Re: darcs switchover

2006-01-18 Thread Malcolm Wallace
John Goerzen [EMAIL PROTECTED] writes: Meanwhile, I noted that the HaXml repo on darcs.haskell.org seems to be a verbatim copy of the darcs repo at York. Ahh. You are correct. Re-converting now, since you've presumably committed patches to the darcs side, is probably not going to be

GHC vs. GCC on raw vector addition

2006-01-18 Thread Sven Moritz Hallberg
Hi List, I'm running GHC and GCC head-to-head on the task of adding a bunch of long IOUArray-Vectors really fast. My machine is a Linux-ppc PowerBook and gets a runtime for the GHC-compiled binary that's about 10x as long as for GCC. Simon M. tells me this should be much better. Here are the

Re: GHC vs. GCC on raw vector addition

2006-01-18 Thread Malcolm Wallace
Sven Moritz Hallberg [EMAIL PROTECTED] writes: I'm running GHC and GCC head-to-head on the task of adding a bunch of long IOUArray-Vectors really fast. My machine is a Linux-ppc PowerBook and gets a runtime for the GHC-compiled binary that's about 10x as long as for GCC. Is it possible that

Re: GHC vs. GCC on raw vector addition

2006-01-18 Thread Bulat Ziganshin
Hello Sven, Wednesday, January 18, 2006, 3:33:40 PM, you wrote: SMH and gets a runtime for the GHC-compiled binary that's about 10x as long SMH as for GCC. Simon M. tells me this should be much better. Here are the attached version is only 5 times slower :) please note that 1)

Re: GHC vs. GCC on raw vector addition

2006-01-18 Thread Simon Marlow
Bulat Ziganshin wrote: Wednesday, January 18, 2006, 3:33:40 PM, you wrote: SMH and gets a runtime for the GHC-compiled binary that's about 10x as long SMH as for GCC. Simon M. tells me this should be much better. Here are the attached version is only 5 times slower :) please note that 1)

Re[2]: GHC vs. GCC on raw vector addition

2006-01-18 Thread Bulat Ziganshin
Hello Malcolm, Wednesday, January 18, 2006, 4:22:23 PM, you wrote: I'm running GHC and GCC head-to-head on the task of adding a bunch of long IOUArray-Vectors really fast. My machine is a Linux-ppc PowerBook and gets a runtime for the GHC-compiled binary that's about 10x as long as for GCC.

Re: Lexically scoped type variables

2006-01-18 Thread Christian Maeder
Simon Peyton-Jones wrote: I'm very interested to know whether you like it or hate it. In the latter case, I'd also like to know whether you also have programs that will be broken by the change. I don't use GADTs yet and I assume this change will not (seriously) break our code, but let me/us

Re[2]: GHC vs. GCC on raw vector addition

2006-01-18 Thread Bulat Ziganshin
Hello Simon, Wednesday, January 18, 2006, 5:31:25 PM, you wrote: 2) generating random values takes about 1.5-2 seconds by itself. Haskell's RNG is very different from C's one SM I squeezed a bit more out (see attached). x `seq` v `seq` return () it's new trick for me :) now the

Error in GHC

2006-01-18 Thread Tays Soares
I'm trying to run the following sequence on ghc 6.4: ghc -fglasgow-exts --make Main ghc -o exec Main.o Exemplo1.oBut I always get this error message after the second command:/usr/lib/ghc-6.4/libHSrts.a(Main.o)(.text+0xe): In function `main':: undefined reference to

Re[3]: GHC vs. GCC on raw vector addition

2006-01-18 Thread Bulat Ziganshin
Hello Bulat, Wednesday, January 18, 2006, 8:34:54 PM, you wrote: BZ the only cause that this code is only 3 times slower is that C version BZ is really limited by memory speed. when tested on 1000-element BZ arrays, it is 20 times slower. i'm not yet tried SSE optimization for BZ gcc ;) sorry,

Re: Error in GHC

2006-01-18 Thread Lemmih
On 1/18/06, Tays Soares [EMAIL PROTECTED] wrote: I'm trying to run the following sequence on ghc 6.4: ghc -fglasgow-exts --make Main ghc -o exec Main.o Exemplo1.o But I always get this error message after the second command: /usr/lib/ghc-6.4/libHSrts.a(Main.o)(.text+0xe): In function

Re: GHC vs. GCC on raw vector addition

2006-01-18 Thread John Meacham
On Wed, Jan 18, 2006 at 06:18:29PM +0300, Bulat Ziganshin wrote: :) even C version performs only 20 millions of additions in one second because this program is most limited by memory throughput - it access to 24 memory bytes per each addition. GHC just can't produce simple loops even for

Re: GHC vs. GCC on raw vector addition

2006-01-18 Thread John Meacham
On Wed, Jan 18, 2006 at 08:54:43PM +0300, Bulat Ziganshin wrote: sorry, with the gcc -O3 -ffast-math -fstrict-aliasing -funroll-loops the C version is 50 times faster than best Haskell one... it's the loop from C version: I believe something similar to what I noted here is the culprit: