar 2010 02:00:44 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-26 Yes, they’re all messed up, sorry by that. A link to them:

http://people.debian.org/~marcot/blog/loop.c
http://people.debian.org/~marcot/blog/loop.hs
http://people.debian.org/~marcot/blog/functional.hs
http://people.debian.org/~marcot/blog/th.hs

The sizes of the binary are: 6.6K (C), 675K (IORef), 676K (Functional) and 689K
(TH).

]]> Por: Anonymous http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-25 Sun, 14 Mar 2010 01:51:26 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-25 Your first Haskell code sample seems a bit mangled.

]]> Por: Anônimo http://marcotmarcot.wordpress.com/2010/03/13/performance-of-ioref/#comment-24 Sat, 13 Mar 2010 23:58:08 +0000 http://marcotmarcot.wordpress.com/?p=80#comment-24 What’s the size of the template binary?

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