Hi Andy,
On Tue, Aug 11, 2009 at 8:15 AM, Andy Fingerhut <
andy_finger...@alum.wustl.edu> wrote:
> I've tried an approach like you suggest, using mutable Java arrays of
> doubles, macros using aget / aset-double for reading and writing these
> arrays, and loop/recur everywhere iteration is needed
On Aug 10, 11:33 pm, Mark Engelberg wrote:
> On Mon, Aug 10, 2009 at 11:15 PM, Andy
>
> Fingerhut wrote:
> > I suspect I'm doing something wrong in my mutable Java array
> > implementation, but I don't see what it could be.
>
> There still seems to be a lot of boxing and unboxing going on. For e
On Aug 10, 11:08 pm, fft1976 wrote:
> On Aug 10, 2:19 pm, Jonathan Smith wrote:
>
> > 1.) use something mutable
> > 2.) unroll all the loops (mapping is a loop)
> > 3.) try not to coerce between seq/vec/hash-map too much.
>
> Are you saying this w.r.t. my code or in general? If the former, be
On Mon, Aug 10, 2009 at 11:15 PM, Andy
Fingerhut wrote:
> I suspect I'm doing something wrong in my mutable Java array
> implementation, but I don't see what it could be.
There still seems to be a lot of boxing and unboxing going on. For example, in:
(let [[momx momy momz] (offset-momentum bodie
On Aug 10, 5:57 pm, Mark Engelberg wrote:
> Andy,
>
> My understanding is that any double that gets stored in a vector or
> map is boxed, and therefore, the vast majority of your double
> conversions aren't really doing anything, because when you pull them
> out of the vector or map, they'll just
Hi,
On Aug 10, 9:10 pm, jvt wrote:
> Be this as it may, you can still get weird run-time behavior from this
> kind of macro in the following situation:
>
> (def *v1* 10)
> (def var-map {:*v1* 100})
> (def wrong-map {:*v2* 10})
>
> (with-bindings-from-map var-map (+ v1 100)) ; -> 200, does what
On Aug 10, 3:20 pm, Dragan Djuric wrote:
> For example:
>
> (defmacro creator [param]
> `(defmacro created [p] `(the code...)) ;; note the nested quote...
> how to resolve that? any examples?
Although I wouldn't cite my own code as a necessarily *good* or easy
to understand example, I'll pimp i
On Aug 10, 8:19 pm, "Kyle R. Burton" wrote:
> > Does all this work with cycles, Java arrays, etc.?
>
> It will work with anything that implements the Serializable interface
> in Java. Arrays do implement that interface, as do all the
> primitives. With respect to cycles, I'd suspect it does, bu
For example:
(defmacro creator [param]
`(defmacro created [p] `(the code...)) ;; note the nested quote...
how to resolve that? any examples?
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post t
Thanks.
(I discovered the solution shortly after posting here, but there is
that annoying delay until the message is approved by mods, so I
couldn't answer my question...)
On Aug 10, 2:55 am, David Nolen wrote:
> Sounds like you want apply:
> (apply fn args)
>
> On Sun, Aug 9, 2009 at 4:28 PM,
I'm also concerned about the implementation, which seems to rely on
what appears to me to be a little magical. An alternative that I was
considering was to just break backwards compatibility and combine all
of the variables into one variable containing a map in a new major
version of my library. B
> Does all this work with cycles, Java arrays, etc.?
It will work with anything that implements the Serializable interface
in Java. Arrays do implement that interface, as do all the
primitives. With respect to cycles, I'd suspect it does, but would
test it. If you have a repl handy it should
On Aug 10, 7:57 pm, "Kyle R. Burton" wrote:
> On Mon, Aug 10, 2009 at 10:42 PM, Kyle R. Burton wrote:
> >> Is there a way to do binary serialization of Clojure/Java values?
> >> ASCII (read) and (write) are nice, but they are wasting space,
> >> truncating floats and are probably slow compared to
Excellent, excellent. But I'm wondering, is it planned (or feasible)
for structmap transients to be supported too? I often use and "modify"
protean structmaps in loops, and I'd love to know if the concept of
transients can be applied to them.
On Aug 6, 4:53 am, Rich Hickey wrote:
> On Aug 5, 10:
On Aug 10, 2:19 pm, Jonathan Smith wrote:
> 1.) use something mutable
> 2.) unroll all the loops (mapping is a loop)
> 3.) try not to coerce between seq/vec/hash-map too much.
Are you saying this w.r.t. my code or in general? If the former, be
specific, better yet, show us your code. I avoided (
On Mon, Aug 10, 2009 at 10:42 PM, Kyle R. Burton wrote:
>> Is there a way to do binary serialization of Clojure/Java values?
>> ASCII (read) and (write) are nice, but they are wasting space,
>> truncating floats and are probably slow compared to binary
>> serialization.
>
> The following utility f
On Mon, Aug 10, 2009 at 10:31 PM, fft1976 wrote:
>
> Is there a way to create a Java class (not instance) in Clojure
> without writing actual Java? e.g.
>
> public class person {
> public string name;
> public int num_children;
> public double weight;
> }
Yes, tho perhaps not according to the
> Is there a way to do binary serialization of Clojure/Java values?
> ASCII (read) and (write) are nice, but they are wasting space,
> truncating floats and are probably slow compared to binary
> serialization.
The following utility functions have worked in many cases for me:
(defn object->file
Is there a way to create a Java class (not instance) in Clojure
without writing actual Java? e.g.
public class person {
public string name;
public int num_children;
public double weight;
}
--~--~-~--~~~---~--~~
You received this message because you are subscr
Is there a way to do binary serialization of Clojure/Java values?
ASCII (read) and (write) are nice, but they are wasting space,
truncating floats and are probably slow compared to binary
serialization.
--~--~-~--~~~---~--~~
You received this message because you are
On Aug 10, 5:15 pm, Andy Fingerhut
wrote:
> OK, I've got a new Clojure program for the n-body benchmark, and it is
> significantly faster than my previous one -- down from 138 x Java run
> time, to 37 x Java run time. Still room for improvement somewhere
> there, I'm sure, including perhaps us
First thing to check is always
(set! *warn-on-reflection* true)
Then add type hints until the reflection warnings go away. This can
make 10-20 times difference in code that calls a lot of Java methods.
-SS
On Aug 10, 6:06 pm, Raoul Duke wrote:
> hi,
>
> while i realize the real answer is "it
Andy,
My understanding is that any double that gets stored in a vector or
map is boxed, and therefore, the vast majority of your double
conversions aren't really doing anything, because when you pull them
out of the vector or map, they'll just be Double objects again.
I believe that the biggest
On Aug 10, 3:00 pm, Andy Fingerhut
wrote:
> On Aug 10, 2:19 pm, Jonathan Smith wrote:
>
> > 1.) use something mutable
> > 2.) unroll all the loops (mapping is a loop)
> > 3.) try not to coerce between seq/vec/hash-map too much.
>
> > in real world, stuff like theshootoutis pretty useless, as g
OK, I've got a new Clojure program for the n-body benchmark, and it is
significantly faster than my previous one -- down from 138 x Java run
time, to 37 x Java run time. Still room for improvement somewhere
there, I'm sure, including perhaps using Java arrays instead of
Clojure vectors.
http://g
The only thing I've ever seen in Clojure that is "slow" is tight loops on
primitives. Most of the time that people bring up Clojure performance, it's
usually about tight loops on primitives. For starters, this isn't even
something you could really optimize in popular dynamic languages like Python
o
On Aug 10, 12:18 pm, Tom Emerson wrote:
> Hello Clojurians,
>
> file-seq gives me a convenient way to get a seq of all these files.
