Martin Maechler wrote:
> do you have evidence for your belief?
> i.e. a set of system.time(.) calls where you see the
> difference?
system.time(dsignrank(17511, 400))
user system elapsed
1.010 0.120 1.145
system.time(dsignrank((0:17511), 400))
user system elapsed
1.25 0.13 1.40
system.time(dsignrank((0:17511), 500))
user system elapsed
2.040 0.220 2.296
system.time(psignrank((0:17511), 600))
user system elapsed
20.670 0.580 21.403
system.time(qsignrank(0.56, 300))
user system elapsed
0.700 0.050 0.753
======================================
system.time(dsignrank(17511, 400))
user system elapsed
0.070 0.000 0.078
system.time(dsignrank((0:17511), 400))
user system elapsed
0.100 0.000 0.104
system.time(dsignrank((0:17511), 500))
user system elapsed
0.160 0.000 0.164
system.time(psignrank((0:17511), 600))
user system elapsed
16.330 0.370 16.729
system.time(qsignrank(0.56, 300))
user system elapsed
0.020 0.010 0.029
system.time(dsignrank((0:20000), 600))
user system elapsed
3.470 0.280 3.745
RAM: ~130MB
======================================
system.time(dsignrank((0:20000), 600))
user system elapsed
0.250 0.010 0.26
RAM: ~1MB
> BTW: If you had a smart idea to *not* use a static 'w' and still
> be memory efficient,
> that could lead to make that code "thread-safe", but I am
> not at all sure this is possible without using
> "thread-library C code".
I'll look into it.
With respect,
--
Ivo Ugrina
ICQ: 47508335 | www.iugrina.com
-------------------------------
baza matematickih pojmova
http://baza.iugrina.com
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http://yoshi.iugrina.com
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