> What I would like to do is process elements in this sequence in
> parallel. My first thought was to process the seq with pmap, but this
> is suboptimal because I'm
Hi,
2009/8/10 Tom Emerson
>
> Hello Clojurians,
>
> I want to process approximately 74K XML files that are stored on disk
> in a series of nested directories, each of which contains upto 1000
> files. For example,
>
> rootdir
>0
>file1.xml
>file2.xml
>1
>file3.xml
hi,
while i realize the real answer is "it depends!", are there any
current rules of thumb based on experience about how to tackle
performance tweaking in Clojure? (e.g. as a small random example, i
think i've heard at times that type notes should speed things up, but
then other times have heard
On Aug 10, 2:19 pm, Jonathan Smith wrote:
> 1.) use something mutable
> 2.) unroll all the loops (mapping is a loop)
> 3.) try not to coerce between seq/vec/hash-map too much.
>
> in real world, stuff like the shootout is pretty useless, as generally
> you'd reach for a better algorithm rather th
You can use agents in combination with the send function which will
operate on a fixed size thread pool. I'm sure there are other ways as
well, but I've found agents very easy to work with.
Travis
On Aug 10, 2:18 pm, Tom Emerson wrote:
> Hello Clojurians,
>
> I want to process approximately 74K
1.) use something mutable
2.) unroll all the loops (mapping is a loop)
3.) try not to coerce between seq/vec/hash-map too much.
in real world, stuff like the shootout is pretty useless, as generally
you'd reach for a better algorithm rather than implementing the
shackled, crippled, naive algorith
On Aug 10, 11:35 am, fft1976 wrote:
> On Aug 10, 4:46 am, Jarkko Oranen wrote:
>
> > I'm not going to start optimising,
>
> Somebody'd better!
>
> You always hear this dogma that one should write "elegant" code first
> and optimize later, and when you do that, a few little changes can
> make Clo
Really, this should be
(with-bindings-from-map var-map (+ *v1* 100)) ; -> 200, does what we
expect
(with-bindings-from-map wrong-map (+ *v1* 100)) ; -> 110, does the
wrong thing entirely, silently
Anyway, you may want to think about why common-lisp does not have a
with-all-slots macro for use
Meikel,
What concerns me is that this macro lets you write code which depends
on names which are not present at compile time (someplace). Coming
from scheme, not only would you _not_ do this, but you _can't_ do it
without using eval in your macro body, which is considered bad form.
That we can d
On Aug 10, 4:46 am, Jarkko Oranen wrote:
> I'm not going to start optimising,
Somebody'd better!
You always hear this dogma that one should write "elegant" code first
and optimize later, and when you do that, a few little changes can
make Clojure as fast as Java.
Here's your chance to show it
Hello Clojurians,
I want to process approximately 74K XML files that are stored on disk
in a series of nested directories, each of which contains upto 1000
files. For example,
rootdir
0
file1.xml
file2.xml
1
file3.xml
file4.xml
and so on.
file-seq gives
For built clojure with jdk7 need small change:
--- build.xml 2009-08-05 21:29:32 +0300
+++ build.xml 2009-08-10 21:11:25 +0300
@@ -79,7 +79,7 @@
+ debug="true" target="1.5" source="1.5"/>
http://groups.google.com/group/clojure?hl=en
-~--~~~~
Hi Andy,
On Thu, Aug 6, 2009 at 7:40 PM, Andy Fingerhut <
andy_finger...@alum.wustl.edu> wrote:
> Thank you, Christophe! I've been wanting to try those out.
>
> I made changes to 3 lines of my Clojure program for the k-nucleotide
> benchmark, which spends most of its time in a function tally-dna
I'll volunteer to run your code on an Azul box.
- Azul gear has a great profiling tool. I should be able to rapidly
tell hot-locks/lock-contention from other resource bottlenecks.
- Azul gear has far more bandwidth than X86 gear, so if your X86 is
bandwidth bound - this won't show up on us.
- Az
It's along the lines that we follow. Declaring the public functions
first however forces you to use
a declare statement for all the private functions used by your public
API.
We use section comments to split the module (constants, global defs,
private functions, public ones, ...)
and keep the publ
On Aug 10, 2009, at 11:45 AM, J. McConnell wrote:
> On Mon, Aug 10, 2009 at 9:07 AM, Chas Emerick
> wrote:
> Looks like a good start. I initially didn't grok what was going on,
> until I realized that you were aiming for an "actual" ant library.
>
> Yes, I wasn't very familiar with Ant Task
On Mon, Aug 10, 2009 at 9:07 AM, Chas Emerick wrote:
> Looks like a good start. I initially didn't grok what was going on, until
> I realized that you were aiming for an "actual" ant library.
>
Yes, I wasn't very familiar with Ant Tasks (as in org.apache.tools.ant.Task)
or macros until I looked
I hadn't looked at the patch before, but I was delighted to see the posting
about it a few days ago. I think it will benefit everyone. However, I was
well underway with these tasks at the time (I haven't had a lot of time to
work on them, so it took a couple of weeks). Regardless, I really wanted t
Looks like a good start. I initially didn't grok what was going on,
until I realized that you were aiming for an "actual" ant library.
We have a couple of ant macros that do all of our clojure building for
us (including auto-detecting namespaces within source directories,
compiling only tho
On Aug 10, 12:41 pm, fft1976 wrote:
> I just uploaded to the group an implementation of the n-body benchmark
> in Clojure (see nbody_init.clj)
>
> http://shootout.alioth.debian.org/u32/benchmark.php?test=nbody〈=j...
>
> My goal was to write a pure-functional version and to avoid any micro-
> opti
Hi,
have you seen the recent patch submitted by Mike Hinchey ?
http://www.assembla.com/spaces/clojure/tickets/168
Regards,
--
Laurent
2009/8/10 J. McConnell
> Most of the Ant setups I've seen for building and testing Clojure code,
> including some of my own, have suffered from the fact that
I just uploaded to the group an implementation of the n-body benchmark
in Clojure (see nbody_init.clj)
http://shootout.alioth.debian.org/u32/benchmark.php?test=nbody&lang=java&box=1
My goal was to write a pure-functional version and to avoid any micro-
optimizations. There are no type declaratio
Does anyone have an example of using Clojure as a SOAP server? There was one
tread that Google found, but a quick search of the wiki and this list didn¹t
turn up anything. A bit surprising really, as I thought that would be one of
the first things written.
If a SOAP library doesn¹t exist, how woul
I haven't had a chance to try it out yet, but this is very promising. Thanks
for doing it.
On Sun, Aug 9, 2009 at 11:58 PM, Richard Newman wrote:
> On 9 Aug 2009, at 8:14 PM, J. McConnell wrote:
>
> http://github.com/jmcconnell/clojure-ant-tasks/tree/master
>
> I hope someone finds some benefit
On Sun, Aug 9, 2009 at 12:47 PM, Lauri Pesonen wrote:
>
> 2009/8/8 Luc Prefontaine :
>
> > I totally agree no comments is not good at all but JavaDoc style comments
> in
> > Clojure ? I pray you all, please stay away of it :
>
> I was quite taken by this scheme style guide recently:
>
> http:
On Thu, Aug 6, 2009 at 10:12 PM, samppi wrote:
>
> I have about six variables that are often rebound together using
> binding; these variables are used to access and set data in a state
> object (whose type is of the user's choice). These variables' values
> (the accessors and setters) are often
On Sun, Aug 9, 2009 at 8:55 PM, David Nolen wrote:
> Sounds like you want apply:
> (apply fn args)
>
Indeed.
Since create-struct (not create-structure!) is a function, this should work.
It wouldn't work with a macro, though.
--~--~-~--~~~---~--~~
You received th
This is nothing to worry about, but it does seem to be something that can
be improved in clojure. I submitted a patch with a simple fix:
http://www.assembla.com/spaces/clojure/tickets/171-reflection-warning-from-ns
There is a more complex fix that could be made to the clojure compiler so it
woul
54 matches
Mail list logo
